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Posted to commits@flink.apache.org by ja...@apache.org on 2022/08/30 12:30:52 UTC
[flink] branch master updated: [FLINK-28751][table] Improve the performance of JSON functions with json path (#20397)
This is an automated email from the ASF dual-hosted git repository.
jark pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/flink.git
The following commit(s) were added to refs/heads/master by this push:
new 2220f24925a [FLINK-28751][table] Improve the performance of JSON functions with json path (#20397)
2220f24925a is described below
commit 2220f24925ab5146d5771c3782ed8c0837bb0bc4
Author: Aitozi <yu...@alibaba-inc.com>
AuthorDate: Tue Aug 30 20:30:42 2022 +0800
[FLINK-28751][table] Improve the performance of JSON functions with json path (#20397)
---
.../table/runtime/functions/JsonPathCache.java | 43 ++++++++++++++++++++++
.../table/runtime/functions/SqlJsonUtils.java | 5 +++
2 files changed, 48 insertions(+)
diff --git a/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/JsonPathCache.java b/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/JsonPathCache.java
new file mode 100644
index 00000000000..097419459c9
--- /dev/null
+++ b/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/JsonPathCache.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.flink.table.runtime.functions;
+
+import org.apache.flink.shaded.guava30.com.google.common.cache.CacheBuilder;
+
+import com.jayway.jsonpath.JsonPath;
+import com.jayway.jsonpath.spi.cache.Cache;
+
+/** The default cache for the jsonpath {@link com.jayway.jsonpath.spi.cache.CacheProvider}. */
+public class JsonPathCache implements Cache {
+
+ private static final long DEFAULT_CACHE_MAXIMUM_SIZE = 400;
+
+ private final org.apache.flink.shaded.guava30.com.google.common.cache.Cache<String, JsonPath>
+ jsonPathCache =
+ CacheBuilder.newBuilder().maximumSize(DEFAULT_CACHE_MAXIMUM_SIZE).build();
+
+ @Override
+ public JsonPath get(String s) {
+ return jsonPathCache.getIfPresent(s);
+ }
+
+ @Override
+ public void put(String s, JsonPath jsonPath) {
+ jsonPathCache.put(s, jsonPath);
+ }
+}
diff --git a/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/SqlJsonUtils.java b/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/SqlJsonUtils.java
index 7602a1946e3..2d7dec14288 100644
--- a/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/SqlJsonUtils.java
+++ b/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/SqlJsonUtils.java
@@ -41,6 +41,7 @@ import com.jayway.jsonpath.DocumentContext;
import com.jayway.jsonpath.InvalidPathException;
import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.Option;
+import com.jayway.jsonpath.spi.cache.CacheProvider;
import com.jayway.jsonpath.spi.json.JacksonJsonProvider;
import com.jayway.jsonpath.spi.mapper.JacksonMappingProvider;
import com.jayway.jsonpath.spi.mapper.MappingProvider;
@@ -74,6 +75,10 @@ public class SqlJsonUtils {
private SqlJsonUtils() {}
+ static {
+ CacheProvider.setCache(new JsonPathCache());
+ }
+
/** Returns the {@link JsonNodeFactory} for creating nodes. */
public static JsonNodeFactory getNodeFactory() {
return MAPPER.getNodeFactory();