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Posted to commits@geaflow.apache.org by cb...@apache.org on 2026/01/21 07:17:02 UTC
(geaflow) branch master updated: feat(ai): Adding Lucene & Embedding-Based Search Operators to Apache GeaFlow (incubating) for Lightweight Context Memory (#716)
This is an automated email from the ASF dual-hosted git repository.
cbqiao pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/geaflow.git
The following commit(s) were added to refs/heads/master by this push:
new ee4a0c52a feat(ai): Adding Lucene & Embedding-Based Search Operators to Apache GeaFlow (incubating) for Lightweight Context Memory (#716)
ee4a0c52a is described below
commit ee4a0c52a4f8725ba52af308a63763fc1ab94d07
Author: Leomrlin <12...@qq.com>
AuthorDate: Wed Jan 21 15:16:58 2026 +0800
feat(ai): Adding Lucene & Embedding-Based Search Operators to Apache GeaFlow (incubating) for Lightweight Context Memory (#716)
* init dcp code
* add lucene search
* add prompt formatter
* add test case
* handle ldbc id conflict
* support llm
* support embedding index store
* add embedding op
* refine test case
* delete test data
* add MockChatRobot
* fix checkstyle
* fix pom
* fix finishReason
* fix ci tests
* fix ci tests
* fix comments
* fix codestyle
* support mutable graph
* fix comments
---
geaflow-ai/pom.xml | 127 ++++++++
.../org/apache/geaflow/ai/GraphMemoryServer.java | 110 +++++++
.../org/apache/geaflow/ai/common/ErrorCode.java | 30 ++
.../apache/geaflow/ai/common/config/Constants.java | 46 +++
.../ai/common/config/GraphMemoryConfigKeys.java | 23 ++
.../ai/common/model/AbstractModelService.java | 37 +++
.../geaflow/ai/common/model/ChatService.java | 40 +++
.../geaflow/ai/common/model/EmbeddingResponse.java | 47 +++
.../geaflow/ai/common/model/EmbeddingService.java | 59 ++++
.../geaflow/ai/common/model/ModelConfig.java | 70 ++++
.../geaflow/ai/common/model/ModelContext.java | 73 +++++
.../geaflow/ai/common/model/ModelEmbedding.java | 58 ++++
.../geaflow/ai/common/model/ModelMessage.java | 31 ++
.../apache/geaflow/ai/common/model/ModelUtils.java | 51 +++
.../ai/common/model/OkHttpDirectConnector.java | 120 +++++++
.../geaflow/ai/common/model/RemoteModelClient.java | 78 +++++
.../apache/geaflow/ai/common/model/Response.java | 57 ++++
.../geaflow/ai/engine/GraphComputeEngine.java | 23 ++
.../geaflow/ai/graph/EmptyGraphAccessor.java | 69 ++++
.../java/org/apache/geaflow/ai/graph/Graph.java | 49 +++
.../org/apache/geaflow/ai/graph/GraphAccessor.java | 43 +++
.../org/apache/geaflow/ai/graph/GraphEdge.java | 63 ++++
.../org/apache/geaflow/ai/graph/GraphEntity.java | 25 ++
.../org/apache/geaflow/ai/graph/GraphVertex.java | 63 ++++
.../geaflow/ai/graph/LocalMemoryGraphAccessor.java | 158 +++++++++
.../geaflow/ai/graph/MemoryMutableGraph.java | 58 ++++
.../org/apache/geaflow/ai/graph/MutableGraph.java | 36 ++
.../apache/geaflow/ai/graph/io/CsvFileReader.java | 153 +++++++++
.../java/org/apache/geaflow/ai/graph/io/Edge.java | 76 +++++
.../org/apache/geaflow/ai/graph/io/EdgeGroup.java | 132 ++++++++
.../org/apache/geaflow/ai/graph/io/EdgeSchema.java | 60 ++++
.../apache/geaflow/ai/graph/io/EntityGroup.java | 23 ++
.../geaflow/ai/graph/io/GraphFileReader.java | 80 +++++
.../apache/geaflow/ai/graph/io/GraphSchema.java | 113 +++++++
.../apache/geaflow/ai/graph/io/MemoryGraph.java | 191 +++++++++++
.../geaflow/ai/graph/io/ResourceFileScanner.java | 65 ++++
.../org/apache/geaflow/ai/graph/io/Schema.java | 30 ++
.../org/apache/geaflow/ai/graph/io/Vertex.java | 70 ++++
.../apache/geaflow/ai/graph/io/VertexGroup.java | 104 ++++++
.../apache/geaflow/ai/graph/io/VertexSchema.java | 53 +++
.../geaflow/ai/index/EmbeddingIndexStore.java | 257 +++++++++++++++
.../ai/index/EntityAttributeIndexStore.java | 62 ++++
.../org/apache/geaflow/ai/index/IndexStore.java | 29 ++
.../apache/geaflow/ai/index/IndexStoreCache.java | 52 +++
.../geaflow/ai/index/vector/EmbeddingVector.java | 82 +++++
.../apache/geaflow/ai/index/vector/IVector.java | 29 ++
.../geaflow/ai/index/vector/KeywordVector.java | 70 ++++
.../geaflow/ai/index/vector/MagnitudeVector.java | 38 +++
.../geaflow/ai/index/vector/TraversalVector.java | 57 ++++
.../apache/geaflow/ai/index/vector/VectorType.java | 27 ++
.../geaflow/ai/operator/EmbeddingOperator.java | 194 +++++++++++
.../geaflow/ai/operator/GraphSearchStore.java | 151 +++++++++
.../geaflow/ai/operator/SearchConstants.java | 32 ++
.../apache/geaflow/ai/operator/SearchOperator.java | 29 ++
.../apache/geaflow/ai/operator/SearchStore.java | 118 +++++++
.../apache/geaflow/ai/operator/SearchUtils.java | 108 ++++++
.../geaflow/ai/operator/SessionOperator.java | 143 ++++++++
.../org/apache/geaflow/ai/search/VectorSearch.java | 75 +++++
.../geaflow/ai/session/SessionManagement.java | 62 ++++
.../org/apache/geaflow/ai/subgraph/SubGraph.java | 57 ++++
.../apache/geaflow/ai/verbalization/Context.java | 36 ++
.../geaflow/ai/verbalization/PromptFormatter.java | 33 ++
.../SubgraphSemanticPromptFunction.java | 90 +++++
.../ai/verbalization/VerbalizationFunction.java | 33 ++
geaflow-ai/src/main/resources/log4j.properties | 26 ++
.../org/apache/geaflow/ai/GraphMemoryTest.java | 196 +++++++++++
.../org/apache/geaflow/ai/LdbcPromptFormatter.java | 315 ++++++++++++++++++
.../java/org/apache/geaflow/ai/MockChatRobot.java | 49 +++
.../org/apache/geaflow/ai/MutableGraphTest.java | 142 ++++++++
...-0ea3b18b-e932-4946-9be9-d17b750eafea-c0001.csv | 58 ++++
...0-77bb2680-0143-453b-a57e-237bb2468cf1-c000.csv | 36 ++
...0-d5685860-f0ca-4b57-98b1-cc9b688b30c6-c000.csv | 5 +
...0-86f5e365-c8eb-42b8-9c45-be1136749ebf-c000.csv | 2 +
...0-fed82766-b5eb-4724-bf11-2cb6b0c498d1-c000.csv | 1 +
...0-3217ef34-4a71-4b35-a6c7-40d0ce55e745-c000.csv | 2 +
...0-f8e268f3-1ce7-4f7c-a636-2afefbb1a96b-c000.csv | 2 +
...0-8f8b7c0e-8a61-43d0-b118-d45e51ac8346-c000.csv | 8 +
...0-fcbe7eed-213e-4044-82ac-1deb7607d428-c000.csv | 1 +
...0-ed92dadb-3b80-45de-a6ed-cb51324d9222-c000.csv | 2 +
...0-a90294ce-d86a-4f6a-b660-9367cc6530b9-c000.csv | 1 +
...0-4b9ded23-dbc4-4af1-99cd-2546b86e2a1e-c000.csv | 1 +
...0-d96c104a-09e8-4c00-8480-c5ff5bd0774e-c000.csv | 1 +
...0-8e928ee8-4c50-4b3a-a039-7df49c43271c-c000.csv | 3 +
...0-8119e7ba-eef1-4531-a329-fe69aae3a842-c000.csv | 1 +
...0-cc303aad-ca12-4d62-a0fa-f666cd4bd0a8-c000.csv | 1 +
...0-bbdf70c1-9235-4ae5-a5bd-315c602b7aa7-c000.csv | 1 +
...0-15c95f3c-1bb2-437a-88da-44454947912b-c000.csv | 16 +
...0-80467545-319b-45b9-9df7-5bf613102255-c000.csv | 2 +
...0-773b544a-a4e8-4669-9d72-6f9563e37e0a-c000.csv | 1 +
...0-8955972b-aaaf-431b-af04-bb8b8371303a-c000.csv | 1 +
...0-e23c300a-6036-4119-afaf-d4a2e45a602c-c000.csv | 1 +
...0-773c5c1f-ce07-41a9-ab10-836b6a201aab-c000.csv | 1 +
...0-ab6f4085-f12a-4818-a371-e07cbb2f8fe8-c000.csv | 20 ++
...0-7457dc74-44d7-4ee0-8201-9940057bf0e8-c000.csv | 13 +
...0-76abe36a-60da-4e94-82fa-326be3dd1915-c000.csv | 8 +
...0-514b3315-27ef-4bf2-b6c8-85454d8c50d1-c000.csv | 3 +
...0-552a5973-be8c-4a64-8495-12475edb9268-c000.csv | 1 +
...0-a7819ae9-3a8a-4b0d-bda9-42afd23b05b7-c000.csv | 1 +
...0-59a40ae1-065f-497c-a4f0-5630f603c3cd-c000.csv | 1 +
...0-cc5fb343-f815-4288-b7c0-8251d3d39696-c000.csv | 1 +
.../test/resources/index/LDBCEmbeddingIndexStore | 362 +++++++++++++++++++++
pom.xml | 23 +-
102 files changed, 5957 insertions(+), 10 deletions(-)
diff --git a/geaflow-ai/pom.xml b/geaflow-ai/pom.xml
new file mode 100644
index 000000000..75cea1e79
--- /dev/null
+++ b/geaflow-ai/pom.xml
@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ ~ Licensed to the Apache Software Foundation (ASF) under one
+ ~ or more contributor license agreements. See the NOTICE file
+ ~ distributed with this work for additional information
+ ~ regarding copyright ownership. The ASF licenses this file
+ ~ to you under the Apache License, Version 2.0 (the
+ ~ "License"); you may not use this file except in compliance
+ ~ with the License. You may obtain a copy of the License at
+ ~
+ ~ http://www.apache.org/licenses/LICENSE-2.0
+ ~
+ ~ Unless required by applicable law or agreed to in writing,
+ ~ software distributed under the License is distributed on an
+ ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ ~ KIND, either express or implied. See the License for the
+ ~ specific language governing permissions and limitations
+ ~ under the License.
+ -->
+
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xmlns="http://maven.apache.org/POM/4.0.0"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.apache.geaflow</groupId>
+ <artifactId>geaflow-parent</artifactId>
+ <version>0.8.0-SNAPSHOT</version>
+ </parent>
+
+ <artifactId>geaflow-ai</artifactId>
+
+ <properties>
+ <solon-mcp.version>3.5.1</solon-mcp.version>
+ <junit.version>5.10.1</junit.version>
+ <slf4j.version>1.7.15</slf4j.version>
+ <log4j.version>1.2.17</log4j.version>
+ <log4j.slf4j.version>2.17.1</log4j.slf4j.version>
+ <lmax.disrupter.veresion>3.4.4</lmax.disrupter.veresion>
+ <lucene.version>8.11.2</lucene.version>
+ </properties>
+
+ <dependencies>
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-api</artifactId>
+ <version>${slf4j.version}</version>
+ </dependency>
+
+ <!-- SLF4J to Log4j 1.2 Binding -->
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-log4j12</artifactId>
+ <version>${slf4j.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>log4j</groupId>
+ <artifactId>log4j</artifactId>
+ <version>${log4j.version}</version>
+ </dependency>
+
+ <!-- SLF4J to Log4j 2 Binding -->
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-slf4j-impl</artifactId>
+ <version>${log4j.slf4j.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-core</artifactId>
+ <version>${log4j.slf4j.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.logging.log4j</groupId>
+ <artifactId>log4j-api</artifactId>
+ <version>${log4j.slf4j.version}</version>
+ </dependency>
+
+ <!-- Lucene Core -->
+ <dependency>
+ <groupId>org.apache.lucene</groupId>
+ <artifactId>lucene-core</artifactId>
+ <version>${lucene.version}</version>
+ </dependency>
+
+ <!-- Lucene Query Parser -->
+ <dependency>
+ <groupId>org.apache.lucene</groupId>
+ <artifactId>lucene-queryparser</artifactId>
+ <version>${lucene.version}</version>
+ </dependency>
+
+ <dependency>
+ <groupId>com.lmax</groupId>
+ <artifactId>disruptor</artifactId>
+ <version>${lmax.disrupter.veresion}</version>
+ </dependency>
+
+ <dependency>
+ <groupId>org.apache.geaflow</groupId>
+ <artifactId>geaflow-api</artifactId>
+ <version>${project.version}</version>
+ </dependency>
+
+ <!-- test -->
+ <dependency>
+ <groupId>org.junit.jupiter</groupId>
+ <artifactId>junit-jupiter</artifactId>
+ <version>${junit.version}</version>
+ <scope>test</scope>
+ </dependency>
+ </dependencies>
+
+ <repositories>
+ <repository>
+ <id>sonatype</id>
+ <url>https://s01.oss.sonatype.org/content/repositories/snapshots</url>
+ <releases>
+ <enabled>false</enabled>
+ </releases>
+ <snapshots>
+ <enabled>true</enabled>
+ </snapshots>
+ </repository>
+ </repositories>
+
+</project>
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/GraphMemoryServer.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/GraphMemoryServer.java
new file mode 100644
index 000000000..f48324c7f
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/GraphMemoryServer.java
@@ -0,0 +1,110 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.graph.GraphAccessor;
+import org.apache.geaflow.ai.index.EmbeddingIndexStore;
+import org.apache.geaflow.ai.index.EntityAttributeIndexStore;
+import org.apache.geaflow.ai.index.IndexStore;
+import org.apache.geaflow.ai.operator.EmbeddingOperator;
+import org.apache.geaflow.ai.operator.SearchOperator;
+import org.apache.geaflow.ai.operator.SessionOperator;
+import org.apache.geaflow.ai.search.VectorSearch;
+import org.apache.geaflow.ai.session.SessionManagement;
+import org.apache.geaflow.ai.subgraph.SubGraph;
+import org.apache.geaflow.ai.verbalization.Context;
+import org.apache.geaflow.ai.verbalization.VerbalizationFunction;
+
+public class GraphMemoryServer {
+
+ private final SessionManagement sessionManagement = SessionManagement.INSTANCE;
+ private final List<GraphAccessor> graphAccessors = new ArrayList<>();
+ private final List<IndexStore> indexStores = new ArrayList<>();
+
+ public void addGraphAccessor(GraphAccessor graph) {
+ if (graph != null) {
+ graphAccessors.add(graph);
+ }
+ }
+
+ public void addIndexStore(IndexStore indexStore) {
+ if (indexStore != null) {
+ indexStores.add(indexStore);
+ }
+ }
+
+ public String createSession() {
+ String sessionId = sessionManagement.createSession();
+ if (sessionId == null) {
+ throw new RuntimeException("Cannot create new session");
+ }
+ return sessionId;
+ }
+
+ public String search(VectorSearch search) {
+ String sessionId = search.getSessionId();
+ if (sessionId == null || sessionId.isEmpty()) {
+ throw new RuntimeException("Session id is empty");
+ }
+ if (!sessionManagement.sessionExists(sessionId)) {
+ sessionManagement.createSession(sessionId);
+ }
+
+ for (IndexStore indexStore : indexStores) {
+ if (indexStore instanceof EntityAttributeIndexStore) {
+ SessionOperator searchOperator = new SessionOperator(graphAccessors.get(0), indexStore);
+ applySearch(sessionId, searchOperator, search);
+ }
+ if (indexStore instanceof EmbeddingIndexStore) {
+ EmbeddingOperator embeddingOperator = new EmbeddingOperator(graphAccessors.get(0), indexStore);
+ applySearch(sessionId, embeddingOperator, search);
+ }
+ }
+ return sessionId;
+ }
+
+ private void applySearch(String sessionId, SearchOperator operator, VectorSearch search) {
+ SessionManagement manager = SessionManagement.INSTANCE;
+ if (!manager.sessionExists(sessionId)) {
+ return;
+ }
+ List<SubGraph> result = operator.apply(manager.getSubGraph(sessionId), search);
+ manager.setSubGraph(sessionId, result);
+ }
+
+ public Context verbalize(String sessionId, VerbalizationFunction verbalizationFunction) {
+ List<SubGraph> subGraphList = sessionManagement.getSubGraph(sessionId);
+ List<String> subGraphStringList = new ArrayList<>(subGraphList.size());
+ for (SubGraph subGraph : subGraphList) {
+ subGraphStringList.add(verbalizationFunction.verbalize(subGraph));
+ }
+ subGraphStringList = subGraphStringList.stream().sorted().collect(Collectors.toList());
+ StringBuilder stringBuilder = new StringBuilder();
+ for (String subGraph : subGraphStringList) {
+ stringBuilder.append(subGraph).append("\n");
+ }
+ stringBuilder.append(verbalizationFunction.verbalizeGraphSchema());
+ return new Context(stringBuilder.toString());
+ }
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/ErrorCode.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/ErrorCode.java
new file mode 100644
index 000000000..34125de39
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/ErrorCode.java
@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common;
+
+public class ErrorCode {
+
+ public static final int SUCCESS = 0;
+ public static final int GRAPH_ENTITY_GROUP_NOT_EXISTS = 100001;
+ public static final int GRAPH_ENTITY_GROUP_NOT_MATCH = 100002;
+ public static final int GRAPH_ENTITY_GROUP_INSERT_FAILED = 100003;
+ public static final int GRAPH_ENTITY_GROUP_UPDATE_FAILED = 100004;
+ public static final int GRAPH_ENTITY_GROUP_REMOVE_FAILED = 100005;
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/config/Constants.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/config/Constants.java
new file mode 100644
index 000000000..676ab0810
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/config/Constants.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.config;
+
+public class Constants {
+
+ public static String MODEL_CONTEXT_ROLE_USER = "user";
+ public static String PREFIX_V = "V";
+ public static String PREFIX_E = "E";
+ public static String PREFIX_GRAPH = "GRAPH";
+ public static String PREFIX_TMP_SESSION = "TmpSession-";
+
+ public static int HTTP_CALL_TIMEOUT_SECONDS = 300;
+ public static int HTTP_CONNECT_TIMEOUT_SECONDS = 300;
+ public static int HTTP_READ_TIMEOUT_SECONDS = 300;
+ public static int HTTP_WRITE_TIMEOUT_SECONDS = 300;
+
+ public static int MODEL_CLIENT_RETRY_TIMES = 10;
+ public static int MODEL_CLIENT_RETRY_INTERVAL_MS = 3000;
+
+ public static int EMBEDDING_INDEX_STORE_BATCH_SIZE = 32;
+ public static int EMBEDDING_INDEX_STORE_REPORT_SIZE = 100;
+ public static int EMBEDDING_INDEX_STORE_FLUSH_WRITE_SIZE = 1024;
+ public static int EMBEDDING_INDEX_STORE_SPLIT_TEXT_CHUNK_SIZE = 128;
+
+ public static double EMBEDDING_OPERATE_DEFAULT_THRESHOLD = 0.5;
+ public static int EMBEDDING_OPERATE_DEFAULT_TOPN = 50;
+ public static int GRAPH_SEARCH_STORE_DEFAULT_TOPN = 30;
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/config/GraphMemoryConfigKeys.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/config/GraphMemoryConfigKeys.java
new file mode 100644
index 000000000..5f288787d
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/config/GraphMemoryConfigKeys.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.config;
+
+public class GraphMemoryConfigKeys {
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/AbstractModelService.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/AbstractModelService.java
new file mode 100644
index 000000000..a2ffd2b49
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/AbstractModelService.java
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+public abstract class AbstractModelService {
+
+ public ModelConfig getModelConfig() {
+ return modelConfig;
+ }
+
+ public void setModelConfig(ModelConfig modelConfig) {
+ this.modelConfig = modelConfig;
+ }
+
+ private ModelConfig modelConfig;
+
+ public AbstractModelService(ModelConfig modelConfig) {
+ this.modelConfig = modelConfig;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ChatService.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ChatService.java
new file mode 100644
index 000000000..4101a6231
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ChatService.java
@@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+public class ChatService extends AbstractModelService {
+
+ public ChatService() {
+ super(new ModelConfig());
+ }
+
+ public ChatService(String model) {
+ super(new ModelConfig());
+ getModelConfig().setModel(model);
+ }
+
+ public String chat(String sentence) {
+ RemoteModelClient model = new RemoteModelClient();
+ ModelContext context = ModelContext.emptyContext();
+ context.setModelInfo(getModelConfig());
+ context.userSay(sentence);
+ return model.chat(context);
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/EmbeddingResponse.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/EmbeddingResponse.java
new file mode 100644
index 000000000..d8bcd9a34
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/EmbeddingResponse.java
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+import com.google.gson.annotations.SerializedName;
+import java.util.List;
+
+public class EmbeddingResponse {
+
+ public List<EmbeddingVector> data;
+ public String model;
+ public String object;
+ public Response.Usage usage;
+
+ public static class EmbeddingVector {
+ public int index;
+ public double[] embedding;
+ }
+
+ public static class Usage {
+ @SerializedName("completion_tokens")
+ public int completionTokens;
+ @SerializedName("prompt_tokens")
+ public int promptTokens;
+ @SerializedName("total_tokens")
+ public int totalTokens;
+
+ }
+
+}
\ No newline at end of file
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/EmbeddingService.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/EmbeddingService.java
new file mode 100644
index 000000000..2ad134762
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/EmbeddingService.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+import com.google.gson.Gson;
+import java.util.List;
+
+public class EmbeddingService extends AbstractModelService {
+
+ public EmbeddingService() {
+ super(new ModelConfig());
+ }
+
+ public EmbeddingService(String model) {
+ super(new ModelConfig());
+ getModelConfig().setModel(model);
+ }
+
+ public String embedding(String... inputs) {
+ RemoteModelClient model = new RemoteModelClient();
+ ModelEmbedding context = ModelEmbedding.embedding(getModelConfig(), inputs);
+ List<EmbeddingResult> embeddingResults = model.embedding(context);
+ Gson gson = new Gson();
+ StringBuilder builder = new StringBuilder();
+ for (EmbeddingResult result : embeddingResults) {
+ builder.append("\n");
+ String json = gson.toJson(result);
+ builder.append(json);
+ }
+ return builder.toString();
+ }
+
+ public static class EmbeddingResult {
+ public String input;
+ public double[] embedding;
+
+ public EmbeddingResult(String input, double[] embedding) {
+ this.input = input;
+ this.embedding = embedding;
+ }
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelConfig.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelConfig.java
new file mode 100644
index 000000000..55ab1fcc1
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelConfig.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+public class ModelConfig {
