[iotdb] 01/03: add IntoComponent

[hu...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

hui pushed a commit to branch lmh/selectInto
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit a3749028b6fd1a54e8ee14600596dd84eea31db4
Author: Minghui Liu <li...@foxmail.com>
AuthorDate: Tue Aug 30 10:35:22 2022 +0800

    add IntoComponent
---
 .../iotdb/db/mpp/plan/parser/ASTVisitor.java       | 17 ++++++++-
 .../plan/statement/component/IntoComponent.java    | 44 ++++++++++++++++++++++
 .../db/mpp/plan/statement/crud/QueryStatement.java | 12 ++++++
 3 files changed, 72 insertions(+), 1 deletion(-)

diff --git a/server/src/main/java/org/apache/iotdb/db/mpp/plan/parser/ASTVisitor.java b/server/src/main/java/org/apache/iotdb/db/mpp/plan/parser/ASTVisitor.java
index 0c51b1a958..af8243890d 100644
--- a/server/src/main/java/org/apache/iotdb/db/mpp/plan/parser/ASTVisitor.java
+++ b/server/src/main/java/org/apache/iotdb/db/mpp/plan/parser/ASTVisitor.java
@@ -67,6 +67,7 @@ import org.apache.iotdb.db.mpp.plan.statement.component.FromComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.GroupByLevelComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.GroupByTimeComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.HavingCondition;
+import org.apache.iotdb.db.mpp.plan.statement.component.IntoComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.OrderByComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.Ordering;
 import org.apache.iotdb.db.mpp.plan.statement.component.ResultColumn;
@@ -749,10 +750,15 @@ public class ASTVisitor extends IoTDBSqlParserBaseVisitor<Statement> {
     // initialize query statement
     queryStatement = new QueryStatement();
 
-    // parser select, from
+    // parse select, from
     parseSelectClause(ctx.selectClause());
     parseFromClause(ctx.fromClause());
 
+    // parse into clause
+    if (ctx.intoClause() != null) {
+      parseIntoClause(ctx.intoClause());
+    }
+
     // parse where clause
     if (ctx.whereClause() != null) {
       WhereCondition whereCondition = parseWhereClause(ctx.whereClause());
@@ -1303,6 +1309,15 @@ public class ASTVisitor extends IoTDBSqlParserBaseVisitor<Statement> {
     }
   }
 
+  // parse INTO clause
+
+  private void parseIntoClause(IoTDBSqlParser.IntoClauseContext ctx) {
+    boolean isAligned = ctx.ALIGNED() != null;
+    List<PartialPath> intoPaths = new ArrayList<>();
+
+    queryStatement.setIntoComponent(new IntoComponent(intoPaths, isAligned));
+  }
+
   // Insert Statement ========================================================================
 
   @Override
diff --git a/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/component/IntoComponent.java b/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/component/IntoComponent.java
new file mode 100644
index 0000000000..02f471c396
--- /dev/null
+++ b/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/component/IntoComponent.java
@@ -0,0 +1,44 @@
+/*
+ * 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.iotdb.db.mpp.plan.statement.component;
+
+import org.apache.iotdb.commons.path.PartialPath;
+
+import java.util.List;
+
+/** This class maintains information of {@code INTO} clause. */
+public class IntoComponent {
+
+  private final List<PartialPath> intoPaths;
+  private final boolean isAligned;
+
+  public IntoComponent(List<PartialPath> intoPaths, boolean isAligned) {
+    this.intoPaths = intoPaths;
+    this.isAligned = isAligned;
+  }
+
+  public List<PartialPath> getIntoPaths() {
+    return intoPaths;
+  }
+
+  public boolean isAligned() {
+    return isAligned;
+  }
+}
diff --git a/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/crud/QueryStatement.java b/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/crud/QueryStatement.java
index 0b06d17aa1..18b94088aa 100644
--- a/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/crud/QueryStatement.java
+++ b/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/crud/QueryStatement.java
@@ -32,6 +32,7 @@ import org.apache.iotdb.db.mpp.plan.statement.component.FromComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.GroupByLevelComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.GroupByTimeComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.HavingCondition;
+import org.apache.iotdb.db.mpp.plan.statement.component.IntoComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.OrderByComponent;
 import org.apache.iotdb.db.mpp.plan.statement.component.Ordering;
 import org.apache.iotdb.db.mpp.plan.statement.component.ResultColumn;
@@ -91,6 +92,9 @@ public class QueryStatement extends Statement {
   // `GROUP BY LEVEL` clause
   protected GroupByLevelComponent groupByLevelComponent;
 
+  // `INTO` clause
+  protected IntoComponent intoComponent;
+
   public QueryStatement() {
     this.statementType = StatementType.QUERY;
   }
@@ -244,6 +248,14 @@ public class QueryStatement extends Statement {
     return orderByComponent != null && orderByComponent.isOrderByDevice();
   }
 
+  public IntoComponent getIntoComponent() {
+    return intoComponent;
+  }
+
+  public void setIntoComponent(IntoComponent intoComponent) {
+    this.intoComponent = intoComponent;
+  }
+
   public Ordering getResultTimeOrder() {
     if (orderByComponent == null || !orderByComponent.isOrderByTime()) {
       return Ordering.ASC;