+
+ private String model;
+ private String url;
+ private String api;
+ private String userToken;
+
+ public ModelConfig() {
+ }
+
+ public ModelConfig(String model, String url, String api, String userToken) {
+ this.model = model;
+ this.url = url;
+ this.api = api;
+ this.userToken = userToken;
+ }
+
+ public String getModel() {
+ return model;
+ }
+
+ public void setModel(String model) {
+ this.model = model;
+ }
+
+ public String getUserToken() {
+ return userToken;
+ }
+
+ public void setUserToken(String userToken) {
+ this.userToken = userToken;
+ }
+
+ public String getUrl() {
+ return url;
+ }
+
+ public void setUrl(String url) {
+ this.url = url;
+ }
+
+ public String getApi() {
+ return api;
+ }
+
+ public void setApi(String api) {
+ this.api = api;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelContext.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelContext.java
new file mode 100644
index 000000000..94dfc7952
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelContext.java
@@ -0,0 +1,73 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+import org.apache.geaflow.ai.common.config.Constants;
+
+public class ModelContext {
+
+ public String model;
+ public ModelMessage[] messages;
+ private ModelConfig modelInfo;
+
+ public ModelContext(ModelConfig modelInfo, ModelMessage[] messages) {
+ this.modelInfo = modelInfo;
+ this.messages = messages;
+ if (this.modelInfo != null) {
+ this.model = this.modelInfo.getModel();
+ }
+ }
+
+ public static ModelContext emptyContext() {
+ return new ModelContext(null, new ModelMessage[0]);
+ }
+
+ public ModelConfig getModelInfo() {
+ return modelInfo;
+ }
+
+ public void setModelInfo(ModelConfig modelInfo) {
+ this.modelInfo = modelInfo;
+ if (this.modelInfo != null) {
+ this.model = this.modelInfo.getModel();
+ }
+ }
+
+ public ModelContext userSay(String sentence) {
+ ModelMessage msg = new ModelMessage(Constants.MODEL_CONTEXT_ROLE_USER, sentence);
+ ModelMessage[] newMessages = new ModelMessage[messages.length + 1];
+ for (int i = 0; i < messages.length; i++) {
+ newMessages[i] = messages[i];
+ }
+ newMessages[messages.length] = msg;
+ messages = newMessages;
+ return this;
+ }
+
+
+ public ModelMessage[] getMessages() {
+ return messages;
+ }
+
+ public void setMessages(ModelMessage[] messages) {
+ this.messages = messages;
+ }
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelEmbedding.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelEmbedding.java
new file mode 100644
index 000000000..6cfe4a428
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelEmbedding.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+public class ModelEmbedding {
+
+ public String model;
+ public String[] input;
+ private ModelConfig modelInfo;
+
+ public ModelEmbedding(ModelConfig modelInfo, String[] inputs) {
+ this.modelInfo = modelInfo;
+ this.input = inputs;
+ if (this.modelInfo != null) {
+ this.model = this.modelInfo.getModel();
+ }
+ }
+
+ public static ModelEmbedding embedding(ModelConfig modelInfo, String... strings) {
+ return new ModelEmbedding(modelInfo, strings);
+ }
+
+ public ModelConfig getModelInfo() {
+ return modelInfo;
+ }
+
+ public void setModelInfo(ModelConfig modelInfo) {
+ this.modelInfo = modelInfo;
+ if (this.modelInfo != null) {
+ this.model = this.modelInfo.getModel();
+ }
+ }
+
+ public String getModel() {
+ return model;
+ }
+
+ public void setModel(String model) {
+ this.model = model;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelMessage.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelMessage.java
new file mode 100644
index 000000000..417fce017
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelMessage.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+public class ModelMessage {
+
+ public String role;
+ public String content;
+
+ public ModelMessage(String role, String content) {
+ this.role = role;
+ this.content = content;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelUtils.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelUtils.java
new file mode 100644
index 000000000..91a27d5e7
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/ModelUtils.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.geaflow.ai.common.config.Constants;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.graph.GraphVertex;
+
+public class ModelUtils {
+
+ public static List<String> splitLongText(int maxChunkSize, String... textList) {
+ List<String> chunks = new ArrayList<>();
+ for (String text : textList) {
+ for (int i = 0; i < text.length(); i += maxChunkSize) {
+ int end = Math.min(i + maxChunkSize, text.length());
+ chunks.add(text.substring(i, end));
+ }
+ }
+ return chunks;
+ }
+
+ public static String getGraphEntityKey(GraphEntity entity) {
+ if (entity instanceof GraphVertex) {
+ return Constants.PREFIX_V + ((GraphVertex) entity).getVertex().getId() + entity.getLabel();
+ } else if (entity instanceof GraphEdge) {
+ return Constants.PREFIX_E + ((GraphEdge) entity).getEdge().getSrcId()
+ + entity.getLabel() + ((GraphEdge) entity).getEdge().getDstId();
+ }
+ return "";
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/OkHttpDirectConnector.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/OkHttpDirectConnector.java
new file mode 100644
index 000000000..b7d1d3d23
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/OkHttpDirectConnector.java
@@ -0,0 +1,120 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+import com.google.gson.Gson;
+import java.io.IOException;
+import java.util.Objects;
+import java.util.concurrent.TimeUnit;
+import okhttp3.MediaType;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.RequestBody;
+import org.apache.geaflow.ai.common.config.Constants;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class OkHttpDirectConnector {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(OkHttpDirectConnector.class);
+
+ private static final Gson GSON = new Gson();
+ private static OkHttpClient client;
+
+ private final String endpoint;
+ private final String useApi;
+ private final String userToken;
+
+ public OkHttpDirectConnector(String endpoint, String useApi, String userToken) {
+ this.endpoint = endpoint;
+ this.useApi = useApi;
+ this.userToken = userToken;
+ if (client == null) {
+ OkHttpClient.Builder builder = new OkHttpClient.Builder();
+ builder.callTimeout(Constants.HTTP_CALL_TIMEOUT_SECONDS, TimeUnit.SECONDS);
+ builder.connectTimeout(Constants.HTTP_CONNECT_TIMEOUT_SECONDS, TimeUnit.SECONDS);
+ builder.readTimeout(Constants.HTTP_READ_TIMEOUT_SECONDS, TimeUnit.SECONDS);
+ builder.writeTimeout(Constants.HTTP_WRITE_TIMEOUT_SECONDS, TimeUnit.SECONDS);
+ client = builder.build();
+ }
+ }
+
+ public org.apache.geaflow.ai.common.model.Response post(String bodyJson) {
+ RequestBody requestBody = RequestBody.create(
+ MediaType.parse("application/json; charset=utf-8"),
+ bodyJson
+ );
+
+ String url = endpoint + useApi;
+ LOGGER.info(url);
+ Request request = new Request.Builder()
+ .url(url)
+ .addHeader("Authorization", "Bearer " + userToken)
+ .addHeader("Content-Type", "application/json; charset=utf-8")
+ .post(requestBody)
+ .build();
+
+ try (okhttp3.Response response = client.newCall(request).execute()) {
+ if (response.isSuccessful() && response.body() != null) {
+ String responseBody = response.body().string();
+ return GSON.fromJson(responseBody, org.apache.geaflow.ai.common.model.Response.class);
+ } else {
+ LOGGER.info("Request failed with code: " + response.code());
+ }
+ } catch (IOException e) {
+ LOGGER.error("Http connect exception", e);
+ throw new RuntimeException(e);
+ }
+ return null;
+ }
+
+
+ public EmbeddingResponse embeddingPost(String bodyJson) {
+ RequestBody requestBody = RequestBody.create(
+ MediaType.parse("application/json; charset=utf-8"),
+ bodyJson
+ );
+
+ String url = endpoint + useApi;
+ Request request = new Request.Builder()
+ .url(url)
+ .addHeader("Authorization", "Bearer " + userToken)
+ .addHeader("Content-Type", "application/json; charset=utf-8")
+ .post(requestBody)
+ .build();
+
+ try (okhttp3.Response response = client.newCall(request).execute()) {
+ if (response.isSuccessful() && response.body() != null) {
+ String responseBody = response.body().string();
+ return GSON.fromJson(responseBody, EmbeddingResponse.class);
+ } else {
+ LOGGER.info("Request failed with code: " + response.code());
+ LOGGER.info("Request failed with request bodyJson: "
+ + bodyJson);
+ LOGGER.info("Request failed with response body: "
+ + Objects.requireNonNull(response.body()).string());
+ }
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ return null;
+ }
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/RemoteModelClient.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/RemoteModelClient.java
new file mode 100644
index 000000000..c37e5e7ce
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/RemoteModelClient.java
@@ -0,0 +1,78 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+import com.google.gson.Gson;
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.geaflow.ai.common.config.Constants;
+import org.apache.geaflow.common.utils.RetryCommand;
+
+public class RemoteModelClient {
+
+ public String chat(ModelContext context) {
+ ModelConfig info = context.getModelInfo();
+ OkHttpDirectConnector connector = new OkHttpDirectConnector(
+ info.getUrl(), info.getApi(), info.getUserToken());
+ String request = new Gson().toJson(context);
+ org.apache.geaflow.ai.common.model.Response response = RetryCommand.run(() -> {
+ return connector.post(request);
+ }, Constants.MODEL_CLIENT_RETRY_TIMES, Constants.MODEL_CLIENT_RETRY_INTERVAL_MS);
+ if (response.choices != null && !response.choices.isEmpty()) {
+ for (Response.Choice choice : response.choices) {
+ if (choice.message != null) {
+ return choice.message.content;
+ }
+ }
+
+ }
+ return null;
+ }
+
+ public List<EmbeddingService.EmbeddingResult> embedding(ModelEmbedding context) {
+ ModelConfig info = context.getModelInfo();
+ OkHttpDirectConnector connector = new OkHttpDirectConnector(
+ info.getUrl(), info.getApi(), info.getUserToken());
+ ModelEmbedding requestContext = new ModelEmbedding(null, context.input);
+ requestContext.setModel(context.getModel());
+ String request = new Gson().toJson(requestContext);
+ final EmbeddingResponse response = RetryCommand.run(() -> {
+ return connector.embeddingPost(request);
+ }, Constants.MODEL_CLIENT_RETRY_TIMES, Constants.MODEL_CLIENT_RETRY_INTERVAL_MS);
+ if (response == null) {
+ return new ArrayList<>();
+ }
+ List<EmbeddingService.EmbeddingResult> embeddingResults = new ArrayList<>();
+ if (response.data == null) {
+ throw new RuntimeException("Embedding model response is null");
+ }
+ for (EmbeddingResponse.EmbeddingVector v : response.data) {
+ int index = v.index;
+ if (index >= context.input.length) {
+ throw new RuntimeException("Embedding model response contains invalid index");
+ }
+ String input = context.input[index];
+ double[] vector = v.embedding;
+ EmbeddingService.EmbeddingResult result = new EmbeddingService.EmbeddingResult(input, vector);
+ embeddingResults.add(result);
+ }
+ return embeddingResults;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/Response.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/Response.java
new file mode 100644
index 000000000..b53c2759e
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/common/model/Response.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.common.model;
+
+import com.google.gson.annotations.SerializedName;
+import java.util.List;
+
+
+public class Response {
+ public String id;
+ @SerializedName("created")
+ public long createdTimestamp;
+ public String model;
+ public String object;
+ public List<Choice> choices;
+ public Usage usage;
+ @SerializedName("system_fingerprint")
+ public String systemFingerprint;
+
+ public static class Choice {
+ public String finishReason;
+ public int index;
+ public Message message;
+ public Object logprobs;
+ }
+
+ public static class Message {
+ public String role;
+ public String content;
+ }
+
+ public static class Usage {
+ @SerializedName("completion_tokens")
+ public int completionTokens;
+ @SerializedName("prompt_tokens")
+ public int promptTokens;
+ @SerializedName("total_tokens")
+ public int totalTokens;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/engine/GraphComputeEngine.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/engine/GraphComputeEngine.java
new file mode 100644
index 000000000..6942e9e0a
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/engine/GraphComputeEngine.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.engine;
+
+public interface GraphComputeEngine {
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/EmptyGraphAccessor.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/EmptyGraphAccessor.java
new file mode 100644
index 000000000..e0910d385
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/EmptyGraphAccessor.java
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import org.apache.geaflow.ai.graph.io.GraphSchema;
+
+public class EmptyGraphAccessor implements GraphAccessor {
+
+ @Override
+ public GraphSchema getGraphSchema() {
+ return null;
+ }
+
+ @Override
+ public GraphVertex getVertex(String label, String id) {
+ return null;
+ }
+
+ @Override
+ public List<GraphEdge> getEdge(String label, String src, String dst) {
+ return null;
+ }
+
+ @Override
+ public Iterator<GraphVertex> scanVertex() {
+ return Collections.emptyIterator();
+ }
+
+ @Override
+ public Iterator<GraphEdge> scanEdge(GraphVertex vertex) {
+ return Collections.emptyIterator();
+ }
+
+ @Override
+ public List<GraphEntity> expand(GraphEntity entity) {
+ return new ArrayList<>();
+ }
+
+ @Override
+ public GraphAccessor copy() {
+ return new EmptyGraphAccessor();
+ }
+
+ @Override
+ public String getType() {
+ return EmptyGraphAccessor.class.getSimpleName();
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/Graph.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/Graph.java
new file mode 100644
index 000000000..8322bae16
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/Graph.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+import java.util.Collection;
+import java.util.Iterator;
+import org.apache.geaflow.ai.graph.io.Edge;
+import org.apache.geaflow.ai.graph.io.GraphSchema;
+import org.apache.geaflow.ai.graph.io.Vertex;
+
+public interface Graph {
+
+ GraphSchema getGraphSchema();
+
+ Vertex getVertex(String label, String id);
+
+ int removeVertex(String label, String id);
+
+ int updateVertex(Vertex newVertex);
+
+ int addVertex(Vertex newVertex);
+
+ Collection<Edge> getEdge(String label, String src, String dst);
+
+ int removeEdge(Edge edge);
+
+ int addEdge(Edge newEdge);
+
+ Iterator<Edge> scanEdge(Vertex vertex);
+
+ Iterator<Vertex> scanVertex();
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphAccessor.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphAccessor.java
new file mode 100644
index 000000000..82dd1cd57
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphAccessor.java
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+import java.util.Iterator;
+import java.util.List;
+import org.apache.geaflow.ai.graph.io.GraphSchema;
+
+public interface GraphAccessor {
+
+ GraphSchema getGraphSchema();
+
+ GraphVertex getVertex(String label, String id);
+
+ List<GraphEdge> getEdge(String label, String src, String dst);
+
+ Iterator<GraphVertex> scanVertex();
+
+ Iterator<GraphEdge> scanEdge(GraphVertex vertex);
+
+ List<GraphEntity> expand(GraphEntity entity);
+
+ GraphAccessor copy();
+
+ String getType();
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphEdge.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphEdge.java
new file mode 100644
index 000000000..0dd3d2216
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphEdge.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+import java.util.Objects;
+import org.apache.geaflow.ai.graph.io.Edge;
+
+public class GraphEdge implements GraphEntity {
+
+ private final Edge edge;
+
+ public GraphEdge(Edge edge) {
+ this.edge = Objects.requireNonNull(edge);
+ }
+
+ public Edge getEdge() {
+ return edge;
+ }
+
+ @Override
+ public String getLabel() {
+ return edge.getLabel();
+ }
+
+ @Override
+ public String toString() {
+ return edge.toString();
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ GraphEdge graphEdge = (GraphEdge) o;
+ return Objects.equals(edge, graphEdge.edge);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(edge);
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphEntity.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphEntity.java
new file mode 100644
index 000000000..5d63649a4
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphEntity.java
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+public interface GraphEntity {
+
+ String getLabel();
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphVertex.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphVertex.java
new file mode 100644
index 000000000..5e3d58889
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/GraphVertex.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+import java.util.Objects;
+import org.apache.geaflow.ai.graph.io.Vertex;
+
+public class GraphVertex implements GraphEntity {
+
+ private final Vertex vertex;
+
+ public GraphVertex(Vertex vertex) {
+ this.vertex = Objects.requireNonNull(vertex);
+ }
+
+ public Vertex getVertex() {
+ return vertex;
+ }
+
+ @Override
+ public String getLabel() {
+ return vertex.getLabel();
+ }
+
+ @Override
+ public String toString() {
+ return vertex.toString();
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ GraphVertex that = (GraphVertex) o;
+ return Objects.equals(vertex, that.vertex);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(vertex);
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/LocalMemoryGraphAccessor.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/LocalMemoryGraphAccessor.java
new file mode 100644
index 000000000..98614bc4a
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/LocalMemoryGraphAccessor.java
@@ -0,0 +1,158 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.graph.io.*;
+
+public class LocalMemoryGraphAccessor implements GraphAccessor {
+
+ private final MemoryGraph graph;
+
+ public LocalMemoryGraphAccessor(ClassLoader classLoader, String resourcePath, Long limit,
+ Function<Vertex, Vertex> vertexMapper,
+ Function<Edge, Edge> edgeMapper) {
+ try {
+ this.graph = GraphFileReader.getGraph(classLoader, resourcePath, limit,
+ vertexMapper, edgeMapper);
+ } catch (Throwable e) {
+ throw new RuntimeException("Init local graph error", e);
+ }
+ }
+
+ public LocalMemoryGraphAccessor(MemoryGraph memoryGraph) {
+ this.graph = memoryGraph;
+ }
+
+ @Override
+ public GraphSchema getGraphSchema() {
+ return graph.getGraphSchema();
+ }
+
+ @Override
+ public GraphVertex getVertex(String label, String id) {
+ Vertex innerVertex = graph.getVertex(label, id);
+ if (innerVertex == null) {
+ return null;
+ }
+ return new GraphVertex(innerVertex);
+ }
+
+ @Override
+ public List<GraphEdge> getEdge(String label, String src, String dst) {
+ List<Edge> innerEdges = graph.getEdge(label, src, dst);
+ if (innerEdges == null) {
+ return Collections.emptyList();
+ }
+ return innerEdges.stream().map(GraphEdge::new).collect(Collectors.toList());
+ }
+
+ @Override
+ public Iterator<GraphVertex> scanVertex() {
+ return new GraphVertexIterator(graph.scanVertex());
+ }
+
+ @Override
+ public Iterator<GraphEdge> scanEdge(GraphVertex vertex) {
+ return new GraphEdgeIterator(graph.scanEdge(vertex.getVertex()));
+ }
+
+ @Override
+ public List<GraphEntity> expand(GraphEntity entity) {
+ List<GraphEntity> results = new ArrayList<>();
+ if (entity instanceof GraphVertex) {
+ Iterator<Edge> iterator = graph.scanEdge(((GraphVertex) entity).getVertex());
+ while (iterator.hasNext()) {
+ results.add(new GraphEdge(iterator.next()));
+ }
+ } else if (entity instanceof GraphEdge) {
+ GraphEdge graphEdge = (GraphEdge) entity;
+ Vertex srcVertex = graph.getVertex(null, graphEdge.getEdge().getSrcId());
+ Vertex dstVertex = graph.getVertex(null, graphEdge.getEdge().getDstId());
+ if (srcVertex != null) {
+ results.add(new GraphVertex(srcVertex));
+ }
+ if (dstVertex != null) {
+ results.add(new GraphVertex(dstVertex));
+ }
+ }
+ return results;
+ }
+
+ public MemoryMutableGraph getMutableGraph() {
+ return new MemoryMutableGraph(graph);
+ }
+
+ @Override
+ public GraphAccessor copy() {
+ return this;
+ }
+
+ @Override
+ public String getType() {
+ return this.getClass().getSimpleName();
+ }
+
+
+ private static class GraphVertexIterator implements Iterator<GraphVertex> {
+
+ private final Iterator<Vertex> vertexIterator;
+
+ public GraphVertexIterator(Iterator<Vertex> vertexIterator) {
+ this.vertexIterator = vertexIterator;
+ }
+
+ @Override
+ public boolean hasNext() {
+ return vertexIterator.hasNext();
+ }
+
+ @Override
+ public GraphVertex next() {
+ Vertex nextVertex = vertexIterator.next();
+ return new GraphVertex(nextVertex);
+ }
+ }
+
+ private static class GraphEdgeIterator implements Iterator<GraphEdge> {
+ private final Iterator<Edge> delegate;
+
+ public GraphEdgeIterator(Iterator<Edge> delegate) {
+ this.delegate = delegate;
+ }
+
+ @Override
+ public boolean hasNext() {
+ return delegate.hasNext();
+ }
+
+ @Override
+ public GraphEdge next() {
+ Edge edge = delegate.next();
+ return new GraphEdge(edge);
+ }
+ }
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/MemoryMutableGraph.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/MemoryMutableGraph.java
new file mode 100644
index 000000000..7c9a3a613
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/MemoryMutableGraph.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+import org.apache.geaflow.ai.graph.io.Edge;
+import org.apache.geaflow.ai.graph.io.MemoryGraph;
+import org.apache.geaflow.ai.graph.io.Vertex;
+
+public class MemoryMutableGraph implements MutableGraph {
+
+ private final MemoryGraph graph;
+
+ public MemoryMutableGraph(MemoryGraph graph) {
+ this.graph = graph;
+ }
+
+ @Override
+ public int removeVertex(String label, String id) {
+ return this.graph.removeVertex(label, id);
+ }
+
+ @Override
+ public int updateVertex(Vertex newVertex) {
+ return this.graph.updateVertex(newVertex);
+ }
+
+ @Override
+ public int addVertex(Vertex newVertex) {
+ return this.graph.addVertex(newVertex);
+ }
+
+ @Override
+ public int removeEdge(Edge edge) {
+ return this.graph.removeEdge(edge);
+ }
+
+ @Override
+ public int addEdge(Edge newEdge) {
+ return this.graph.addEdge(newEdge);
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/MutableGraph.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/MutableGraph.java
new file mode 100644
index 000000000..8ad84891c
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/MutableGraph.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph;
+
+import org.apache.geaflow.ai.graph.io.Edge;
+import org.apache.geaflow.ai.graph.io.Vertex;
+
+public interface MutableGraph {
+
+ int removeVertex(String label, String id);
+
+ int updateVertex(Vertex newVertex);
+
+ int addVertex(Vertex newVertex);
+
+ int removeEdge(Edge edge);
+
+ int addEdge(Edge newEdge);
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/CsvFileReader.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/CsvFileReader.java
new file mode 100644
index 000000000..28f4e8c0a
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/CsvFileReader.java
@@ -0,0 +1,153 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class CsvFileReader {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(CsvFileReader.class);
+
+ List<String> colSchema;
+ Map<String, List<String>> fileContent;
+ long limit;
+
+ public CsvFileReader(long limit) {
+ this.colSchema = new ArrayList<>();
+ this.fileContent = new HashMap<>();
+ this.limit = limit;
+ }
+
+ public void readCsvFile(String fileName) throws IOException {
+ InputStream inputStream = getClass().getClassLoader().getResourceAsStream(fileName);
+ if (inputStream == null) {
+ throw new IOException("Cannot find the file: " + fileName);
+ }
+
+ long count = 0;
+ try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
+ String line;
+ boolean isFirstLine = true;
+
+ while ((line = reader.readLine()) != null) {
+ count++;
+ if (isFirstLine) {
+ parseHeader(line);
+ isFirstLine = false;
+ } else {
+ parseDataRow(line);
+ }
+ if (count > limit) {
+ break;
+ }
+ }
+ }
+ }
+
+ private void parseHeader(String headerLine) {
+ String[] headers = headerLine.split("\\|");
+
+ colSchema.clear();
+ fileContent.clear();
+
+ for (String header : headers) {
+ colSchema.add(header.trim());
+ fileContent.put(header.trim(), new ArrayList<>());
+ }
+ }
+
+ private void parseDataRow(String dataLine) {
+ if (dataLine == null || dataLine.trim().isEmpty()) {
+ return;
+ }
+
+ String[] values = dataLine.split("\\|");
+ if (values.length != colSchema.size()) {
+ System.err.println("WARNING: line number does not match - " + dataLine);
+ return;
+ }
+
+ for (int i = 0; i < colSchema.size(); i++) {
+ String columnName = colSchema.get(i);
+ String value = values[i].trim();
+ fileContent.get(columnName).add(value);
+ }
+ }
+
+ public List<String> getColSchema() {
+ return new ArrayList<>(colSchema);
+ }
+
+ public Map<String, List<String>> getFileContent() {
+ Map<String, List<String>> copy = new HashMap<>();
+ for (Map.Entry<String, List<String>> entry : fileContent.entrySet()) {
+ copy.put(entry.getKey(), new ArrayList<>(entry.getValue()));
+ }
+ return copy;
+ }
+
+ public List<String> getColumnData(String columnName) {
+ List<String> data = fileContent.get(columnName);
+ return data != null ? new ArrayList<>(data) : new ArrayList<>();
+ }
+
+ public int getRowCount() {
+ if (fileContent.isEmpty()) {
+ return 0;
+ }
+ return fileContent.values().iterator().next().size();
+ }
+
+ public List<String> getRow(int rowIndex) {
+ List<String> row = new ArrayList<>();
+ int rowCount = getRowCount();
+
+ if (rowIndex < 0 || rowIndex >= rowCount) {
+ throw new IndexOutOfBoundsException("Row index out of range: " + rowIndex);
+ }
+
+ for (String columnName : colSchema) {
+ List<String> columnData = fileContent.get(columnName);
+ if (columnData != null && rowIndex < columnData.size()) {
+ row.add(columnData.get(rowIndex));
+ }
+ }
+
+ return row;
+ }
+
+ public void printContent() {
+ LOGGER.info("ColName: " + colSchema);
+ LOGGER.info("Data content:");
+ for (Map.Entry<String, List<String>> entry : fileContent.entrySet()) {
+ LOGGER.info(entry.getKey() + ": " + entry.getValue());
+ }
+ LOGGER.info("Total row count: " + getRowCount());
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Edge.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Edge.java
new file mode 100644
index 000000000..fa4d98576
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Edge.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.List;
+import java.util.Objects;
+
+public class Edge {
+
+ private final String srcId;
+ private final String dstId;
+ private final String label;
+ private final List<String> values;
+
+ public Edge(String label, String srcId, String dstId, List<String> values) {
+ this.label = label;
+ this.srcId = srcId;
+ this.dstId = dstId;
+ this.values = values;
+ }
+
+ public List<String> getValues() {
+ return values;
+ }
+
+ public String getSrcId() {
+ return srcId;
+ }
+
+ public String getDstId() {
+ return dstId;
+ }
+
+ public String getLabel() {
+ return label;
+ }
+
+ @Override
+ public String toString() {
+ return label + " | " + srcId + " | " + dstId + " | " + String.join("|", values);
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ Edge edge = (Edge) o;
+ return Objects.equals(srcId, edge.srcId) && Objects.equals(dstId, edge.dstId) && Objects.equals(label, edge.label);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(srcId, dstId, label);
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EdgeGroup.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EdgeGroup.java
new file mode 100644
index 000000000..d134d823c
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EdgeGroup.java
@@ -0,0 +1,132 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.common.ErrorCode;
+
+public class EdgeGroup implements EntityGroup {
+
+ public final EdgeSchema edgeSchema;
+ private final List<Edge> edges;
+ private final Map<String, List<Integer>> index;
+ private final Map<String, List<Integer>> pointIndices;
+
+ public EdgeGroup(EdgeSchema edgeSchema, List<Edge> edges) {
+ this.edgeSchema = edgeSchema;
+ this.edges = edges;
+ this.index = new HashMap<>(edges.size());
+ this.pointIndices = new HashMap<>(10000);
+ buildIndex();
+ }
+
+ private void buildIndex() {
+ int index = 0;
+ for (Edge e : edges) {
+ String key = makeKey(e.getSrcId(), e.getDstId());
+ this.index.computeIfAbsent(key, k -> new ArrayList<>()).add(index);
+ this.pointIndices.computeIfAbsent(e.getSrcId(), k -> new ArrayList<>()).add(index);
+ this.pointIndices.computeIfAbsent(e.getDstId(), k -> new ArrayList<>()).add(index);
+ index++;
+ }
+ }
+
+ public EdgeSchema getEdgeSchema() {
+ return edgeSchema;
+ }
+
+ public List<Edge> getOutEdges() {
+ return edges;
+ }
+
+ public List<Edge> getOutEdges(String src) {
+ if (pointIndices.get(src) == null) {
+ return new ArrayList<>();
+ }
+ return pointIndices.get(src).stream().map(edges::get)
+ .filter(e -> e.getSrcId().equals(src))
+ .collect(Collectors.toList());
+ }
+
+ public List<Edge> getInEdges(String src) {
+ if (pointIndices.get(src) == null) {
+ return new ArrayList<>();
+ }
+ return pointIndices.get(src).stream().map(edges::get)
+ .filter(e -> e.getDstId().equals(src))
+ .collect(Collectors.toList());
+ }
+
+ public List<Edge> getEdge(String src, String dst) {
+ List<Integer> edgeIndices = index.get(makeKey(src, dst));
+ if (edgeIndices == null) {
+ return Collections.emptyList();
+ }
+ List<Edge> edges = new ArrayList<>(edgeIndices.size());
+ for (int i : edgeIndices) {
+ edges.add(this.edges.get(i));
+ }
+ return edges;
+ }
+
+ public int addEdge(Edge newEdge) {
+ if (newEdge == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_INSERT_FAILED;
+ }
+ this.edges.add(newEdge);
+ int index = this.edges.size() - 1;
+ String key = makeKey(newEdge.getSrcId(), newEdge.getDstId());
+ this.index.computeIfAbsent(key, k -> new ArrayList<>()).add(index);
+ this.pointIndices.computeIfAbsent(newEdge.getSrcId(), k -> new ArrayList<>()).add(index);
+ this.pointIndices.computeIfAbsent(newEdge.getDstId(), k -> new ArrayList<>()).add(index);
+ return ErrorCode.SUCCESS;
+ }
+
+ public int removeEdge(Edge edge) {
+ if (edge == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_REMOVE_FAILED;
+ }
+ String key = makeKey(edge.getSrcId(), edge.getDstId());
+ if (!index.containsKey(key)) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_REMOVE_FAILED;
+ }
+ List<Integer> indices = index.get(key);
+ List<Integer> deleteOffset = new ArrayList<>();
+ for (int offset : indices) {
+ Edge existsEdge = this.edges.get(offset);
+ boolean needDelete = existsEdge.equals(edge);
+ if (needDelete) {
+ edges.set(offset, null);
+ deleteOffset.add(offset);
+ }
+ }
+ for (int del : deleteOffset) {
+ this.index.get(key).remove(del);
+ this.pointIndices.get(edge.getSrcId()).remove(del);
+ this.pointIndices.get(edge.getDstId()).remove(del);
+ }
+ return ErrorCode.SUCCESS;
+ }
+
+ private String makeKey(String src, String dst) {
+ return src + "-" + dst;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EdgeSchema.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EdgeSchema.java
new file mode 100644
index 000000000..8e6ea0b0c
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EdgeSchema.java
@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.List;
+
+public class EdgeSchema implements Schema {
+
+ private final String label;
+ private final List<String> fields;
+ private final String srcIdField;
+ private final String dstIdField;
+
+ public EdgeSchema(String label, String srcIdField,
+ String dstIdField, List<String> fields) {
+ this.label = label;
+ this.fields = fields;
+ this.srcIdField = srcIdField;
+ this.dstIdField = dstIdField;
+ }
+
+ @Override
+ public List<String> getFields() {
+ return fields;
+ }
+
+ public String getLabel() {
+ return label;
+ }
+
+ public String getSrcIdField() {
+ return srcIdField;
+ }
+
+ public String getDstIdField() {
+ return dstIdField;
+ }
+
+ @Override
+ public String getName() {
+ return label;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EntityGroup.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EntityGroup.java
new file mode 100644
index 000000000..f754de103
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/EntityGroup.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+public interface EntityGroup {
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/GraphFileReader.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/GraphFileReader.java
new file mode 100644
index 000000000..87e72327c
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/GraphFileReader.java
@@ -0,0 +1,80 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+
+public class GraphFileReader {
+
+ public static MemoryGraph getGraph(ClassLoader classLoader, String path, long limit,
+ Function<Vertex, Vertex> vertexMapper,
+ Function<Edge, Edge> edgeMapper) throws IOException {
+ Map<String, List<String>> result = ResourceFileScanner.scanGraphLdbcSfFolder(classLoader, path);
+ GraphSchema graphSchema = new GraphSchema();
+ Map<String, EntityGroup> entities = new HashMap<>();
+ for (Map.Entry<String, List<String>> entry : result.entrySet()) {
+ String entityName = entry.getKey();
+ List<String> fileNames = entry.getValue();
+ for (String fileName : fileNames) {
+ CsvFileReader reader = new CsvFileReader(limit);
+ reader.readCsvFile(path + "/" + entityName + "/" + fileName);
+ List<String> colSchema = reader.getColSchema();
+ boolean isVertex = colSchema.contains("id");
+ if (isVertex) {
+ int idIndex = colSchema.indexOf("id");
+ if (idIndex < 0) {
+ throw new RuntimeException("Cannot find index of the id column.");
+ }
+ VertexSchema vertexSchema = new VertexSchema(entityName, colSchema.get(idIndex), colSchema);
+ List<Vertex> vertices = new ArrayList<>(reader.getRowCount());
+ for (int i = 0; i < reader.getRowCount(); i++) {
+ List<String> row = reader.getRow(i);
+ Vertex newVertex = vertexMapper.apply(new Vertex(entityName, row.get(idIndex), row));
+ vertices.add(newVertex);
+ }
+ VertexGroup vertexGroup = new VertexGroup(vertexSchema, vertices);
+ entities.put(entityName, vertexGroup);
+ graphSchema.addVertex(vertexSchema);
+ } else {
+ boolean containTime = colSchema.contains("creationDate");
+ int srcIdIndex = containTime ? 1 : 0;
+ int dstIdIndex = containTime ? 2 : 1;
+ EdgeSchema edgeSchema = new EdgeSchema(entityName, colSchema.get(srcIdIndex), colSchema.get(dstIdIndex), colSchema);
+ List<Edge> edges = new ArrayList<>(reader.getRowCount());
+ for (int i = 0; i < reader.getRowCount(); i++) {
+ List<String> row = reader.getRow(i);
+ Edge newEdge = edgeMapper.apply(new Edge(entityName, row.get(srcIdIndex), row.get(dstIdIndex), row));
+ edges.add(newEdge);
+ }
+ EdgeGroup edgeGroup = new EdgeGroup(edgeSchema, edges);
+ entities.put(entityName, edgeGroup);
+ graphSchema.addEdge(edgeSchema);
+ }
+ }
+ }
+ return new MemoryGraph(graphSchema, entities);
+ }
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/GraphSchema.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/GraphSchema.java
new file mode 100644
index 000000000..d18117841
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/GraphSchema.java
@@ -0,0 +1,113 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.geaflow.ai.common.config.Constants;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.verbalization.PromptFormatter;
+
+public class GraphSchema implements Schema {
+
+ private String graphName = Constants.PREFIX_GRAPH;
+ private final List<VertexSchema> vertexSchemaList;
+ private final List<EdgeSchema> edgeSchemaList;
+ private PromptFormatter promptFormatter;
+
+ public GraphSchema() {
+ this.vertexSchemaList = new ArrayList<>();
+ this.edgeSchemaList = new ArrayList<>();
+ }
+
+ public GraphSchema(List<VertexSchema> vertexSchemaList, List<EdgeSchema> edgeSchemaList) {
+ this.vertexSchemaList = vertexSchemaList;
+ this.edgeSchemaList = edgeSchemaList;
+ }
+
+ public void addVertex(VertexSchema vertexSchema) {
+ vertexSchemaList.add(vertexSchema);
+ }
+
+ public void addEdge(EdgeSchema edgeSchema) {
+ edgeSchemaList.add(edgeSchema);
+ }
+
+ public Schema getSchema(String label) {
+ for (VertexSchema vs : vertexSchemaList) {
+ if (label.equals(vs.getLabel())) {
+ return vs;
+ }
+ }
+ for (EdgeSchema vs : edgeSchemaList) {
+ if (label.equals(vs.getLabel())) {
+ return vs;
+ }
+ }
+ return null;
+ }
+
+ @Override
+ public List<String> getFields() {
+ return null;
+ }
+
+ public List<VertexSchema> getVertexSchemaList() {
+ return vertexSchemaList;
+ }
+
+ public List<EdgeSchema> getEdgeSchemaList() {
+ return edgeSchemaList;
+ }
+
+ public void setName(String graphName) {
+ this.graphName = graphName;
+ }
+
+ @Override
+ public String getName() {
+ return graphName;
+ }
+
+ public void setPromptFormatter(PromptFormatter promptFormatter) {
+ this.promptFormatter = promptFormatter;
+ }
+
+ public String getPrompt() {
+ return promptFormatter.prompt(this);
+ }
+
+ public String getPrompt(GraphVertex entity) {
+ if (promptFormatter == null) {
+ return entity.toString();
+ } else {
+ return promptFormatter.prompt(entity);
+ }
+ }
+
+ public String getPrompt(GraphEdge entity, GraphVertex start, GraphVertex end) {
+ if (promptFormatter == null) {
+ return entity.toString();
+ } else {
+ return promptFormatter.prompt(entity, start, end);
+ }
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/MemoryGraph.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/MemoryGraph.java
new file mode 100644
index 000000000..8b8592614
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/MemoryGraph.java
@@ -0,0 +1,191 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.*;
+import org.apache.geaflow.ai.common.ErrorCode;
+import org.apache.geaflow.ai.graph.Graph;
+
+public class MemoryGraph implements Graph {
+
+ public GraphSchema graphSchema;
+ public Map<String, EntityGroup> entities;
+
+ public MemoryGraph(GraphSchema graphSchema, Map<String, EntityGroup> entities) {
+ this.graphSchema = graphSchema;
+ this.entities = entities;
+ }
+
+ @Override
+ public GraphSchema getGraphSchema() {
+ return graphSchema;
+ }
+
+ public void setGraphSchema(GraphSchema graphSchema) {
+ this.graphSchema = graphSchema;
+ }
+
+ private EntityGroup getEntity(String entityName) {
+ return entities.get(entityName);
+ }
+
+ @Override
+ public Vertex getVertex(String label, String id) {
+ if (label == null) {
+ for (VertexSchema schema : getGraphSchema().getVertexSchemaList()) {
+ Vertex res = getVertex(schema.getLabel(), id);
+ if (res != null) {
+ return res;
+ }
+ }
+ } else {
+ VertexGroup vg = (VertexGroup) getEntity(label);
+ return vg.getVertex(id);
+ }
+ return null;
+ }
+
+ @Override
+ public int removeVertex(String label, String id) {
+ EntityGroup vg = entities.get(label);
+ if (vg == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_EXISTS;
+ }
+ if (!(vg instanceof VertexGroup)) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_MATCH;
+ }
+ VertexGroup vertexGroup = (VertexGroup) vg;
+ return vertexGroup.removeVertex(id);
+ }
+
+ @Override
+ public int updateVertex(Vertex newVertex) {
+ String label = newVertex.getLabel();
+ EntityGroup vg = entities.get(label);
+ if (vg == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_EXISTS;
+ }
+ if (!(vg instanceof VertexGroup)) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_MATCH;
+ }
+ VertexGroup vertexGroup = (VertexGroup) vg;
+ return vertexGroup.updateVertex(newVertex);
+ }
+
+ @Override
+ public int addVertex(Vertex newVertex) {
+ String label = newVertex.getLabel();
+ EntityGroup vg = entities.get(label);
+ if (vg == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_EXISTS;
+ }
+ if (!(vg instanceof VertexGroup)) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_MATCH;
+ }
+ VertexGroup vertexGroup = (VertexGroup) vg;
+ return vertexGroup.addVertex(newVertex);
+ }
+
+ @Override
+ public List<Edge> getEdge(String label, String src, String dst) {
+ EdgeGroup eg = (EdgeGroup) getEntity(label);
+ return eg.getEdge(src, dst);
+ }
+
+ @Override
+ public int removeEdge(Edge edge) {
+ String label = edge.getLabel();
+ EntityGroup vg = entities.get(label);
+ if (vg == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_EXISTS;
+ }
+ if (!(vg instanceof EdgeGroup)) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_MATCH;
+ }
+ EdgeGroup edgeGroup = (EdgeGroup) vg;
+ return edgeGroup.removeEdge(edge);
+ }
+
+ @Override
+ public int addEdge(Edge newEdge) {
+ String label = newEdge.getLabel();
+ EntityGroup vg = entities.get(label);
+ if (vg == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_EXISTS;
+ }
+ if (!(vg instanceof EdgeGroup)) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_NOT_MATCH;
+ }
+ EdgeGroup edgeGroup = (EdgeGroup) vg;
+ return edgeGroup.addEdge(newEdge);
+ }
+
+ @Override
+ public Iterator<Edge> scanEdge(Vertex vertex) {
+ List<Iterator<Edge>> iterators = new ArrayList<>();
+ for (EntityGroup entityGroup : this.entities.values()) {
+ if (entityGroup instanceof EdgeGroup) {
+ iterators.add(((EdgeGroup) entityGroup).getOutEdges(vertex.getId()).iterator());
+ iterators.add(((EdgeGroup) entityGroup).getInEdges(vertex.getId()).iterator());
+ }
+ }
+ return new CompositeIterator<>(iterators);
+ }
+
+ @Override
+ public Iterator<Vertex> scanVertex() {
+ List<Iterator<Vertex>> iterators = new ArrayList<>();
+ for (EntityGroup entityGroup : this.entities.values()) {
+ if (entityGroup instanceof VertexGroup) {
+ iterators.add(((VertexGroup) entityGroup).getVertices().iterator());
+ }
+ }
+ return new CompositeIterator<>(iterators);
+ }
+
+ static class CompositeIterator<T> implements Iterator<T> {
+
+ private final List<Iterator<T>> iterators;
+ private int currentIndex = 0;
+
+ public CompositeIterator(List<Iterator<T>> iterators) {
+ this.iterators = iterators;
+ }
+
+ @Override
+ public boolean hasNext() {
+ while (currentIndex < iterators.size()) {
+ if (iterators.get(currentIndex).hasNext()) {
+ return true;
+ }
+ currentIndex++;
+ }
+ return false;
+ }
+
+ @Override
+ public T next() {
+ if (!hasNext()) {
+ throw new NoSuchElementException();
+ }
+ return iterators.get(currentIndex).next();
+ }
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/ResourceFileScanner.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/ResourceFileScanner.java
new file mode 100644
index 000000000..050483e53
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/ResourceFileScanner.java
@@ -0,0 +1,65 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public class ResourceFileScanner {
+
+ public static Map<String, List<String>> scanGraphLdbcSfFolder(ClassLoader classLoader,
+ String path) {
+ Map<String, List<String>> resultMap = new HashMap<>();
+
+ try {
+ Path resourcePath = Paths.get(classLoader.getResource(path).toURI());
+
+ Files.list(resourcePath)
+ .filter(Files::isDirectory)
+ .forEach(dirPath -> {
+ String folderName = dirPath.getFileName().toString();
+ try {
+ List<String> fileNames = Files.list(dirPath)
+ .filter(Files::isRegularFile)
+ .map(filePath -> filePath.getFileName().toString())
+ .collect(Collectors.toList());
+
+ resultMap.put(folderName, fileNames);
+ } catch (IOException e) {
+ System.err.println("Fail to read: " + dirPath.toString());
+ e.printStackTrace();
+ }
+ });
+
+ } catch (IOException | URISyntaxException e) {
+ System.err.println("Fail to scan resource files.");
+ e.printStackTrace();
+ }
+
+ return resultMap;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Schema.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Schema.java
new file mode 100644
index 000000000..711cf04c3
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Schema.java
@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.List;
+
+public interface Schema {
+
+ String getName();
+
+ List<String> getFields();
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Vertex.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Vertex.java
new file mode 100644
index 000000000..72b320c0d
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/Vertex.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.List;
+import java.util.Objects;
+
+public class Vertex {
+
+ private final String id;
+ private final String label;
+ private final List<String> values;
+
+ public Vertex(String label, String id, List<String> values) {
+ this.label = label;
+ this.id = id;
+ this.values = values;
+ }
+
+ public String getId() {
+ return id;
+ }
+
+ public String getLabel() {
+ return label;
+ }
+
+ public List<String> getValues() {
+ return values;
+ }
+
+ @Override
+ public String toString() {
+ return label + " | " + id + " | " + String.join("|", values);
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ Vertex vertex = (Vertex) o;
+ return Objects.equals(id, vertex.id) && Objects.equals(label, vertex.label);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(id, label);
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/VertexGroup.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/VertexGroup.java
new file mode 100644
index 000000000..fa274417d
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/VertexGroup.java
@@ -0,0 +1,104 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.common.ErrorCode;
+
+public class VertexGroup implements EntityGroup {
+
+ public final VertexSchema vertexSchema;
+ private final List<Vertex> vertices;
+ private final Map<String, Integer> index;
+
+ public VertexGroup(VertexSchema vertexSchema, List<Vertex> vertices) {
+ this.vertexSchema = vertexSchema;
+ this.vertices = vertices;
+ this.index = new HashMap<>(vertices.size());
+ buildIndex();
+ }
+
+ private void buildIndex() {
+ int index = 0;
+ for (Vertex v : vertices) {
+ this.index.put(v.getId(), index);
+ index++;
+ }
+ }
+
+ public int addVertex(Vertex newVertex) {
+ if (newVertex == null || newVertex.getId() == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_INSERT_FAILED;
+ }
+ if (index.containsKey(newVertex.getId())) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_INSERT_FAILED;
+ }
+ this.vertices.add(newVertex);
+ this.index.put(newVertex.getId(), vertices.size() - 1);
+ return ErrorCode.SUCCESS;
+ }
+
+ public int updateVertex(Vertex newVertex) {
+ if (newVertex == null || newVertex.getId() == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_UPDATE_FAILED;
+ }
+ if (!index.containsKey(newVertex.getId())) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_UPDATE_FAILED;
+ }
+ int offset = index.get(newVertex.getId());
+ this.vertices.set(offset, newVertex);
+ return ErrorCode.SUCCESS;
+ }
+
+ public int removeVertex(String id) {
+ if (id == null) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_REMOVE_FAILED;
+ }
+ if (!index.containsKey(id)) {
+ return ErrorCode.GRAPH_ENTITY_GROUP_REMOVE_FAILED;
+ }
+ int offset = index.get(id);
+ vertices.set(offset, null);
+ index.remove(id);
+ return ErrorCode.SUCCESS;
+ }
+
+ public VertexSchema getVertexSchema() {
+ return vertexSchema;
+ }
+
+ public List<Vertex> getVertices() {
+ List<Vertex> vertices = this.vertices.stream()
+ .filter(Objects::nonNull).collect(Collectors.toList());
+ return vertices;
+ }
+
+ public Vertex getVertex(String id) {
+ if (index.get(id) != null) {
+ return vertices.get(index.get(id));
+ } else {
+ return null;
+ }
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/VertexSchema.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/VertexSchema.java
new file mode 100644
index 000000000..633e37490
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/graph/io/VertexSchema.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.graph.io;
+
+import java.util.List;
+
+public class VertexSchema implements Schema {
+
+ private final String label;
+ private final List<String> fields;
+ private final String idField;
+
+ public VertexSchema(String label, String idField, List<String> fields) {
+ this.idField = idField;
+ this.fields = fields;
+ this.label = label;
+ }
+
+ @Override
+ public List<String> getFields() {
+ return fields;
+ }
+
+ public String getLabel() {
+ return label;
+ }
+
+ public String getIdField() {
+ return idField;
+ }
+
+ @Override
+ public String getName() {
+ return label;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/EmbeddingIndexStore.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/EmbeddingIndexStore.java
new file mode 100644
index 000000000..8fae2e1f0
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/EmbeddingIndexStore.java
@@ -0,0 +1,257 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index;
+
+import com.google.gson.Gson;
+import java.io.*;
+import java.nio.charset.Charset;
+import java.util.*;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.tuple.Pair;
+import org.apache.geaflow.ai.common.config.Constants;
+import org.apache.geaflow.ai.common.model.EmbeddingService;
+import org.apache.geaflow.ai.common.model.ModelConfig;
+import org.apache.geaflow.ai.common.model.ModelUtils;
+import org.apache.geaflow.ai.graph.GraphAccessor;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.index.vector.EmbeddingVector;
+import org.apache.geaflow.ai.index.vector.IVector;
+import org.apache.geaflow.ai.verbalization.VerbalizationFunction;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class EmbeddingIndexStore implements IndexStore {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(EmbeddingIndexStore.class);
+
+ private GraphAccessor graphAccessor;
+ private VerbalizationFunction verbFunc;
+ private String indexFilePath;
+ private ModelConfig modelConfig;
+ private Map<GraphEntity, List<EmbeddingService.EmbeddingResult>> indexStoreMap;
+
+ public void initStore(GraphAccessor graphAccessor, VerbalizationFunction func,
+ String indexFilePath, ModelConfig modelInfo) {
+ this.graphAccessor = graphAccessor;
+ this.verbFunc = func;
+ this.indexFilePath = indexFilePath;
+ this.modelConfig = modelInfo;
+ this.indexStoreMap = new HashMap<>();
+
+ //Read index items from indexFilePath
+ Map<String, GraphEntity> key2EntityMap = new HashMap<>();
+ for (Iterator<GraphVertex> itV = this.graphAccessor.scanVertex(); itV.hasNext(); ) {
+ GraphVertex vertex = itV.next();
+ key2EntityMap.put(ModelUtils.getGraphEntityKey(vertex), vertex);
+ for (Iterator<GraphEdge> itE = this.graphAccessor.scanEdge(vertex); itE.hasNext(); ) {
+ GraphEdge edge = itE.next();
+ key2EntityMap.put(ModelUtils.getGraphEntityKey(edge), edge);
+ }
+ }
+ LOGGER.info("Success to scan entities. total entities num: " + key2EntityMap.size());
+
+ try {
+ File indexFile = new File(this.indexFilePath);
+
+ if (!indexFile.exists()) {
+ File parentDir = indexFile.getParentFile();
+ if (parentDir != null && !parentDir.exists()) {
+ parentDir.mkdirs();
+ }
+ indexFile.createNewFile();
+ LOGGER.info("Success to create new index store file. Path: " + this.indexFilePath);
+ }
+ } catch (Throwable e) {
+ throw new RuntimeException(e);
+ }
+
+
+ long count = 0;
+ try (BufferedReader reader = new BufferedReader(
+ new InputStreamReader(
+ new FileInputStream(this.indexFilePath),
+ Charset.defaultCharset()))) {
+ String line;
+ while ((line = reader.readLine()) != null) {
+ line = line.trim();
+ if (line.isEmpty()) {
+ continue;
+ }
+ try {
+ EmbeddingService.EmbeddingResult embedding =
+ new Gson().fromJson(line, EmbeddingService.EmbeddingResult.class);
+ String key = embedding.input;
+ GraphEntity entity = key2EntityMap.get(key);
+ if (entity != null) {
+ this.indexStoreMap.computeIfAbsent(entity, k -> new ArrayList<>()).add(embedding);
+ }
+ count++;
+ } catch (Throwable e) {
+ LOGGER.info("Cannot parse embedding item: " + line);
+ }
+ }
+ } catch (Throwable e) {
+ throw new RuntimeException(e);
+ }
+
+ LOGGER.info("Success to read index store file. items num: " + count);
+ LOGGER.info("Success to rebuild index with file. index num: " + this.indexStoreMap.size());
+
+
+ //Scan entities in the graph, make new index items
+ EmbeddingService embeddingService = new EmbeddingService();
+ embeddingService.setModelConfig(modelInfo);
+
+ final int BATCH_SIZE = Constants.EMBEDDING_INDEX_STORE_BATCH_SIZE;
+ List<GraphEntity> pendingEntities = new ArrayList<>(BATCH_SIZE);
+ Set<GraphEntity> batchEntitiesBuffer = new HashSet<>(BATCH_SIZE);
+ List<String> result = new ArrayList<>();
+ final int REPORT_SIZE = Constants.EMBEDDING_INDEX_STORE_REPORT_SIZE;
+ long reportedCount = this.indexStoreMap.size();
+ long addedCount = this.indexStoreMap.size();
+ for (Iterator<GraphVertex> itV = graphAccessor.scanVertex(); itV.hasNext(); ) {
+ GraphVertex vertex = itV.next();
+
+ // Scan vertices or edges, skip already indexed data,
+ // add un-indexed data to batch processing collection
+ if (!indexStoreMap.containsKey(vertex) && !batchEntitiesBuffer.contains(vertex)) {
+ batchEntitiesBuffer.add(vertex);
+ pendingEntities.add(vertex);
+ if (pendingEntities.size() >= BATCH_SIZE) {
+ result.addAll(indexBatch(embeddingService, pendingEntities));
+ flushBatchIndex(result, false);
+ pendingEntities.clear();
+ batchEntitiesBuffer.clear();
+ addedCount += BATCH_SIZE;
+ }
+ }
+
+ for (Iterator<GraphEdge> itE = graphAccessor.scanEdge(vertex); itE.hasNext(); ) {
+ GraphEdge edge = itE.next();
+ if (!indexStoreMap.containsKey(edge) && !batchEntitiesBuffer.contains(edge)) {
+ batchEntitiesBuffer.add(edge);
+ pendingEntities.add(edge);
+ if (pendingEntities.size() >= BATCH_SIZE) {
+ result.addAll(indexBatch(embeddingService, pendingEntities));
+ flushBatchIndex(result, false);
+ pendingEntities.clear();
+ batchEntitiesBuffer.clear();
+ addedCount += BATCH_SIZE;
+ }
+ }
+ }
+ if (addedCount - reportedCount > REPORT_SIZE) {
+ LOGGER.info("added batch index. added num: " + addedCount);
+ reportedCount = addedCount;
+ }
+ }
+ if (pendingEntities.size() > 0) {
+ result.addAll(indexBatch(embeddingService, pendingEntities));
+ flushBatchIndex(result, true);
+ addedCount += pendingEntities.size();
+ pendingEntities.clear();
+ batchEntitiesBuffer.clear();
+ }
+
+ LOGGER.info("Successfully added {} new index items. Total indexed: {}",
+ addedCount, indexStoreMap.size());
+ }
+
+ private List<String> indexBatch(EmbeddingService service, List<GraphEntity> pendingEntities) {
+ if (pendingEntities == null || service == null || pendingEntities.isEmpty()) {
+ return new ArrayList<>();
+ }
+ List<String> pendingTexts = new ArrayList<>(pendingEntities.size());
+ Map<GraphEntity, Pair<Integer, Integer>> entity2StartEndPair = new HashMap<>();
+ for (GraphEntity e : pendingEntities) {
+ Integer start = pendingTexts.size();
+ pendingTexts.addAll(ModelUtils.splitLongText(
+ Constants.EMBEDDING_INDEX_STORE_SPLIT_TEXT_CHUNK_SIZE,
+ verbFunc.verbalize(e).toArray(new String[0])));
+ Integer end = pendingTexts.size();
+ entity2StartEndPair.put(e, Pair.of(start, end));
+ }
+
+ Gson gson = new Gson();
+ int batchSize = pendingEntities.size();
+ List<String> result = new ArrayList<>();
+ List<String> pendingTextsList = new ArrayList<>(pendingTexts);
+
+ for (int i = 0; i < pendingTextsList.size(); i += batchSize) {
+ int end = Math.min(i + batchSize, pendingTextsList.size());
+ List<String> batch = pendingTextsList.subList(i, end);
+ String[] textsArray = batch.toArray(new String[0]);
+ String embeddingResultStr = service.embedding(textsArray);
+ List<String> splitResults = Arrays.asList(embeddingResultStr.trim().split("\n"));
+ result.addAll(splitResults);
+
+ }
+
+ List<String> formatResult = new ArrayList<>();
+ for (Map.Entry<GraphEntity, Pair<Integer, Integer>> entry : entity2StartEndPair.entrySet()) {
+ GraphEntity e = entry.getKey();
+ List<EmbeddingService.EmbeddingResult> embeddings = new ArrayList<>();
+ for (int i = entry.getValue().getLeft(); i < entry.getValue().getRight(); i++) {
+ if (StringUtils.isNotBlank(result.get(i))) {
+ EmbeddingService.EmbeddingResult res = gson.fromJson(result.get(i),
+ EmbeddingService.EmbeddingResult.class);
+ res.input = ModelUtils.getGraphEntityKey(e);
+ formatResult.add(gson.toJson(res));
+ embeddings.add(res);
+ }
+ }
+ indexStoreMap.put(e, embeddings);
+ }
+ return formatResult;
+ }
+
+ private void flushBatchIndex(List<String> newItemStrings, boolean force) {
+ final int WRITE_SIZE = Constants.EMBEDDING_INDEX_STORE_FLUSH_WRITE_SIZE;
+ if (force || newItemStrings.size() >= WRITE_SIZE) {
+ try (FileWriter fw = new FileWriter(this.indexFilePath, true);
+ BufferedWriter writer = new BufferedWriter(fw);
+ PrintWriter out = new PrintWriter(writer)) {
+ for (String item : newItemStrings) {
+ out.println(item);
+ }
+ LOGGER.info("Success to append " + newItemStrings.size() + " new index items to file.");
+ } catch (IOException e) {
+ throw new RuntimeException("Failed to append to index file: " + this.indexFilePath, e);
+ }
+ newItemStrings.clear();
+ }
+ }
+
+ @Override
+ public List<IVector> getEntityIndex(GraphEntity entity) {
+ if (entity != null && indexStoreMap.get(entity) != null) {
+ List<EmbeddingService.EmbeddingResult> resultList = indexStoreMap.get(entity);
+ List<IVector> result = new ArrayList<>();
+ for (EmbeddingService.EmbeddingResult res : resultList) {
+ double[] embedding = res.embedding;
+ result.add(new EmbeddingVector(embedding));
+ }
+ return result;
+ }
+ return Collections.emptyList();
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/EntityAttributeIndexStore.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/EntityAttributeIndexStore.java
new file mode 100644
index 000000000..aa9823876
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/EntityAttributeIndexStore.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.index.vector.IVector;
+import org.apache.geaflow.ai.index.vector.KeywordVector;
+import org.apache.geaflow.ai.subgraph.SubGraph;
+import org.apache.geaflow.ai.verbalization.VerbalizationFunction;
+
+public class EntityAttributeIndexStore implements IndexStore {
+
+ private VerbalizationFunction verbFunc;
+
+ public void initStore(VerbalizationFunction func) {
+ if (func != null) {
+ this.verbFunc = func;
+ }
+ }
+
+ @Override
+ public List<IVector> getEntityIndex(GraphEntity entity) {
+ if (entity instanceof GraphVertex) {
+ String verbalization = verbFunc.verbalize(new SubGraph().addVertex((GraphVertex) entity));
+ List<String> sentences = new ArrayList<>();
+ sentences.add(verbalization);
+ KeywordVector keywordVector = new KeywordVector(sentences.toArray(new String[0]));
+ List<IVector> results = new ArrayList<>();
+ results.add(keywordVector);
+ return results;
+ } else {
+ String verbalization = verbFunc.verbalize(new SubGraph().addEdge((GraphEdge) entity));
+ List<String> sentences = new ArrayList<>();
+ sentences.add(verbalization);
+ KeywordVector keywordVector = new KeywordVector(sentences.toArray(new String[0]));
+ List<IVector> results = new ArrayList<>();
+ results.add(keywordVector);
+ return results;
+ }
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/IndexStore.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/IndexStore.java
new file mode 100644
index 000000000..53d1d8e51
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/IndexStore.java
@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index;
+
+import java.util.List;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.index.vector.IVector;
+
+public interface IndexStore {
+
+ List<IVector> getEntityIndex(GraphEntity entity);
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/IndexStoreCache.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/IndexStoreCache.java
new file mode 100644
index 000000000..6401b366b
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/IndexStoreCache.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.index.vector.IVector;
+
+public class IndexStoreCache {
+
+ public static final IndexStoreCache CACHE = new IndexStoreCache();
+ public static final List<IndexStore> STORE = new ArrayList<>();
+
+ static {
+ STORE.add(new EntityAttributeIndexStore());
+ }
+
+ public List<IVector> getVertexIndex(GraphVertex graphVertex) {
+ List<IVector> results = new ArrayList<>();
+ for (IndexStore indexStore : STORE) {
+ results.addAll(indexStore.getEntityIndex(graphVertex));
+ }
+ return results;
+ }
+
+ public List<IVector> getEdgeIndex(GraphEdge graphEdge) {
+ List<IVector> results = new ArrayList<>();
+ for (IndexStore indexStore : STORE) {
+ results.addAll(indexStore.getEntityIndex(graphEdge));
+ }
+ return results;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/EmbeddingVector.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/EmbeddingVector.java
new file mode 100644
index 000000000..61cd80ee6
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/EmbeddingVector.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index.vector;
+
+import java.util.Arrays;
+import java.util.Objects;
+
+public class EmbeddingVector implements IVector {
+
+
+ private final double[] vec;
+
+ public EmbeddingVector(double[] vec) {
+ this.vec = Objects.requireNonNull(vec);
+ }
+
+ @Override
+ public double match(IVector other) {
+ // Type check: must be same implementation class
+ if (!(other instanceof EmbeddingVector)) {
+ return 0.0;
+ }
+ EmbeddingVector otherVec = (EmbeddingVector) other;
+
+ // Dimension check: vectors must have same length
+ if (this.vec.length != otherVec.vec.length) {
+ return 0.0;
+ }
+
+ double dotProduct = 0.0; // Accumulator for dot product
+ double normSquared1 = 0.0; // Accumulator for squared L2 norm of this vector
+ double normSquared2 = 0.0; // Accumulator for squared L2 norm of other vector
+
+ // Single-pass computation for dot product and squared norms
+ for (int i = 0; i < this.vec.length; i++) {
+ dotProduct += this.vec[i] * otherVec.vec[i];
+ normSquared1 += this.vec[i] * this.vec[i];
+ normSquared2 += otherVec.vec[i] * otherVec.vec[i];
+ }
+
+ // Calculate denominator (product of L2 norms)
+ double denominator = Math.sqrt(normSquared1) * Math.sqrt(normSquared2);
+
+ // Handle zero-vector case (avoid division by zero)
+ if (denominator == 0.0) {
+ return 0.0;
+ }
+
+ // Return cosine similarity: dot product divided by norms product
+ return dotProduct / denominator;
+ }
+
+ @Override
+ public VectorType getType() {
+ return VectorType.EmbeddingVector;
+ }
+
+
+ @Override
+ public String toString() {
+ return "EmbeddingVector{"
+ + "vec=" + Arrays.toString(vec)
+ + '}';
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/IVector.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/IVector.java
new file mode 100644
index 000000000..14bfdb1c1
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/IVector.java
@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index.vector;
+
+public interface IVector {
+
+ double match(IVector other);
+
+ VectorType getType();
+
+ String toString();
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/KeywordVector.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/KeywordVector.java
new file mode 100644
index 000000000..da92341b4
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/KeywordVector.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index.vector;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+public class KeywordVector implements IVector {
+
+ private final String[] vec;
+
+ public KeywordVector(String... vec) {
+ this.vec = vec;
+ }
+
+ public String[] getVec() {
+ return vec;
+ }
+
+ @Override
+ public double match(IVector other) {
+ if (!(other instanceof KeywordVector)) {
+ return 0.0;
+ }
+ KeywordVector otherKeyword = (KeywordVector) other;
+ String[] small = this.vec.length <= otherKeyword.vec.length ? this.vec : otherKeyword.vec;
+ String[] large = this.vec.length <= otherKeyword.vec.length ? otherKeyword.vec : this.vec;
+ Map<String, Long> keyword2TimesMap = new HashMap<>();
+ for (String word : small) {
+ keyword2TimesMap.put(word, keyword2TimesMap.getOrDefault(word, 0L) + 1);
+ }
+ int count = 0;
+ for (String keyword : large) {
+ if (keyword2TimesMap.containsKey(keyword)) {
+ count += keyword2TimesMap.get(keyword);
+ }
+ }
+ return count;
+ }
+
+ @Override
+ public VectorType getType() {
+ return VectorType.KeywordVector;
+ }
+
+ @Override
+ public String toString() {
+ return "KeywordVector{"
+ + "vec=" + Arrays.toString(vec)
+ + '}';
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/MagnitudeVector.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/MagnitudeVector.java
new file mode 100644
index 000000000..dfe6696dd
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/MagnitudeVector.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index.vector;
+
+public class MagnitudeVector implements IVector {
+
+ @Override
+ public double match(IVector other) {
+ return 0;
+ }
+
+ @Override
+ public VectorType getType() {
+ return VectorType.MagnitudeVector;
+ }
+
+ @Override
+ public String toString() {
+ return "MagnitudeVector{}";
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/TraversalVector.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/TraversalVector.java
new file mode 100644
index 000000000..86ef1ce4c
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/TraversalVector.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index.vector;
+
+public class TraversalVector implements IVector {
+
+ private final String[] vec;
+
+ public TraversalVector(String... vec) {
+ if (vec.length % 3 != 0) {
+ throw new RuntimeException("Traversal vector should be src-edge-dst triple");
+ }
+ this.vec = vec;
+ }
+
+ @Override
+ public double match(IVector other) {
+ return 0;
+ }
+
+ @Override
+ public VectorType getType() {
+ return VectorType.TraversalVector;
+ }
+
+ @Override
+ public String toString() {
+ StringBuilder sb = new StringBuilder("TraversalVector{vec=");
+ for (int i = 0; i < vec.length; i++) {
+ if (i > 0) {
+ sb.append(i % 3 == 0 ? "; " : "-");
+ }
+ sb.append(vec[i]);
+ if (i % 3 == 2) {
+ sb.append(">");
+ }
+ }
+ return sb.append('}').toString();
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/VectorType.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/VectorType.java
new file mode 100644
index 000000000..1f076c8e7
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/index/vector/VectorType.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.index.vector;
+
+public enum VectorType {
+ TraversalVector,
+ EmbeddingVector,
+ MagnitudeVector,
+ KeywordVector
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/EmbeddingOperator.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/EmbeddingOperator.java
new file mode 100644
index 000000000..849f53ee4
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/EmbeddingOperator.java
@@ -0,0 +1,194 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.operator;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.common.config.Constants;
+import org.apache.geaflow.ai.graph.GraphAccessor;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.index.IndexStore;
+import org.apache.geaflow.ai.index.vector.EmbeddingVector;
+import org.apache.geaflow.ai.index.vector.IVector;
+import org.apache.geaflow.ai.index.vector.VectorType;
+import org.apache.geaflow.ai.search.VectorSearch;
+import org.apache.geaflow.ai.subgraph.SubGraph;
+
+public class EmbeddingOperator implements SearchOperator {
+
+ private final GraphAccessor graphAccessor;
+ private final IndexStore indexStore;
+ private double threshold;
+ private int topN;
+
+ public EmbeddingOperator(GraphAccessor accessor, IndexStore store) {
+ this.graphAccessor = Objects.requireNonNull(accessor);
+ this.indexStore = Objects.requireNonNull(store);
+ this.threshold = Constants.EMBEDDING_OPERATE_DEFAULT_THRESHOLD;
+ this.topN = Constants.EMBEDDING_OPERATE_DEFAULT_TOPN;
+ }
+
+ @Override
+ public List<SubGraph> apply(List<SubGraph> subGraphList, VectorSearch search) {
+ List<IVector> queryEmbeddingVectors = search.getVectorMap().get(VectorType.EmbeddingVector);
+ if (queryEmbeddingVectors == null || queryEmbeddingVectors.isEmpty()) {
+ if (subGraphList == null) {
+ return new ArrayList<>();
+ }
+ return new ArrayList<>(subGraphList);
+ }
+ List<GraphEntity> globalResults = searchWithGlobalGraph(queryEmbeddingVectors);
+ if (subGraphList == null || subGraphList.isEmpty()) {
+ List<GraphVertex> startVertices = new ArrayList<>();
+ for (GraphEntity resEntity : globalResults) {
+ if (resEntity instanceof GraphVertex) {
+ startVertices.add((GraphVertex) resEntity);
+ }
+ }
+ //Apply to subgraph
+ return startVertices.stream().map(v -> {
+ SubGraph subGraph = new SubGraph();
+ subGraph.addVertex(v);
+ return subGraph;
+ }).collect(Collectors.toList());
+ } else {
+ Map<GraphEntity, List<IVector>> extendEntityIndexMap = new HashMap<>();
+ //Traverse all extension points of the subgraph and search within the extension area
+ for (SubGraph subGraph : subGraphList) {
+ List<GraphEntity> extendEntities = getSubgraphExpand(subGraph);
+ for (GraphEntity extendEntity : extendEntities) {
+ List<IVector> entityIndex = indexStore.getEntityIndex(extendEntity);
+ extendEntityIndexMap.put(extendEntity, entityIndex);
+ }
+ }
+ //recall compute
+ List<GraphEntity> matchEntities = searchEmbeddings(queryEmbeddingVectors, extendEntityIndexMap);
+ Set<GraphEntity> matchEntitiesSet = new HashSet<>(matchEntities);
+
+ //Apply to subgraph
+ List<SubGraph> subGraphs = new ArrayList<>(subGraphList);
+ for (SubGraph subGraph : subGraphs) {
+ Set<GraphEntity> subgraphEntitySet = new HashSet<>(subGraph.getGraphEntityList());
+ List<GraphEntity> extendEntities = getSubgraphExpand(subGraph);
+ for (GraphEntity extendEntity : extendEntities) {
+ if (matchEntitiesSet.contains(extendEntity)
+ && !subgraphEntitySet.contains(extendEntity)) {
+ subgraphEntitySet.add(extendEntity);
+ subGraph.addEntity(extendEntity);
+ }
+ }
+ }
+ return subGraphs;
+ }
+ }
+
+ private List<GraphEntity> getSubgraphExpand(SubGraph subGraph) {
+ List<GraphEntity> entityList = subGraph.getGraphEntityList();
+ List<GraphEntity> expandEntities = new ArrayList<>();
+ for (GraphEntity entity : entityList) {
+ List<GraphEntity> entityExpand = graphAccessor.expand(entity);
+ expandEntities.addAll(entityExpand);
+ }
+ return expandEntities;
+ }
+
+ private List<GraphEntity> searchWithGlobalGraph(List<IVector> queryEmbeddingVectors) {
+ Map<GraphEntity, List<IVector>> entityIndexMap = new HashMap<>();
+ Iterator<GraphVertex> vertexIterator = graphAccessor.scanVertex();
+ while (vertexIterator.hasNext()) {
+ GraphVertex vertex = vertexIterator.next();
+ //Read all vertices indices from the index and add them to the candidate set.
+ List<IVector> vertexIndex = indexStore.getEntityIndex(vertex);
+ entityIndexMap.put(vertex, vertexIndex);
+ }
+ //recall compute
+ return searchEmbeddings(queryEmbeddingVectors, entityIndexMap);
+ }
+
+ private List<GraphEntity> searchEmbeddings(List<IVector> queryEmbeddingVectors,
+ Map<GraphEntity, List<IVector>> entityIndexMap) {
+ // Extract valid query EmbeddingVectors from input
+ List<EmbeddingVector> queryVectors = queryEmbeddingVectors.stream()
+ .filter(EmbeddingVector.class::isInstance)
+ .map(EmbeddingVector.class::cast)
+ .collect(Collectors.toList());
+
+ // Create min-heap to maintain top N entities by maximum relevance score
+ PriorityQueue<GraphEntityScorePair> minHeap = new PriorityQueue<>(Comparator.comparingDouble(a -> a.score));
+
+ // Process each entity in the index
+ for (Map.Entry<GraphEntity, List<IVector>> entry : entityIndexMap.entrySet()) {
+ GraphEntity entity = entry.getKey();
+ // Extract valid entity embeddings
+ List<EmbeddingVector> entityVectors = entry.getValue().stream()
+ .filter(EmbeddingVector.class::isInstance)
+ .map(EmbeddingVector.class::cast)
+ .collect(Collectors.toList());
+
+ // Skip entities without valid embeddings
+ if (entityVectors.isEmpty()) {
+ continue;
+ }
+
+ // Compute maximum relevance score between query and entity embeddings
+ double maxRelevance = 0.0;
+ for (EmbeddingVector queryVector : queryVectors) {
+ for (EmbeddingVector entityVector : entityVectors) {
+ double matchScore = queryVector.match(entityVector);
+ if (matchScore > maxRelevance) {
+ maxRelevance = matchScore;
+ }
+ }
+ }
+
+ // Add to candidates if above threshold
+ if (maxRelevance > threshold) {
+ // Maintain heap size <= topN
+ if (minHeap.size() < topN) {
+ minHeap.offer(new GraphEntityScorePair(entity, maxRelevance));
+ } else {
+ assert minHeap.peek() != null;
+ if (minHeap.peek().score < maxRelevance) {
+ minHeap.poll();
+ minHeap.offer(new GraphEntityScorePair(entity, maxRelevance));
+ }
+ }
+ }
+ }
+
+ // Convert heap to sorted list (descending by score)
+ return minHeap.stream()
+ .sorted(Comparator.comparingDouble((GraphEntityScorePair p) -> p.score).reversed())
+ .map(pair -> pair.entity)
+ .collect(Collectors.toList());
+ }
+
+ // Helper class to store entity-score pairs
+ private static class GraphEntityScorePair {
+ final GraphEntity entity;
+ final double score;
+
+ GraphEntityScorePair(GraphEntity entity, double score) {
+ this.entity = entity;
+ this.score = score;
+ }
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/GraphSearchStore.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/GraphSearchStore.java
new file mode 100644
index 000000000..34cf7440b
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/GraphSearchStore.java
@@ -0,0 +1,151 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.operator;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.graph.GraphAccessor;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.graph.io.Edge;
+import org.apache.geaflow.ai.graph.io.EdgeSchema;
+import org.apache.geaflow.ai.graph.io.Vertex;
+import org.apache.geaflow.ai.graph.io.VertexSchema;
+import org.apache.geaflow.ai.index.vector.IVector;
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.index.IndexWriterConfig;
+import org.apache.lucene.search.ScoreDoc;
+import org.apache.lucene.search.TopDocs;
+import org.apache.lucene.store.Directory;
+
+public class GraphSearchStore {
+
+ private SearchStore store;
+ private long entityNum = 0L;
+
+ public GraphSearchStore() {
+ this.store = new SearchStore();
+ }
+
+ public boolean indexVertex(GraphVertex graphVertex, List<IVector> indexVectors) {
+ Map<String, String> kv = new HashMap<>();
+ Vertex vertex = graphVertex.getVertex();
+ kv.put(SearchConstants.ID, vertex.getId());
+ kv.put(SearchConstants.LABEL, vertex.getLabel());
+ List<String> contents = new ArrayList<>(indexVectors.size());
+ for (IVector v : indexVectors) {
+ contents.add(v.toString());
+ }
+ String content = String.join(SearchConstants.DELIMITER, contents);
+ kv.put(SearchConstants.CONTENT, content);
+
+ try {
+ store.addDoc(kv);
+ } catch (Throwable e) {
+ throw new RuntimeException("Cannot index vertex to search store", e);
+ }
+ addItem();
+ return true;
+ }
+
+ public boolean indexEdge(GraphEdge graphEdge, List<IVector> indexVectors) {
+ Map<String, String> kv = new HashMap<>();
+ Edge edge = graphEdge.getEdge();
+ kv.put(SearchConstants.SRC, edge.getSrcId());
+ kv.put(SearchConstants.DST, edge.getDstId());
+ kv.put(SearchConstants.LABEL, edge.getLabel());
+ List<String> contents = new ArrayList<>(indexVectors.size());
+ for (IVector v : indexVectors) {
+ contents.add(v.toString());
+ }
+ String content = String.join(SearchConstants.DELIMITER, contents);
+ kv.put(SearchConstants.CONTENT, content);
+ try {
+ store.addDoc(kv);
+ } catch (Throwable e) {
+ throw new RuntimeException("Cannot index vertex to search store", e);
+ }
+ addItem();
+ return true;
+ }
+
+ public List<GraphEntity> search(String key1, GraphAccessor graphAccessor) {
+ try {
+ String query = SearchUtils.formatQuery(key1);
+ TopDocs docs = store.searchDoc(SearchConstants.CONTENT, query);
+ ScoreDoc[] scoreDocArray = docs.scoreDocs;
+ Set<String> vertexLabels = graphAccessor.getGraphSchema().getVertexSchemaList()
+ .stream().map(VertexSchema::getLabel).collect(Collectors.toSet());
+ Set<String> edgeLabels = graphAccessor.getGraphSchema().getEdgeSchemaList()
+ .stream().map(EdgeSchema::getLabel).collect(Collectors.toSet());
+ List<GraphEntity> result = new ArrayList<>();
+ for (ScoreDoc scoreDoc : scoreDocArray) {
+ int docId = scoreDoc.doc;
+ Document document = store.getDoc(docId);
+ String label = document.get(SearchConstants.LABEL);
+ if (vertexLabels.contains(label)) {
+ String id = document.get(SearchConstants.ID);
+ GraphVertex graphVertex = graphAccessor.getVertex(label, id);
+ if (graphVertex != null) {
+ result.add(graphVertex);
+ }
+ } else if (edgeLabels.contains(label)) {
+ String src = document.get(SearchConstants.SRC);
+ String dst = document.get(SearchConstants.DST);
+ List<GraphEdge> graphEdge = graphAccessor.getEdge(label, src, dst);
+ if (graphEdge != null) {
+ result.addAll(graphEdge);
+ }
+ }
+ }
+ return result;
+ } catch (Throwable e) {
+ throw new RuntimeException("Cannot read search store", e);
+ }
+ }
+
+ private void addItem() {
+ entityNum++;
+ }
+
+ public void close() {
+ try {
+ store.close();
+ } catch (Throwable e) {
+ throw new RuntimeException("Cannot close search store", e);
+ }
+ }
+
+ public Directory getDirectory() {
+ return store.getDirectory();
+ }
+
+ public Analyzer getAnalyzer() {
+ return store.getAnalyzer();
+ }
+
+ public IndexWriterConfig getConfig() {
+ return store.getConfig();
+ }
+
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchConstants.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchConstants.java
new file mode 100644
index 000000000..6a5ae0770
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchConstants.java
@@ -0,0 +1,32 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.operator;
+
+public class SearchConstants {
+
+ public static String LABEL = "label";
+ public static String ID = "id";
+ public static String SRC = "src";
+ public static String DST = "dst";
+ public static String CONTENT = "content";
+ public static String OPERATOR = "operator";
+ public static String DELIMITER = " ";
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchOperator.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchOperator.java
new file mode 100644
index 000000000..068bfd744
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchOperator.java
@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.operator;
+
+import java.util.List;
+import org.apache.geaflow.ai.search.VectorSearch;
+import org.apache.geaflow.ai.subgraph.SubGraph;
+
+public interface SearchOperator {
+
+ List<SubGraph> apply(List<SubGraph> subGraphList, VectorSearch search);
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchStore.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchStore.java
new file mode 100644
index 000000000..81183ae47
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchStore.java
@@ -0,0 +1,118 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.operator;
+
+import java.io.IOException;
+import java.util.Map;
+import org.apache.geaflow.ai.common.config.Constants;
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.standard.StandardAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.document.TextField;
+import org.apache.lucene.index.DirectoryReader;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.index.IndexWriterConfig;
+import org.apache.lucene.queryparser.classic.ParseException;
+import org.apache.lucene.queryparser.classic.QueryParser;
+import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.TopDocs;
+import org.apache.lucene.store.ByteBuffersDirectory;
+import org.apache.lucene.store.Directory;
+
+public class SearchStore {
+
+ private final Directory directory = new ByteBuffersDirectory();
+ private final Analyzer analyzer = new StandardAnalyzer();
+ private final IndexWriterConfig config = new IndexWriterConfig(analyzer);
+ private IndexWriter writer;
+ private boolean writeStats = false;
+ private IndexReader reader;
+ private IndexSearcher searcher;
+ private boolean readStats = false;
+
+ public SearchStore() {
+ }
+
+ public void addDoc(Map<String, String> kv) throws IOException {
+ initWriter();
+ Document doc = new Document();
+ for (Map.Entry<String, String> entry : kv.entrySet()) {
+ doc.add(new TextField(entry.getKey(), entry.getValue(), Field.Store.YES));
+ }
+ writer.addDocument(doc);
+ }
+
+ public TopDocs searchDoc(String field, String content) throws ParseException, IOException {
+ if (!readStats) {
+ reader = DirectoryReader.open(directory);
+ searcher = new IndexSearcher(reader);
+ readStats = true;
+ }
+ QueryParser parser = new QueryParser(field, analyzer);
+ return searcher.search(parser.parse(content), Constants.GRAPH_SEARCH_STORE_DEFAULT_TOPN);
+ }
+
+ public Document getDoc(int docId) {
+ try {
+ if (!readStats) {
+ reader = DirectoryReader.open(directory);
+ searcher = new IndexSearcher(reader);
+ readStats = true;
+ }
+ return searcher.doc(docId);
+ } catch (Throwable e) {
+ return null;
+ }
+
+ }
+
+ public void initWriter() throws IOException {
+ if (!writeStats) {
+ writer = new IndexWriter(directory, config);
+ writeStats = true;
+ }
+ }
+
+ public void close() throws IOException {
+ if (writeStats) {
+ writer.close();
+ writeStats = false;
+ }
+ if (readStats) {
+ reader.close();
+ readStats = false;
+ }
+ }
+
+
+ public Directory getDirectory() {
+ return directory;
+ }
+
+ public Analyzer getAnalyzer() {
+ return analyzer;
+ }
+
+ public IndexWriterConfig getConfig() {
+ return config;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchUtils.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchUtils.java
new file mode 100644
index 000000000..c60d21af3
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SearchUtils.java
@@ -0,0 +1,108 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.operator;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+public class SearchUtils {
+
+ // Set of excluded characters: these will be replaced with spaces in formatQuery
+ private static final Set<Character> EXCLUDED_CHARS = new HashSet<>(Arrays.asList(
+ '*', '#', '-', '?', '`', '{', '}', '[', ']', '(', ')', '>', '<', ':', '/', '.'
+ ));
+
+ // Set of allowed characters for validation in isAllAllowedChars
+ // Includes: digits (0-9), and some common safe symbols
+ private static final Set<Character> IGNORE_CHARS = buildIgnoredChars();
+
+ /**
+ * Builds the set of allowed characters for input validation.
+ * Includes alphanumeric characters and selected common symbols.
+ *
+ * @return an unmodifiable set of ignored characters
+ */
+ private static Set<Character> buildIgnoredChars() {
+ Set<Character> ignored = new HashSet<>(32);
+ // Add digits
+ for (char c = '0'; c <= '9'; c++) {
+ ignored.add(c);
+ }
+ // Add commonly allowed symbols
+ ignored.add('.');
+ ignored.add('_');
+ ignored.add('-');
+ ignored.add('@');
+ ignored.add('+');
+ ignored.add('!');
+ ignored.add('$');
+ ignored.add('%');
+ ignored.add('&');
+ ignored.add('=');
+ ignored.add('~');
+ return Collections.unmodifiableSet(ignored);
+ }
+
+ /**
+ * Formats the input query string by replacing each excluded character with a space.
+ * This helps sanitize search queries for parsing or indexing.
+ *
+ * @param query the input string to format
+ * @return the formatted string with excluded characters replaced by spaces
+ */
+ public static String formatQuery(String query) {
+ if (query == null || query.isEmpty()) {
+ return query;
+ }
+ StringBuilder result = new StringBuilder();
+ for (char c : query.toCharArray()) {
+ if (EXCLUDED_CHARS.contains(c)) {
+ result.append(' ');
+ } else {
+ result.append(c);
+ }
+ }
+ String replacedQuery = result.toString();
+ replacedQuery = replacedQuery.replace("http", "");
+ return replacedQuery;
+ }
+
+ /**
+ * Checks whether all characters in the given string are within the allowed character set.
+ * Useful for validating usernames, identifiers, or safe input formats.
+ *
+ * @param str the string to validate
+ * @return true if all characters are allowed; false otherwise
+ */
+ public static boolean isAllAllowedChars(String str) {
+ if (str == null || str.isEmpty()) {
+ return false; // Consider empty/null invalid; adjust based on use case
+ }
+ for (char c : str.toCharArray()) {
+ if (IGNORE_CHARS.contains(c)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SessionOperator.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SessionOperator.java
new file mode 100644
index 000000000..4800c9341
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/operator/SessionOperator.java
@@ -0,0 +1,143 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.operator;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.graph.GraphAccessor;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.index.IndexStore;
+import org.apache.geaflow.ai.index.vector.IVector;
+import org.apache.geaflow.ai.index.vector.VectorType;
+import org.apache.geaflow.ai.search.VectorSearch;
+import org.apache.geaflow.ai.subgraph.SubGraph;
+
+public class SessionOperator implements SearchOperator {
+
+ private final GraphAccessor graphAccessor;
+ private final IndexStore indexStore;
+
+ public SessionOperator(GraphAccessor accessor, IndexStore store) {
+ this.graphAccessor = Objects.requireNonNull(accessor);
+ this.indexStore = Objects.requireNonNull(store);
+ }
+
+ @Override
+ public List<SubGraph> apply(List<SubGraph> subGraphList, VectorSearch search) {
+ List<IVector> keyWordVectors = search.getVectorMap().get(VectorType.KeywordVector);
+ if (keyWordVectors == null || keyWordVectors.isEmpty()) {
+ if (subGraphList == null) {
+ return new ArrayList<>();
+ }
+ return new ArrayList<>(subGraphList);
+ }
+ List<String> contents = new ArrayList<>(keyWordVectors.size());
+ for (IVector v : keyWordVectors) {
+ contents.add(v.toString());
+ }
+ String query = String.join(SearchConstants.DELIMITER, contents);
+ List<GraphEntity> globalResults = searchWithGlobalGraph(query);
+ if (subGraphList == null || subGraphList.isEmpty()) {
+ List<GraphVertex> startVertices = new ArrayList<>();
+ for (GraphEntity resEntity : globalResults) {
+ if (resEntity instanceof GraphVertex) {
+ startVertices.add((GraphVertex) resEntity);
+ }
+ }
+ //Apply to subgraph
+ return startVertices.stream().map(v -> {
+ SubGraph subGraph = new SubGraph();
+ subGraph.addVertex(v);
+ return subGraph;
+ }).collect(Collectors.toList());
+ } else {
+ Map<GraphEntity, List<IVector>> extendEntityIndexMap = new HashMap<>();
+ //Traverse all extension points of the subgraph and search within the extension area
+ for (SubGraph subGraph : subGraphList) {
+ List<GraphEntity> extendEntities = getSubgraphExpand(subGraph);
+ for (GraphEntity extendEntity : extendEntities) {
+ List<IVector> entityIndex = indexStore.getEntityIndex(extendEntity);
+ extendEntityIndexMap.put(extendEntity, entityIndex);
+ }
+ }
+ //recall compute
+ GraphSearchStore searchStore = initSearchStore(extendEntityIndexMap);
+ searchStore.close();
+ List<GraphEntity> matchEntities = searchStore.search(query, graphAccessor);
+ Set<GraphEntity> matchEntitiesSet = new HashSet<>(matchEntities);
+
+ //Apply to subgraph
+ List<SubGraph> subGraphs = new ArrayList<>(subGraphList);
+ for (SubGraph subGraph : subGraphs) {
+ Set<GraphEntity> subgraphEntitySet = new HashSet<>(subGraph.getGraphEntityList());
+ List<GraphEntity> extendEntities = getSubgraphExpand(subGraph);
+ for (GraphEntity extendEntity : extendEntities) {
+ if (matchEntitiesSet.contains(extendEntity)
+ && !subgraphEntitySet.contains(extendEntity)) {
+ subgraphEntitySet.add(extendEntity);
+ subGraph.addEntity(extendEntity);
+ }
+ }
+ }
+ return subGraphs;
+ }
+ }
+
+ private List<GraphEntity> getSubgraphExpand(SubGraph subGraph) {
+ List<GraphEntity> entityList = subGraph.getGraphEntityList();
+ List<GraphEntity> expandEntities = new ArrayList<>();
+ for (GraphEntity entity : entityList) {
+ List<GraphEntity> entityExpand = graphAccessor.expand(entity);
+ expandEntities.addAll(entityExpand);
+ }
+ return expandEntities;
+ }
+
+ private List<GraphEntity> searchWithGlobalGraph(String query) {
+ Map<GraphEntity, List<IVector>> entityIndexMap = new HashMap<>();
+ Iterator<GraphVertex> vertexIterator = graphAccessor.scanVertex();
+ while (vertexIterator.hasNext()) {
+ GraphVertex vertex = vertexIterator.next();
+ //Read all vertices indices from the index and add them to the candidate set.
+ List<IVector> vertexIndex = indexStore.getEntityIndex(vertex);
+ entityIndexMap.put(vertex, vertexIndex);
+ }
+ //recall compute
+ GraphSearchStore searchStore = initSearchStore(entityIndexMap);
+ searchStore.close();
+ return searchStore.search(query, graphAccessor);
+ }
+
+ private GraphSearchStore initSearchStore(Map<GraphEntity, List<IVector>> entityIndexMap) {
+ GraphSearchStore searchStore = new GraphSearchStore();
+ for (Map.Entry<GraphEntity, List<IVector>> entry : entityIndexMap.entrySet()) {
+ if (entry.getValue() != null && !entry.getValue().isEmpty()) {
+ if (entry.getKey() instanceof GraphVertex) {
+ searchStore.indexVertex((GraphVertex) entry.getKey(), entry.getValue());
+ } else if (entry.getKey() instanceof GraphEdge) {
+ searchStore.indexEdge((GraphEdge) entry.getKey(), entry.getValue());
+ }
+ }
+ }
+ return searchStore;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/search/VectorSearch.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/search/VectorSearch.java
new file mode 100644
index 000000000..98db3a34d
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/search/VectorSearch.java
@@ -0,0 +1,75 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.search;
+
+import java.util.*;
+import org.apache.geaflow.ai.index.vector.IVector;
+import org.apache.geaflow.ai.index.vector.VectorType;
+
+public class VectorSearch {
+
+ public final String memoryId;
+
+ public final String sessionId;
+
+ public final Map<VectorType, List<IVector>> vectorList = new LinkedHashMap<>();
+
+ public VectorSearch(String memoryId, String sessionId) {
+ this.memoryId = memoryId;
+ this.sessionId = sessionId;
+ }
+
+ public void addVector(IVector vector) {
+ addVector(Collections.singletonList(vector));
+ }
+
+ public void addVector(List<IVector> vectors) {
+ if (vectors == null) {
+ return;
+ }
+ for (IVector v : vectors) {
+ if (v != null) {
+ vectorList.computeIfAbsent(v.getType(),
+ k -> new ArrayList<>()).add(v);
+ }
+ }
+ }
+
+ @Override
+ public String toString() {
+ return "VectorSearch{"
+ + "memoryId='" + memoryId + '\''
+ + ", sessionId='" + sessionId + '\''
+ + ", vectorList=" + vectorList
+ + '}';
+ }
+
+ public String getMemoryId() {
+ return memoryId;
+ }
+
+ public String getSessionId() {
+ return sessionId;
+ }
+
+ public Map<VectorType, List<IVector>> getVectorMap() {
+ return vectorList;
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/session/SessionManagement.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/session/SessionManagement.java
new file mode 100644
index 000000000..5c4b4a350
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/session/SessionManagement.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.session;
+
+import java.util.*;
+import org.apache.geaflow.ai.common.config.Constants;
+import org.apache.geaflow.ai.subgraph.SubGraph;
+
+public class SessionManagement {
+
+ public static final SessionManagement INSTANCE = new SessionManagement();
+ private final Map<String, Long> session2ActiveTime = new HashMap<>();
+ private final Map<String, List<SubGraph>> session2Graphs = new HashMap<>();
+
+ private SessionManagement() {
+ }
+
+ public boolean createSession(String sessionId) {
+ if (session2ActiveTime.containsKey(sessionId)) {
+ return false;
+ }
+ session2ActiveTime.put(sessionId, System.nanoTime());
+ session2Graphs.putIfAbsent(sessionId, new ArrayList<>());
+ return true;
+ }
+
+ public String createSession() {
+ String sessionId = Constants.PREFIX_TMP_SESSION + System.nanoTime()
+ + UUID.randomUUID().toString().replace("-", "").substring(0, 8);
+ return createSession(sessionId) ? sessionId : null;
+ }
+
+ public boolean sessionExists(String session) {
+ return this.session2ActiveTime.containsKey(session);
+ }
+
+ public List<SubGraph> getSubGraph(String sessionId) {
+ List<SubGraph> l = this.session2Graphs.get(sessionId);
+ return l == null ? new ArrayList<>() : l;
+ }
+
+ public void setSubGraph(String sessionId, List<SubGraph> subGraphs) {
+ this.session2Graphs.put(sessionId, subGraphs);
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/subgraph/SubGraph.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/subgraph/SubGraph.java
new file mode 100644
index 000000000..6648a6aca
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/subgraph/SubGraph.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.subgraph;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.graph.GraphVertex;
+
+public class SubGraph {
+
+ private final List<GraphEntity> graphEntityList = new ArrayList<>();
+
+ public SubGraph addVertex(GraphVertex vertex) {
+ graphEntityList.add(vertex);
+ return this;
+ }
+
+ public SubGraph addEdge(GraphEdge edge) {
+ graphEntityList.add(edge);
+ return this;
+ }
+
+ public SubGraph addEntity(GraphEntity e) {
+ graphEntityList.add(e);
+ return this;
+ }
+
+ public List<GraphEntity> getGraphEntityList() {
+ return graphEntityList;
+ }
+
+ @Override
+ public String toString() {
+ return "SubGraph{"
+ + "graphEntityList=" + graphEntityList
+ + '}';
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/Context.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/Context.java
new file mode 100644
index 000000000..62a449831
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/Context.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.verbalization;
+
+public class Context {
+
+ private final String prompt;
+
+ public Context(String prompt) {
+ this.prompt = prompt;
+ }
+
+ @Override
+ public String toString() {
+ return "Context{"
+ + "prompt='" + prompt + '\''
+ + '}';
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/PromptFormatter.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/PromptFormatter.java
new file mode 100644
index 000000000..85f824dea
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/PromptFormatter.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.verbalization;
+
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.graph.io.GraphSchema;
+
+public interface PromptFormatter {
+
+ String prompt(GraphSchema graphSchema);
+
+ String prompt(GraphVertex entity);
+
+ String prompt(GraphEdge entity, GraphVertex start, GraphVertex end);
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/SubgraphSemanticPromptFunction.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/SubgraphSemanticPromptFunction.java
new file mode 100644
index 000000000..2aca60c0b
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/SubgraphSemanticPromptFunction.java
@@ -0,0 +1,90 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.verbalization;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.graph.GraphAccessor;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.graph.io.GraphSchema;
+import org.apache.geaflow.ai.operator.SearchConstants;
+import org.apache.geaflow.ai.operator.SearchUtils;
+import org.apache.geaflow.ai.subgraph.SubGraph;
+
+public class SubgraphSemanticPromptFunction implements VerbalizationFunction {
+
+ private final GraphAccessor graphAccessor;
+
+ public SubgraphSemanticPromptFunction(GraphAccessor accessor) {
+ this.graphAccessor = Objects.requireNonNull(accessor);
+ }
+
+ @Override
+ public String verbalize(SubGraph subGraph) {
+ if (subGraph == null || subGraph.getGraphEntityList().isEmpty()) {
+ return "Empty.";
+ }
+ List<String> sentences = new ArrayList<>();
+ GraphSchema schema = graphAccessor.getGraphSchema();
+ Set<GraphEntity> existsEntities = new HashSet<>();
+ for (GraphEntity entity : subGraph.getGraphEntityList()) {
+ if (entity instanceof GraphVertex) {
+ GraphVertex graphVertex = (GraphVertex) entity;
+ if (!existsEntities.contains(graphVertex)) {
+ sentences.add(schema.getPrompt(graphVertex));
+ existsEntities.add(graphVertex);
+ }
+ } else if (entity instanceof GraphEdge) {
+ GraphEdge graphEdge = (GraphEdge) entity;
+ GraphVertex start = graphAccessor.getVertex(null, graphEdge.getEdge().getSrcId());
+ GraphVertex end = graphAccessor.getVertex(null, graphEdge.getEdge().getDstId());
+ sentences.add(schema.getPrompt(graphEdge,
+ existsEntities.contains(start) ? null : start,
+ existsEntities.contains(end) ? null : end));
+ existsEntities.add(start);
+ existsEntities.add(end);
+ }
+ }
+ return String.join(SearchConstants.DELIMITER, sentences);
+ }
+
+ @Override
+ public List<String> verbalize(GraphEntity entity) {
+ if (entity instanceof GraphVertex) {
+ GraphVertex graphVertex = (GraphVertex) entity;
+ return graphVertex.getVertex().getValues().stream()
+ .filter(SearchUtils::isAllAllowedChars)
+ .map(SearchUtils::formatQuery).collect(Collectors.toList());
+ } else if (entity instanceof GraphEdge) {
+ GraphEdge graphEdge = (GraphEdge) entity;
+ return graphEdge.getEdge().getValues().stream()
+ .filter(SearchUtils::isAllAllowedChars)
+ .map(SearchUtils::formatQuery).collect(Collectors.toList());
+ }
+ return new ArrayList<>();
+ }
+
+ @Override
+ public String verbalizeGraphSchema() {
+ return "";
+ }
+}
diff --git a/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/VerbalizationFunction.java b/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/VerbalizationFunction.java
new file mode 100644
index 000000000..6e90bc17a
--- /dev/null
+++ b/geaflow-ai/src/main/java/org/apache/geaflow/ai/verbalization/VerbalizationFunction.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai.verbalization;
+
+import java.util.List;
+import org.apache.geaflow.ai.graph.GraphEntity;
+import org.apache.geaflow.ai.subgraph.SubGraph;
+
+public interface VerbalizationFunction {
+
+ String verbalize(SubGraph subGraph);
+
+ List<String> verbalize(GraphEntity entity);
+
+ String verbalizeGraphSchema();
+}
diff --git a/geaflow-ai/src/main/resources/log4j.properties b/geaflow-ai/src/main/resources/log4j.properties
new file mode 100644
index 000000000..74d3697fd
--- /dev/null
+++ b/geaflow-ai/src/main/resources/log4j.properties
@@ -0,0 +1,26 @@
+################################################################################
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+################################################################################
+
+# This affects logging for both user code and framework.
+log4j.rootLogger=INFO, console
+
+# console output
+log4j.appender.console=org.apache.log4j.ConsoleAppender
+log4j.appender.console.Target=System.out
+log4j.appender.console.layout=org.apache.log4j.PatternLayout
+log4j.appender.console.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
diff --git a/geaflow-ai/src/test/java/org/apache/geaflow/ai/GraphMemoryTest.java b/geaflow-ai/src/test/java/org/apache/geaflow/ai/GraphMemoryTest.java
new file mode 100644
index 000000000..6216cb344
--- /dev/null
+++ b/geaflow-ai/src/test/java/org/apache/geaflow/ai/GraphMemoryTest.java
@@ -0,0 +1,196 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai;
+
+import org.apache.geaflow.ai.common.model.ModelConfig;
+import org.apache.geaflow.ai.graph.EmptyGraphAccessor;
+import org.apache.geaflow.ai.graph.GraphAccessor;
+import org.apache.geaflow.ai.graph.LocalMemoryGraphAccessor;
+import org.apache.geaflow.ai.index.EmbeddingIndexStore;
+import org.apache.geaflow.ai.index.EntityAttributeIndexStore;
+import org.apache.geaflow.ai.index.IndexStore;
+import org.apache.geaflow.ai.index.vector.EmbeddingVector;
+import org.apache.geaflow.ai.index.vector.KeywordVector;
+import org.apache.geaflow.ai.index.vector.MagnitudeVector;
+import org.apache.geaflow.ai.index.vector.TraversalVector;
+import org.apache.geaflow.ai.search.VectorSearch;
+import org.apache.geaflow.ai.verbalization.Context;
+import org.apache.geaflow.ai.verbalization.SubgraphSemanticPromptFunction;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class GraphMemoryTest {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(GraphMemoryTest.class);
+
+ @Test
+ public void testVectorSearch() {
+ VectorSearch search = new VectorSearch(null, "test01");
+ search.addVector(new EmbeddingVector(new double[0]));
+ search.addVector(new KeywordVector("test1", "test2"));
+ search.addVector(new MagnitudeVector());
+ search.addVector(new TraversalVector("src", "edge", "dst"));
+ LOGGER.info(String.valueOf(search));
+ }
+
+ @Test
+ public void testEmptyMainPipeline() {
+ GraphMemoryServer server = new GraphMemoryServer();
+ IndexStore indexStore = new EntityAttributeIndexStore();
+ GraphAccessor graphAccessor = new EmptyGraphAccessor();
+ server.addGraphAccessor(graphAccessor);
+ server.addIndexStore(indexStore);
+
+ String sessionId = server.createSession();
+ VectorSearch search = new VectorSearch(null, sessionId);
+ String context = produceCycle(server, search, graphAccessor);
+ Assertions.assertEquals(context, "Context{prompt=''}");
+
+ context = produceCycle(server, search, graphAccessor);
+ Assertions.assertEquals(context, "Context{prompt=''}");
+
+ context = produceCycle(server, search, graphAccessor);
+ Assertions.assertEquals(context, "Context{prompt=''}");
+ }
+
+ private String produceCycle(GraphMemoryServer server, VectorSearch search,
+ GraphAccessor graphAccessor) {
+ String sessionId = search.getSessionId();
+ String searchResult = server.search(search);
+ Assertions.assertNotNull(searchResult);
+ Context context = server.verbalize(sessionId,
+ new SubgraphSemanticPromptFunction(graphAccessor));
+ Assertions.assertNotNull(context);
+ return context.toString();
+ }
+
+ @Test
+ public void testLdbcMainPipeline() {
+ LdbcPromptFormatter ldbcPromptFormatter = new LdbcPromptFormatter();
+ LocalMemoryGraphAccessor graphAccessor =
+ new LocalMemoryGraphAccessor(this.getClass().getClassLoader(),
+ "graph_ldbc_sf", 7500L,
+ ldbcPromptFormatter::vertexMapper, ldbcPromptFormatter::edgeMapper);
+ graphAccessor.getGraphSchema().setPromptFormatter(ldbcPromptFormatter);
+ LOGGER.info("Success to init graph data.");
+
+ EntityAttributeIndexStore indexStore = new EntityAttributeIndexStore();
+ indexStore.initStore(new SubgraphSemanticPromptFunction(graphAccessor));
+ LOGGER.info("Success to init EntityAttributeIndexStore.");
+
+ ModelConfig modelInfo = new ModelConfig(null, null, null, null);
+ EmbeddingIndexStore embeddingStore = new EmbeddingIndexStore();
+ embeddingStore.initStore(graphAccessor,
+ new SubgraphSemanticPromptFunction(graphAccessor),
+ "src/test/resources/index/LDBCEmbeddingIndexStore",
+ modelInfo);
+ LOGGER.info("Success to init EmbeddingIndexStore.");
+
+ GraphMemoryServer server = new GraphMemoryServer();
+ server.addGraphAccessor(graphAccessor);
+ server.addIndexStore(indexStore);
+ server.addIndexStore(embeddingStore);
+ MockChatRobot robot = new MockChatRobot();
+ robot.setModelInfo(modelInfo);
+
+ {
+ String sessionId = server.createSession();
+ VectorSearch search = new VectorSearch(null, sessionId);
+ String query = "What comments has Chaim Azriel posted?";
+ search.addVector(new KeywordVector(query));
+ search.addVector(new EmbeddingVector(robot.embeddingSingle(query).embedding));
+ LOGGER.info("Round 1: \n" + search);
+
+ String context = produceCycle(server, search, graphAccessor);
+ LOGGER.info("Round 1: \n" + context);
+ Assertions.assertTrue(context.contains("A Person, male, register at 2010-02-19T12:42:14.255+00:00, id is Person166, name is Chaim Azriel Hleb, birthday is 1985-10-01, ip is 178.238.2.172, use browser is Firefox, use language are ru;pl;en, email address is Chaim.Azriel166@yahoo.com;Chaim.Azriel166@gmail.com;Chaim.Azriel166@gmx.com;Chaim.Azriel166@hotmail.com;Chaim.Azriel166@theblackmarket.com"));
+ Assertions.assertTrue(context.contains("A Person, male, register at 2011-09-18T02:40:31.062+00:00, id is Person21990232556059, name is Chaim Azriel Epstein, birthday is 1981-07-17, ip is 80.94.167.126, use browser is Firefox, use language are ru;pl;en, email address is Chaim.Azriel21990232556059@gmx.com;Chaim.Azriel21990232556059@gmail.com;Chaim.Azriel21990232556059@hotmail.com;Chaim.Azriel21990232556059@yahoo.com;Chaim.Azriel21990232556059@zoho.com"));
+
+ search = new VectorSearch(null, sessionId);
+ query = "Chaim Azriel, Comment_hasCreator_Person, personId, comment author, Person166, Person21990232556059";
+ search.addVector(new KeywordVector(query));
+ search.addVector(new EmbeddingVector(robot.embeddingSingle(query).embedding));
+ LOGGER.info("Round 2: \n" + search);
+
+ context = produceCycle(server, search, graphAccessor);
+ LOGGER.info("Round 2: \n" + context);
+ Assertions.assertTrue(context.contains("Comment824633737550"));
+ Assertions.assertTrue(context.contains("Comment962072691263"));
+ Assertions.assertTrue(context.contains("Comment687194784946"));
+ }
+
+ {
+ String sessionId = server.createSession();
+ VectorSearch search = new VectorSearch(null, sessionId);
+ String query = "How many posts has Chaim Azriel posted?";
+ search.addVector(new KeywordVector(query));
+ search.addVector(new EmbeddingVector(robot.embeddingSingle(query).embedding));
+
+ LOGGER.info("Round 1: \n" + search);
+
+ String context = produceCycle(server, search, graphAccessor);
+ LOGGER.info("Round 1: \n" + context);
+ Assertions.assertTrue(context.contains("A Forum, name is Wall of Chaim Azriel Hleb, id is Forum220, created at 2010-02-19T12:42:24.255+00:00"));
+ Assertions.assertTrue(context.contains("A Person, male, register at 2010-02-19T12:42:14.255+00:00, id is Person166, name is Chaim Azriel Hleb, birthday is 1985-10-01, ip is 178.238.2.172, use browser is Firefox, use language are ru;pl;en, email address is Chaim.Azriel166@yahoo.com;Chaim.Azriel166@gmail.com;Chaim.Azriel166@gmx.com;Chaim.Azriel166@hotmail.com;Chaim.Azriel166@theblackmarket.com"));
+ Assertions.assertTrue(context.contains("A Person, male, register at 2011-09-18T02:40:31.062+00:00, id is Person21990232556059, name is Chaim Azriel Epstein, birthday is 1981-07-17, ip is 80.94.167.126, use browser is Firefox, use language are ru;pl;en, email address is Chaim.Azriel21990232556059@gmx.com;Chaim.Azriel21990232556059@gmail.com;Chaim.Azriel21990232556059@hotmail.com;Chaim.Azriel21990232556059@yahoo.com;Chaim.Azriel21990232556059@zoho.com"));
+
+ search = new VectorSearch(null, sessionId);
+ query = "Chaim Azriel, Post_hasCreator_Person, Post";
+ search.addVector(new KeywordVector(query));
+ search.addVector(new EmbeddingVector(robot.embeddingSingle(query).embedding));
+ LOGGER.info("Round 2: \n" + search);
+
+ context = produceCycle(server, search, graphAccessor);
+ LOGGER.info("Round 2: \n" + context);
+ Assertions.assertTrue(context.contains("Post755914247530"));
+ Assertions.assertTrue(context.contains("Post1099511644342"));
+ Assertions.assertTrue(context.contains("Person166"));
+ }
+
+ {
+ String sessionId = server.createSession();
+ VectorSearch search = new VectorSearch(null, sessionId);
+ String query = "Which historical comments exist, who posted them, and how many have been published?";
+ search.addVector(new KeywordVector(query));
+ search.addVector(new EmbeddingVector(robot.embeddingSingle(query).embedding));
+
+ LOGGER.info("Round 1: \n" + search);
+
+ String context = produceCycle(server, search, graphAccessor);
+ LOGGER.info("Round 1: \n" + context);
+ Assertions.assertTrue(context.contains("Comment1099511634167"));
+ Assertions.assertTrue(context.contains("Comment1030792164752"));
+ Assertions.assertTrue(context.contains("Comment1099511645848"));
+
+ search = new VectorSearch(null, sessionId);
+ query = "Comment_hasCreator_Person, Person, Comment IDs, Comment1030792157359";
+ search.addVector(new KeywordVector(query));
+ search.addVector(new EmbeddingVector(robot.embeddingSingle(query).embedding));
+ LOGGER.info("Round 2: \n" + search);
+
+ context = produceCycle(server, search, graphAccessor);
+ LOGGER.info("Round 2: \n" + context);
+ Assertions.assertTrue(context.contains("Person24189255812253"));
+ Assertions.assertTrue(context.contains("Person26388279067480"));
+ }
+ }
+}
diff --git a/geaflow-ai/src/test/java/org/apache/geaflow/ai/LdbcPromptFormatter.java b/geaflow-ai/src/test/java/org/apache/geaflow/ai/LdbcPromptFormatter.java
new file mode 100644
index 000000000..f0560a547
--- /dev/null
+++ b/geaflow-ai/src/test/java/org/apache/geaflow/ai/LdbcPromptFormatter.java
@@ -0,0 +1,315 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai;
+
+import java.util.stream.Collectors;
+import org.apache.geaflow.ai.graph.GraphEdge;
+import org.apache.geaflow.ai.graph.GraphVertex;
+import org.apache.geaflow.ai.graph.io.*;
+import org.apache.geaflow.ai.verbalization.PromptFormatter;
+
+public class LdbcPromptFormatter implements PromptFormatter {
+
+ public Vertex vertexMapper(Vertex v) {
+ String idPrefix = v.getLabel();
+ return new Vertex(v.getLabel(), idPrefix + v.getId(), v.getValues());
+ }
+
+ public Edge edgeMapper(Edge e) {
+ String srcPrefix = "";
+ String dstPrefix = "";
+ switch (e.getLabel()) {
+ case "Forum_hasMember_Person":
+ case "Forum_hasModerator_Person":
+ srcPrefix = "Forum";
+ dstPrefix = "Person";
+ break;
+ case "Person_knows_Person":
+ srcPrefix = "Person";
+ dstPrefix = "Person";
+ break;
+ case "Comment_replyOf_Post":
+ srcPrefix = "Comment";
+ dstPrefix = "Post";
+ break;
+ case "Person_isLocatedIn_City":
+ srcPrefix = "Person";
+ dstPrefix = "Place";
+ break;
+ case "Comment_hasTag_Tag":
+ srcPrefix = "Comment";
+ dstPrefix = "Tag";
+ break;
+ case "Person_workAt_Company":
+ srcPrefix = "Person";
+ dstPrefix = "Company";
+ break;
+ case "Comment_replyOf_Comment":
+ srcPrefix = "Comment";
+ dstPrefix = "Comment";
+ break;
+ case "Organisation_isLocatedIn_Place":
+ srcPrefix = "Organisation";
+ dstPrefix = "Place";
+ break;
+ case "Comment_isLocatedIn_Country":
+ srcPrefix = "Comment";
+ dstPrefix = "Country";
+ break;
+ case "Person_hasInterest_Tag":
+ srcPrefix = "Person";
+ dstPrefix = "Tag";
+ break;
+ case "Forum_hasTag_Tag":
+ srcPrefix = "Forum";
+ dstPrefix = "Tag";
+ break;
+ case "Person_studyAt_University":
+ srcPrefix = "Person";
+ dstPrefix = "Organisation";
+ break;
+ case "Comment_hasCreator_Person":
+ srcPrefix = "Comment";
+ dstPrefix = "Person";
+ break;
+ case "TagClass_isSubclassOf_TagClass":
+ srcPrefix = "TagClass";
+ dstPrefix = "TagClass";
+ break;
+ case "Post_isLocatedIn_Country":
+ srcPrefix = "Post";
+ dstPrefix = "Country";
+ break;
+ case "Post_hasCreator_Person":
+ srcPrefix = "Post";
+ dstPrefix = "Person";
+ break;
+ case "Post_hasTag_Tag":
+ srcPrefix = "Post";
+ dstPrefix = "Tag";
+ break;
+ case "Person_likes_Post":
+ srcPrefix = "Person";
+ dstPrefix = "Post";
+ break;
+ case "Person_likes_Comment":
+ srcPrefix = "Person";
+ dstPrefix = "Comment";
+ break;
+ case "Forum_containerOf_Post":
+ srcPrefix = "Forum";
+ dstPrefix = "Post";
+ break;
+ case "Tag_hasType_TagClass":
+ srcPrefix = "Tag";
+ dstPrefix = "TagClass";
+ break;
+ case "Place_isPartOf_Place":
+ srcPrefix = "Place";
+ dstPrefix = "Place";
+ break;
+ default:
+ srcPrefix = "";
+ dstPrefix = "";
+ break;
+ }
+ return new Edge(e.getLabel(), srcPrefix + e.getSrcId(),
+ dstPrefix + e.getDstId(), e.getValues());
+ }
+
+ @Override
+ public String prompt(GraphSchema graphSchema) {
+ return "allVerticesType:[" + graphSchema.getVertexSchemaList()
+ .stream().map(VertexSchema::getLabel).collect(Collectors.joining(",")) + "]\n"
+ + "allRelations:[" + graphSchema.getEdgeSchemaList()
+ .stream().map(EdgeSchema::getLabel).collect(Collectors.joining(",")) + "]\n";
+ }
+
+ @Override
+ public String prompt(GraphVertex entity) {
+ if (entity == null) {
+ return "Empty Vertex.";
+ } else if (entity.getVertex() == null) {
+ return "The Vertex.";
+ }
+ Vertex obj;
+ Edge edge;
+ switch (entity.getLabel()) {
+ case "Person":
+ obj = ((GraphVertex) entity).getVertex();
+ return String.format("A Person, %s, register at %s, id is %s, name is %s %s, birthday is %s, "
+ + "ip is %s, use browser is %s, use language are %s, email address is %s",
+ obj.getValues().get(4), obj.getValues().get(0), obj.getId(),
+ obj.getValues().get(2), obj.getValues().get(3), obj.getValues().get(5),
+ obj.getValues().get(6), obj.getValues().get(7), obj.getValues().get(8), obj.getValues().get(9));
+ case "Forum":
+ obj = ((GraphVertex) entity).getVertex();
+ return String.format("A Forum, name is %s, id is %s, created at %s",
+ obj.getValues().get(2), obj.getId(), obj.getValues().get(0));
+ case "TagClass":
+ obj = ((GraphVertex) entity).getVertex();
+ return String.format("A TagClass, name is %s, id is %s, url %s",
+ obj.getValues().get(1), obj.getId(), obj.getValues().get(2));
+ case "Tag":
+ obj = ((GraphVertex) entity).getVertex();
+ return String.format("A tag, name is %s, id is %s, url %s",
+ obj.getValues().get(1), obj.getId(), obj.getValues().get(2));
+ case "Comment":
+ obj = ((GraphVertex) entity).getVertex();
+ return String.format("A comment, id is %s, created at %s, user ip is %s, "
+ + "user use browser is %s, content is %s",
+ obj.getId(), obj.getValues().get(0), obj.getValues().get(2), obj.getValues().get(3), obj.getValues().get(4));
+ case "Post":
+ obj = ((GraphVertex) entity).getVertex();
+ return String.format("A post, id is %s, created at %s, user ip is %s, "
+ + "user use browser is %s, use language is %s, content is %s",
+ obj.getId(), obj.getValues().get(0), obj.getValues().get(3), obj.getValues().get(4), obj.getValues().get(5), obj.getValues().get(6));
+ case "Organisation":
+ obj = ((GraphVertex) entity).getVertex();
+ return String.format("An organisation of %s, name is %s, id is %s, url %s",
+ obj.getValues().get(1), obj.getValues().get(2), obj.getId(), obj.getValues().get(3));
+ case "Place":
+ obj = ((GraphVertex) entity).getVertex();
+ return String.format("A place of %s, name is %s, id is %s, url %s",
+ obj.getValues().get(3), obj.getValues().get(1), obj.getId(), obj.getValues().get(2));
+ default:
+ return entity.toString();
+ }
+ }
+
+ @Override
+ public String prompt(GraphEdge entity, GraphVertex start, GraphVertex end) {
+ if (entity == null) {
+ return "Empty Edge.";
+ } else if (entity.getEdge() == null) {
+ return "The Edge.";
+ }
+ StringBuilder builder = new StringBuilder();
+ builder.append(promptEdge(entity));
+ builder.append("\n startVertex:");
+ builder.append(prompt(start));
+ builder.append("\n endVertex:");
+ builder.append(prompt(end));
+ return builder.toString();
+ }
+
+ public String promptEdge(GraphEdge entity) {
+ if (entity == null || entity.getEdge() == null) {
+ return "Empty Edge.";
+ }
+ Edge edge;
+ switch (entity.getLabel()) {
+ case "Forum_hasMember_Person":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Forum_hasMember_Person, Forum id %s has member id %s, register at %s",
+ edge.getSrcId(), edge.getDstId(), edge.getValues().get(0));
+ case "Person_workAt_Company":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Person_workAt_Company, Person id %s work at company id %s, start from %s year",
+ edge.getSrcId(), edge.getDstId(), edge.getValues().get(3));
+ case "Organisation_isLocatedIn_Place":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Organisation_isLocatedIn_Place, Organisation id %s is located in place id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Person_hasInterest_Tag":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Person_hasInterest_Tag, Person id %s interest at tag id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Forum_hasTag_Tag":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Forum_hasTag_Tag, Forum id %s has tag id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Forum_hasModerator_Person":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Forum_hasModerator_Person, Forum id %s has moderator id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Forum_containerOf_Post":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Forum_containerOf_Post, Forum id %s contain of the post id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Tag_hasType_TagClass":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Tag_hasType_TagClass, Tag id %s has type of tag class id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Place_isPartOf_Place":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Place_isPartOf_Place, The place id %s is part of place id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Person_isLocatedIn_City":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Person_isLocatedIn_City, The person id %s is located in city id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Person_knows_Person":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Person_knows_Person, The person id %s knows person id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Person_studyAt_University":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Person_studyAt_University, The person id %s study at university id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Comment_hasCreator_Person":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Comment_hasCreator_Person, The comment id %s has creator person id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Post_hasCreator_Person":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Post_hasCreator_Person, The post id %s has creator person id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Person_likes_Post":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Person_likes_Post, The person id %s likes person id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Person_likes_Comment":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Person_likes_Comment, The person id %s likes comment id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Comment_replyOf_Post":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Comment_replyOf_Post, The comment id %s reply of the post id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Post_isLocatedIn_Country":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Post_isLocatedIn_Country, The post id %s is located in country id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Post_hasTag_Tag":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Post_hasTag_Tag, The post id %s has tag id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Comment_hasTag_Tag":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Comment_hasTag_Tag, The comment id %s has tag id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Comment_isLocatedIn_Country":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Comment_isLocatedIn_Country, The comment id %s is located in country id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "Comment_replyOf_Comment":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type Comment_replyOf_Comment, The comment id %s is reply of comment id %s",
+ edge.getSrcId(), edge.getDstId());
+ case "TagClass_isSubclassOf_TagClass":
+ edge = ((GraphEdge) entity).getEdge();
+ return String.format("One edge of Type TagClass_isSubclassOf_TagClass, The tag class id %s is subclass of the tag class id %s",
+ edge.getSrcId(), edge.getDstId());
+ default:
+ return entity.toString();
+ }
+ }
+}
diff --git a/geaflow-ai/src/test/java/org/apache/geaflow/ai/MockChatRobot.java b/geaflow-ai/src/test/java/org/apache/geaflow/ai/MockChatRobot.java
new file mode 100644
index 000000000..2b1248247
--- /dev/null
+++ b/geaflow-ai/src/test/java/org/apache/geaflow/ai/MockChatRobot.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai;
+
+import org.apache.geaflow.ai.common.model.EmbeddingService;
+import org.apache.geaflow.ai.common.model.ModelConfig;
+
+public class MockChatRobot {
+
+ private ModelConfig modelInfo;
+
+ public MockChatRobot() {
+ this.modelInfo = new ModelConfig();
+ }
+
+ public MockChatRobot(String model) {
+ this.modelInfo = new ModelConfig();
+ this.modelInfo.setModel(model);
+ }
+
+ public EmbeddingService.EmbeddingResult embeddingSingle(String input) {
+ return new EmbeddingService.EmbeddingResult(input, new double[0]);
+ }
+
+ public ModelConfig getModelInfo() {
+ return modelInfo;
+ }
+
+ public void setModelInfo(ModelConfig modelInfo) {
+ this.modelInfo = modelInfo;
+ }
+}
diff --git a/geaflow-ai/src/test/java/org/apache/geaflow/ai/MutableGraphTest.java b/geaflow-ai/src/test/java/org/apache/geaflow/ai/MutableGraphTest.java
new file mode 100644
index 000000000..dd2463c9c
--- /dev/null
+++ b/geaflow-ai/src/test/java/org/apache/geaflow/ai/MutableGraphTest.java
@@ -0,0 +1,142 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.geaflow.ai;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import org.apache.geaflow.ai.graph.LocalMemoryGraphAccessor;
+import org.apache.geaflow.ai.graph.MemoryMutableGraph;
+import org.apache.geaflow.ai.graph.io.*;
+import org.apache.geaflow.ai.index.EntityAttributeIndexStore;
+import org.apache.geaflow.ai.index.vector.KeywordVector;
+import org.apache.geaflow.ai.search.VectorSearch;
+import org.apache.geaflow.ai.verbalization.Context;
+import org.apache.geaflow.ai.verbalization.SubgraphSemanticPromptFunction;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class MutableGraphTest {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(MutableGraphTest.class);
+
+ @Test
+ public void testMutableGraph() {
+ GraphSchema graphSchema = new GraphSchema();
+ VertexSchema vertexSchema = new VertexSchema("chunk", "id",
+ Collections.singletonList("text"));
+ EdgeSchema edgeSchema = new EdgeSchema("relation", "srcId", "dstId",
+ Collections.singletonList("rel"));
+ graphSchema.addVertex(vertexSchema);
+ graphSchema.addEdge(edgeSchema);
+ Map<String, EntityGroup > entities = new HashMap<>();
+ entities.put(vertexSchema.getName(), new VertexGroup(vertexSchema, new ArrayList<>()));
+ entities.put(edgeSchema.getName(), new EdgeGroup(edgeSchema, new ArrayList<>()));
+ MemoryGraph graph = new MemoryGraph(graphSchema, entities);
+
+ LocalMemoryGraphAccessor graphAccessor = new LocalMemoryGraphAccessor(graph);
+ MemoryMutableGraph memoryMutableGraph = new MemoryMutableGraph(graph);
+ LOGGER.info("Success to init empty graph.");
+
+ EntityAttributeIndexStore indexStore = new EntityAttributeIndexStore();
+ indexStore.initStore(new SubgraphSemanticPromptFunction(graphAccessor));
+ LOGGER.info("Success to init EntityAttributeIndexStore.");
+
+ GraphMemoryServer server = new GraphMemoryServer();
+ server.addGraphAccessor(graphAccessor);
+ server.addIndexStore(indexStore);
+ LOGGER.info("Success to init GraphMemoryServer.");
+
+ memoryMutableGraph.addVertex(new Vertex(vertexSchema.getName(),
+ "apple", Collections.singletonList("apple is a kind of fruit.")));
+ memoryMutableGraph.addVertex(new Vertex(vertexSchema.getName(),
+ "banana", Collections.singletonList("banana is a kind of fruit.")));
+ memoryMutableGraph.addVertex(new Vertex(vertexSchema.getName(),
+ "grape", Collections.singletonList("grape is a kind of fruit.")));
+
+ String query = "How about apple?";
+ String result = searchInGraph(server, graphAccessor, query, 1);
+ LOGGER.info("query: {} result: {}", query, result);
+ Assertions.assertTrue(result.contains("apple"));
+
+ memoryMutableGraph.addVertex(new Vertex(vertexSchema.getName(),
+ "red", Collections.singletonList("red is a kind of color.")));
+ memoryMutableGraph.addVertex(new Vertex(vertexSchema.getName(),
+ "yellow", Collections.singletonList("yellow is a kind of color.")));
+ memoryMutableGraph.addVertex(new Vertex(vertexSchema.getName(),
+ "purple", Collections.singletonList("purple is a kind of color.")));
+ memoryMutableGraph.addEdge(new Edge(edgeSchema.getName(),
+ "apple", "red", Collections.singletonList("apple is red.")));
+ memoryMutableGraph.addEdge(new Edge(edgeSchema.getName(),
+ "banana", "yellow", Collections.singletonList("apple is yellow.")));
+ memoryMutableGraph.addEdge(new Edge(edgeSchema.getName(),
+ "grape", "purple", Collections.singletonList("apple is purple.")));
+
+ query = "What color is apple?";
+ result = searchInGraph(server, graphAccessor, query, 3);
+ LOGGER.info("query: {} result: {}", query, result);
+ Assertions.assertTrue(result.contains("apple is red"));
+
+ memoryMutableGraph.updateVertex(new Vertex(vertexSchema.getName(),
+ "red", Collections.singletonList("red is not a kind of fruit.")));
+
+ query = "How about red?";
+ result = searchInGraph(server, graphAccessor, query, 1);
+ LOGGER.info("query: {} result: {}", query, result);
+ Assertions.assertTrue(result.contains("red is not a kind of fruit."));
+
+ memoryMutableGraph.removeVertex(vertexSchema.getName(), "yellow");
+ query = "How about yellow?";
+ result = searchInGraph(server, graphAccessor, query, 1);
+ LOGGER.info("query: {} result: {}", query, result);
+ Assertions.assertFalse(result.contains("yellow is a kind of color."));
+
+ memoryMutableGraph.removeEdge(new Edge(edgeSchema.getName(),
+ "apple", "red", Collections.singletonList("apple is red.")));
+
+ query = "What color is apple?";
+ result = searchInGraph(server, graphAccessor, query, 3);
+ LOGGER.info("query: {} result: {}", query, result);
+ Assertions.assertFalse(result.contains("apple is red."));
+ Assertions.assertTrue(result.contains("apple is a kind of fruit."));
+ Assertions.assertTrue(result.contains("red is not a kind of fruit."));
+
+ }
+
+ private String searchInGraph(GraphMemoryServer server,
+ LocalMemoryGraphAccessor graphAccessor,
+ String query, int times) {
+ String sessionId = server.createSession();
+ Context context = null;
+ for (int i = 0; i < times; i++) {
+ VectorSearch search = new VectorSearch(null, sessionId);
+ search.addVector(new KeywordVector(query));
+ String searchResult = server.search(search);
+ Assertions.assertNotNull(searchResult);
+ context = server.verbalize(sessionId,
+ new SubgraphSemanticPromptFunction(graphAccessor));
+ }
+ assert context != null;
+ return context.toString();
+ }
+}
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment/part-00000-0ea3b18b-e932-4946-9be9-d17b750eafea-c0001.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment/part-00000-0ea3b18b-e932-4946-9be9-d17b750eafea-c0001.csv
new file mode 100644
index 000000000..72b4d1bd3
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment/part-00000-0ea3b18b-e932-4946-9be9-d17b750eafea-c0001.csv
@@ -0,0 +1,58 @@
+creationDate|id|locationIP|browserUsed|content|length
+2012-06-09T01:12:54.446+00:00|962072674715|200.13.148.38|Internet Explorer|About Jerry Lee Lewis, t the Star Club, Hamburg is often regarded by many music journalists and fans as one of tAbout A Thousand Leaves, same name. It was Thurston Moore who ca|177
+2012-09-14T09:46:25.139+00:00|1099511628874|14.208.255.176|Chrome|About Soviet Union, against the United States and its Western allies, which it ultimately abandoned in the face of economic troubles and both dome|146
+2011-05-02T16:58:17.418+00:00|481036339294|49.15.114.196|Chrome|About Mahmud of Ghazni, n Iran, as well as Pakistan and North-West India. About Jonathan Swift, his poetry. Swift originally published all of hisAbo|149
+2012-03-29T23:30:38.739+00:00|893353200586|190.108.133.151|Chrome|About Cicero, political careAbout John Milton, Milton has beenAbout Famous Blue Raincoa|88
+2011-05-14T11:39:13.717+00:00|549755817022|204.79.148.85|Chrome|About Henry VIII of England, s to the Kingdom of France. About How Do I Live, terw|82
+2011-09-24T12:40:19.833+00:00|687194770827|192.160.111.235|Internet Explorer|About Nelson Mandela, Campus. Questions have been raised reAbout Johannes Brahms, luence were considerable; following a About First Czechoslovak Repub|151
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_hasCreator_Person/part-00000-77bb2680-0143-453b-a57e-237bb2468cf1-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_hasCreator_Person/part-00000-77bb2680-0143-453b-a57e-237bb2468cf1-c000.csv
new file mode 100644
index 000000000..3dba20e22
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_hasCreator_Person/part-00000-77bb2680-0143-453b-a57e-237bb2468cf1-c000.csv
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_hasTag_Tag/part-00000-d5685860-f0ca-4b57-98b1-cc9b688b30c6-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_hasTag_Tag/part-00000-d5685860-f0ca-4b57-98b1-cc9b688b30c6-c000.csv
new file mode 100644
index 000000000..99d587c89
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_hasTag_Tag/part-00000-d5685860-f0ca-4b57-98b1-cc9b688b30c6-c000.csv
@@ -0,0 +1,5 @@
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_isLocatedIn_Country/part-00000-86f5e365-c8eb-42b8-9c45-be1136749ebf-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_isLocatedIn_Country/part-00000-86f5e365-c8eb-42b8-9c45-be1136749ebf-c000.csv
new file mode 100644
index 000000000..57492fea9
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_isLocatedIn_Country/part-00000-86f5e365-c8eb-42b8-9c45-be1136749ebf-c000.csv
@@ -0,0 +1,2 @@
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_replyOf_Comment/part-00000-fed82766-b5eb-4724-bf11-2cb6b0c498d1-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_replyOf_Comment/part-00000-fed82766-b5eb-4724-bf11-2cb6b0c498d1-c000.csv
new file mode 100644
index 000000000..21adb000e
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_replyOf_Comment/part-00000-fed82766-b5eb-4724-bf11-2cb6b0c498d1-c000.csv
@@ -0,0 +1 @@
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_replyOf_Post/part-00000-3217ef34-4a71-4b35-a6c7-40d0ce55e745-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Comment_replyOf_Post/part-00000-3217ef34-4a71-4b35-a6c7-40d0ce55e745-c000.csv
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index 000000000..e82f9f880
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum/part-00000-f8e268f3-1ce7-4f7c-a636-2afefbb1a96b-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum/part-00000-f8e268f3-1ce7-4f7c-a636-2afefbb1a96b-c000.csv
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index 000000000..1d184e28e
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@@ -0,0 +1,2 @@
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_containerOf_Post/part-00000-8f8b7c0e-8a61-43d0-b118-d45e51ac8346-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_containerOf_Post/part-00000-8f8b7c0e-8a61-43d0-b118-d45e51ac8346-c000.csv
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index 000000000..cf6690a88
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+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_containerOf_Post/part-00000-8f8b7c0e-8a61-43d0-b118-d45e51ac8346-c000.csv
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_hasMember_Person/part-00000-fcbe7eed-213e-4044-82ac-1deb7607d428-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_hasMember_Person/part-00000-fcbe7eed-213e-4044-82ac-1deb7607d428-c000.csv
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index 000000000..b5392b4d8
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_hasModerator_Person/part-00000-ed92dadb-3b80-45de-a6ed-cb51324d9222-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_hasModerator_Person/part-00000-ed92dadb-3b80-45de-a6ed-cb51324d9222-c000.csv
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index 000000000..c891274d9
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diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_hasTag_Tag/part-00000-a90294ce-d86a-4f6a-b660-9367cc6530b9-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Forum_hasTag_Tag/part-00000-a90294ce-d86a-4f6a-b660-9367cc6530b9-c000.csv
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+2010-02-19T12:42:14.255+00:00|166|Chaim Azriel|Hleb|male|1985-10-01|178.238.2.172|Firefox|ru;pl;en|Chaim.Azriel166@yahoo.com;Chaim.Azriel166@gmail.com;Chaim.Azriel166@gmx.com;Chaim.Azriel166@hotmail.com;Chaim.Azriel166@theblackmarket.com
+2011-09-18T02:40:31.062+00:00|21990232556059|Chaim Azriel|Epstein|male|1981-07-17|80.94.167.126|Firefox|ru;pl;en|Chaim.Azriel21990232556059@gmx.com;Chaim.Azriel21990232556059@gmail.com;Chaim.Azriel21990232556059@hotmail.com;Chaim.Azriel21990232556059@yahoo.com;Chaim.Azriel21990232556059@zoho.com
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_hasInterest_Tag/part-00000-8119e7ba-eef1-4531-a329-fe69aae3a842-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_hasInterest_Tag/part-00000-8119e7ba-eef1-4531-a329-fe69aae3a842-c000.csv
new file mode 100644
index 000000000..844b52d89
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_hasInterest_Tag/part-00000-8119e7ba-eef1-4531-a329-fe69aae3a842-c000.csv
@@ -0,0 +1 @@
+creationDate|PersonId|TagId
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_isLocatedIn_City/part-00000-cc303aad-ca12-4d62-a0fa-f666cd4bd0a8-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_isLocatedIn_City/part-00000-cc303aad-ca12-4d62-a0fa-f666cd4bd0a8-c000.csv
new file mode 100644
index 000000000..1e624f2ab
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_isLocatedIn_City/part-00000-cc303aad-ca12-4d62-a0fa-f666cd4bd0a8-c000.csv
@@ -0,0 +1 @@
+creationDate|PersonId|CityId
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_knows_Person/part-00000-bbdf70c1-9235-4ae5-a5bd-315c602b7aa7-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_knows_Person/part-00000-bbdf70c1-9235-4ae5-a5bd-315c602b7aa7-c000.csv
new file mode 100644
index 000000000..189f6cd98
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_knows_Person/part-00000-bbdf70c1-9235-4ae5-a5bd-315c602b7aa7-c000.csv
@@ -0,0 +1 @@
+creationDate|Person1Id|Person2Id
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_likes_Comment/part-00000-15c95f3c-1bb2-437a-88da-44454947912b-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_likes_Comment/part-00000-15c95f3c-1bb2-437a-88da-44454947912b-c000.csv
new file mode 100644
index 000000000..368764692
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_likes_Comment/part-00000-15c95f3c-1bb2-437a-88da-44454947912b-c000.csv
@@ -0,0 +1,16 @@
+creationDate|PersonId|CommentId
+2012-02-16T22:28:48.778+00:00|1425|824633727481
+2012-02-11T08:18:43.169+00:00|15393162789718|824633727481
+2012-02-13T20:27:31.805+00:00|17592186045041|824633727481
+2012-02-15T15:52:38.691+00:00|17592186045813|824633727481
+2012-05-30T08:21:40.984+00:00|21990232556059|962072691272
+2012-03-25T08:45:56.091+00:00|21990232556059|893353214787
+2012-09-28T08:24:35.533+00:00|21990232556059|1099511645075
+2012-11-25T17:43:45.507+00:00|21990232556059|1168231121995
+2012-11-26T10:28:56.275+00:00|21990232556059|1168231122116
+2012-09-30T18:04:55.826+00:00|21990232556059|1099511645855
+2012-10-05T13:35:56.365+00:00|21990232556059|1099511646152
+2012-11-02T07:46:28.808+00:00|166|1099511648359
+2012-03-16T10:19:13.490+00:00|166|893353218272
+2012-04-30T11:33:41.987+00:00|166|893353218392
+2012-08-11T23:32:50.614+00:00|166|1030792200386
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_likes_Post/part-00000-80467545-319b-45b9-9df7-5bf613102255-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_likes_Post/part-00000-80467545-319b-45b9-9df7-5bf613102255-c000.csv
new file mode 100644
index 000000000..c00f54a9e
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_likes_Post/part-00000-80467545-319b-45b9-9df7-5bf613102255-c000.csv
@@ -0,0 +1,2 @@
+creationDate|PersonId|PostId
+2012-10-23T01:52:26.828+00:00|21990232556059|1099511644452
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_studyAt_University/part-00000-773b544a-a4e8-4669-9d72-6f9563e37e0a-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_studyAt_University/part-00000-773b544a-a4e8-4669-9d72-6f9563e37e0a-c000.csv
new file mode 100644
index 000000000..2b51bfd3f
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_studyAt_University/part-00000-773b544a-a4e8-4669-9d72-6f9563e37e0a-c000.csv
@@ -0,0 +1 @@
+creationDate|PersonId|UniversityId|classYear
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_workAt_Company/part-00000-8955972b-aaaf-431b-af04-bb8b8371303a-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_workAt_Company/part-00000-8955972b-aaaf-431b-af04-bb8b8371303a-c000.csv
new file mode 100644
index 000000000..034a8ae0e
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Person_workAt_Company/part-00000-8955972b-aaaf-431b-af04-bb8b8371303a-c000.csv
@@ -0,0 +1 @@
+creationDate|PersonId|CompanyId|workFrom
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Place/part-00000-e23c300a-6036-4119-afaf-d4a2e45a602c-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Place/part-00000-e23c300a-6036-4119-afaf-d4a2e45a602c-c000.csv
new file mode 100644
index 000000000..1420b4449
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Place/part-00000-e23c300a-6036-4119-afaf-d4a2e45a602c-c000.csv
@@ -0,0 +1 @@
+id|name|url|type
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Place_isPartOf_Place/part-00000-773c5c1f-ce07-41a9-ab10-836b6a201aab-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Place_isPartOf_Place/part-00000-773c5c1f-ce07-41a9-ab10-836b6a201aab-c000.csv
new file mode 100644
index 000000000..1173c3d97
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Place_isPartOf_Place/part-00000-773c5c1f-ce07-41a9-ab10-836b6a201aab-c000.csv
@@ -0,0 +1 @@
+Place1Id|Place2Id
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Post/part-00000-ab6f4085-f12a-4818-a371-e07cbb2f8fe8-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Post/part-00000-ab6f4085-f12a-4818-a371-e07cbb2f8fe8-c000.csv
new file mode 100644
index 000000000..684e38339
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Post/part-00000-ab6f4085-f12a-4818-a371-e07cbb2f8fe8-c000.csv
@@ -0,0 +1,20 @@
+creationDate|id|imageFile|locationIP|browserUsed|language|content|length
+2012-07-20T18:17:53.401+00:00|1030792151482||31.182.127.125|Internet Explorer|pl|About Shania Twain, ased in November 2002. To date it has sold 20 million copies worldwide. Twain has won five Gra|114
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+2012-02-16T04:35:39.640+00:00|824633721727||196.29.42.107|Firefox|ar|About Fidel Castro, alliance with the Soviet Union and allowed them to place nuclear weapons on the i|102
+2011-06-15T06:45:05.095+00:00|549755816877||190.5.24.199|Chrome|en|About David Hockney, gner and phAbout Miley Cyrus, h Montana. About You Get What You Give, rs UnleasheAbo|105
+2012-11-15T20:30:38.592+00:00|1168231107960||178.238.2.172|Firefox|pl|About Louis XIV of France, y, many members of which had parAbout Edward IV of England, rcame|93
+2012-03-26T12:40:47.018+00:00|893353201396||27.54.75.46|Firefox|en|About Lachlan Macquarie, onsidered by some historians to have had a crucial influence on the transition of New South Wales from a penal colony to a free settlement and therefore to have played|193
+2012-04-21T11:28:28.597+00:00|893353202439||31.31.209.55|Internet Explorer|de|About John Rhys-Davies, logy. He also played Agent Michael Malone in the 1993 remakAbout How Am I Supposed to Live Without You, 1993 for Over My Heart. Though Branigan 2 wen|174
+2011-12-27T00:37:34.741+00:00|755914249344||27.96.85.34|Firefox|en|About Humayun, umayun was the second Mughal Emperor who ruled present day AAbout James Cameron, rts have grossed approx|119
+2011-06-15T11:21:05.095+00:00|549755819919||61.28.131.62|Firefox|tl|About Maurice Ravel, any other French comAbout David Hockney, one of the most inflAbout William How|101
+2012-07-21T22:31:29.679+00:00|1030792159194||1.2.1.48|Firefox|zh|About Dusty Springfield, harts in collaboration with the Pet Shop Boys on the songs What Have I Done to Deserve Thi|115
+2012-06-27T18:11:41.913+00:00|962072682488||203.144.56.205|Internet Explorer|zh|About Dusty Springfield, charts in collaboration with the Pet Shop Boys on the songs What Have I Done to Deserve T|114
+2012-10-10T04:59:18.836+00:00|1099511636145||41.214.181.193|Internet Explorer|zh|About Dusty Springfield, (1964), I Just Don't Know What to Do with Myself (1964), You Don't Have to Say Y|106
+2012-10-22T21:27:52.640+00:00|1099511636200||31.211.182.228|Safari|zh|About Dusty Springfield, et Shop Boys on the songs What Have I Done to Deserve This?, Noth|90
+2012-11-20T03:41:37.409+00:00|1168231113797||202.69.11.241|Internet Explorer|zh|About Louis Philippe I, rom 1830 to 1848 in what was known as the July Monarchy. His father|91
+2010-05-27T03:41:21.013+00:00|137438965532||202.8.75.0|Firefox|fr|About Paula Abdul, ul moved to the first seAbout Isaac Asimov, s works have been publisAbout G|94
+2010-12-07T10:22:02.762+00:00|343597397902||24.31.187.242|Chrome|es|About Jacques Offenbach, ith Offenbach's facility for melody, made them internationally known, and translated versio|116
+2010-10-20T08:04:25.776+00:00|274877921325||24.31.187.242|Chrome|es|About Jacques Offenbach, his own small-scale pieces, many of which becamAbout Roger Federer, d|95
+2012-07-02T22:16:08.046+00:00|962072691735||1.4.5.168|Firefox|gu|About Mohammad Reza Pahlavi, According to official statistics, Iran had as many as 2,200 political prisoners in 1978, a number which|132
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_hasCreator_Person/part-00000-7457dc74-44d7-4ee0-8201-9940057bf0e8-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_hasCreator_Person/part-00000-7457dc74-44d7-4ee0-8201-9940057bf0e8-c000.csv
new file mode 100644
index 000000000..6ac670927
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_hasCreator_Person/part-00000-7457dc74-44d7-4ee0-8201-9940057bf0e8-c000.csv
@@ -0,0 +1,13 @@
+creationDate|PostId|PersonId
+2012-07-20T18:17:53.401+00:00|1030792151482|27
+2011-12-21T12:05:43.074+00:00|755914247530|166
+2010-07-10T05:04:07.150+00:00|206158433649|166
+2012-11-15T20:30:38.592+00:00|1168231107960|166
+2010-10-30T06:42:32.753+00:00|274877910399|166
+2010-06-02T19:25:53.984+00:00|137438956940|166
+2010-10-30T20:07:17.753+00:00|274877910425|166
+2012-04-21T11:28:28.597+00:00|893353202439|460
+2011-06-15T11:21:05.095+00:00|549755819919|529
+2012-10-16T09:44:45.548+00:00|1099511644342|21990232556059
+2012-11-20T04:28:21.628+00:00|1168231121079|21990232556059
+2012-02-18T09:38:41.694+00:00|824633737400|21990232556059
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_hasTag_Tag/part-00000-76abe36a-60da-4e94-82fa-326be3dd1915-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_hasTag_Tag/part-00000-76abe36a-60da-4e94-82fa-326be3dd1915-c000.csv
new file mode 100644
index 000000000..cfa3f0e8b
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_hasTag_Tag/part-00000-76abe36a-60da-4e94-82fa-326be3dd1915-c000.csv
@@ -0,0 +1,8 @@
+creationDate|PostId|TagId
+2012-07-20T18:17:53.401+00:00|1030792151482|291
+2012-04-21T11:28:28.597+00:00|893353202439|11718
+2011-06-15T11:21:05.095+00:00|549755819919|572
+2011-06-15T11:21:05.095+00:00|549755819919|2423
+2011-06-15T11:21:05.095+00:00|549755819919|2857
+2011-06-15T11:21:05.095+00:00|549755819919|5927
+2011-06-15T11:21:05.095+00:00|549755819919|9307
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_isLocatedIn_Country/part-00000-514b3315-27ef-4bf2-b6c8-85454d8c50d1-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_isLocatedIn_Country/part-00000-514b3315-27ef-4bf2-b6c8-85454d8c50d1-c000.csv
new file mode 100644
index 000000000..7b9b99c20
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Post_isLocatedIn_Country/part-00000-514b3315-27ef-4bf2-b6c8-85454d8c50d1-c000.csv
@@ -0,0 +1,3 @@
+creationDate|PostId|CountryId
+2012-07-20T18:17:53.401+00:00|1030792151482|92
+2011-06-15T11:21:05.095+00:00|549755819919|55
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Tag/part-00000-552a5973-be8c-4a64-8495-12475edb9268-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Tag/part-00000-552a5973-be8c-4a64-8495-12475edb9268-c000.csv
new file mode 100644
index 000000000..32568070e
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Tag/part-00000-552a5973-be8c-4a64-8495-12475edb9268-c000.csv
@@ -0,0 +1 @@
+id|name|url
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/TagClass/part-00000-a7819ae9-3a8a-4b0d-bda9-42afd23b05b7-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/TagClass/part-00000-a7819ae9-3a8a-4b0d-bda9-42afd23b05b7-c000.csv
new file mode 100644
index 000000000..32568070e
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/TagClass/part-00000-a7819ae9-3a8a-4b0d-bda9-42afd23b05b7-c000.csv
@@ -0,0 +1 @@
+id|name|url
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/TagClass_isSubclassOf_TagClass/part-00000-59a40ae1-065f-497c-a4f0-5630f603c3cd-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/TagClass_isSubclassOf_TagClass/part-00000-59a40ae1-065f-497c-a4f0-5630f603c3cd-c000.csv
new file mode 100644
index 000000000..cc628c791
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/TagClass_isSubclassOf_TagClass/part-00000-59a40ae1-065f-497c-a4f0-5630f603c3cd-c000.csv
@@ -0,0 +1 @@
+TagClass1Id|TagClass2Id
diff --git a/geaflow-ai/src/test/resources/graph_ldbc_sf/Tag_hasType_TagClass/part-00000-cc5fb343-f815-4288-b7c0-8251d3d39696-c000.csv b/geaflow-ai/src/test/resources/graph_ldbc_sf/Tag_hasType_TagClass/part-00000-cc5fb343-f815-4288-b7c0-8251d3d39696-c000.csv
new file mode 100644
index 000000000..39d43202c
--- /dev/null
+++ b/geaflow-ai/src/test/resources/graph_ldbc_sf/Tag_hasType_TagClass/part-00000-cc5fb343-f815-4288-b7c0-8251d3d39696-c000.csv
@@ -0,0 +1 @@
+TagId|TagClassId
diff --git a/geaflow-ai/src/test/resources/index/LDBCEmbeddingIndexStore b/geaflow-ai/src/test/resources/index/LDBCEmbeddingIndexStore
new file mode 100644
index 000000000..3398d1234
--- /dev/null
+++ b/geaflow-ai/src/test/resources/index/LDBCEmbeddingIndexStore
@@ -0,0 +1,362 @@
+{"input":"VComment481036339294Comment","embedding":[0.010965966,0.0149804475,-0.019568427,0.015837798,-0.0013540911,0.117248364,-0.038603906,-0.033158578,-0.027782764,-0.005682838,-0.016811006,0.027551048,0.03505865,0.021456914,0.021387398,0.015061549,0.0030383777,0.042612597,-0.0030702387,-0.0015235336,0.044188265,0.012188269,-0.093474284,0.0015944967,0.035661113,0.009981172,-0.05904127,-0.009187545,0.019197682,-0.033135407,-0.03288052,0.010496741,0.023368571,0.01243157,0.015837798,0.02 [...]
+{"input":"VComment481036339294Comment","embedding":[0.017355971,0.03818751,-0.046340883,-0.04354294,-0.0031394854,0.053292014,-0.036919694,-0.042253267,0.0024181416,-0.018875167,-0.02195727,0.006257112,0.03873398,0.03672296,0.047696136,0.0072844806,0.03759732,-0.015650976,-5.451065E-4,-0.019618368,0.018241258,-0.0027624194,-0.016503474,-0.013366722,-0.0130934855,-0.066713385,-0.049226258,-0.01936699,0.016350463,0.017257607,-0.007257157,0.05416637,-0.032744642,0.08061565,-0.038209368,-0.0 [...]
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diff --git a/pom.xml b/pom.xml
index f364d084d..66d19baee 100644
--- a/pom.xml
+++ b/pom.xml
@@ -68,6 +68,7 @@
<module>geaflow</module>
<module>geaflow-console</module>
<module>geaflow-mcp</module>
+ <module>geaflow-ai</module>
</modules>
<licenses>
@@ -180,18 +181,18 @@
<goals>
<goal>prepare-agent</goal>
</goals>
- <configuration>
+ <configuration>
<propertyName>coverageAgent</propertyName>
<destFile>${jacoco.path}</destFile>
- <!-- Allocate 400MB for each test process, reserve system overhead -->
- <argLine>${coverageAgent} -Xmx400m -XX:MaxMetaspaceSize=128m -XX:+UseG1GC</argLine>
-
- <!-- Maximum 2 parallel processes -->
- <forkCount>2</forkCount>
- <reuseForks>false</reuseForks>
- <parallel>classes</parallel>
- <threadCount>2</threadCount>
- <perCoreThreadCount>false</perCoreThreadCount>
+ <!-- Allocate 400MB for each test process, reserve system overhead -->
+ <argLine>${coverageAgent} -Xmx400m -XX:MaxMetaspaceSize=128m -XX:+UseG1GC</argLine>
+
+ <!-- Maximum 2 parallel processes -->
+ <forkCount>2</forkCount>
+ <reuseForks>false</reuseForks>
+ <parallel>classes</parallel>
+ <threadCount>2</threadCount>
+ <perCoreThreadCount>false</perCoreThreadCount>
</configuration>
</execution>
<execution>
@@ -333,6 +334,8 @@
<exclude>**/web-dashboard/**</exclude>
<exclude>**/codegen/**</exclude>
<exclude>**/template/*.vm</exclude>
+ <exclude>**/resources/graph_ldbc_sf/**/**</exclude>
+ <exclude>**/resources/index/**</exclude>
<exclude>**/resources/data/**</exclude>
<exclude>**/resources/expect/**</exclude>
<exclude>**/resources/zip_test2.txt</exclude>
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