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new 24aae3188f [INLONG-11305][SDK] Transform SQL supports "JSON_SET"
function (#11346)
24aae3188f is described below
commit 24aae3188f5c973344bfebb5b1bdf82145efec7e
Author: Zkplo <[email protected]>
AuthorDate: Tue Oct 15 18:09:45 2024 +0800
[INLONG-11305][SDK] Transform SQL supports "JSON_SET" function (#11346)
---
.../process/function/json/JsonSetFunction.java | 105 +++++++++++++++++++++
.../process/function/json/TestJsonSetFunction.java | 73 ++++++++++++++
2 files changed, 178 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/json/JsonSetFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/json/JsonSetFunction.java
new file mode 100644
index 0000000000..62ba9fac0a
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/json/JsonSetFunction.java
@@ -0,0 +1,105 @@
+/*
+ * 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.inlong.sdk.transform.process.function.json;
+
+import org.apache.inlong.sdk.transform.decode.SourceData;
+import org.apache.inlong.sdk.transform.process.Context;
+import org.apache.inlong.sdk.transform.process.function.TransformFunction;
+import org.apache.inlong.sdk.transform.process.operator.OperatorTools;
+import org.apache.inlong.sdk.transform.process.parser.ValueParser;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONPath;
+import net.sf.jsqlparser.expression.Expression;
+import net.sf.jsqlparser.expression.Function;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * JsonSetFunction -> JSON_SET(json_doc, path, val[, path, val, ...] )
+ * description:
+ * - return NULL if any argument is NULL or the 'json_doc' argument is not a
valid JSON document or any path argument
+ * is not a valid path expression or contains a * or ** wildcard;
+ * - return the result of inserting or updating data in 'json_doc'.
+ */
+@TransformFunction(names = {
+ "json_set"}, parameter = "(String json_doc, String path1, String
val1[, String path2, String val2, ...] )", descriptions = {
+ "- Return \"\" if any argument is NULL or the 'json_doc'
argument is not a valid JSON document or any path argument"
+ +
+ " is not a valid path expression or contains a * or **
wildcard;",
+ "- Return the result of inserting or updating data in
'json_doc'."
+ }, examples = {
+ "json_set({\\\"name\\\":\\\"Alice\\\"},\"$.name\",\"inlong\")
= {\"name\":\"inlong\"}"
+ })
+public class JsonSetFunction implements ValueParser {
+
+ private ValueParser jsonDocParser;
+ private List<ValueParser> pathValuePairsParser;
+
+ public JsonSetFunction(Function expr) {
+ List<Expression> expressions = expr.getParameters().getExpressions();
+ jsonDocParser = OperatorTools.buildParser(expressions.get(0));
+ pathValuePairsParser = new ArrayList<>();
+ for (int i = 1; i < expressions.size(); i++) {
+
pathValuePairsParser.add(OperatorTools.buildParser(expressions.get(i)));
+ }
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ Object jsonDocObj = jsonDocParser.parse(sourceData, rowIndex, context);
+ if (jsonDocObj == null) {
+ return null;
+ }
+ ArrayList<Object> pathValuePairs = new ArrayList<>();
+ for (ValueParser valueParser : pathValuePairsParser) {
+ pathValuePairs.add(valueParser.parse(sourceData, rowIndex,
context));
+ }
+ return jsonSet(jsonDocObj.toString(), pathValuePairs);
+ }
+
+ private String jsonSet(String jsonDoc, ArrayList<Object> pathValuePairs) {
+ if (jsonDoc == null || pathValuePairs == null || pathValuePairs.size()
% 2 != 0) {
+ return null;
+ }
+
+ Object json = JSON.parse(jsonDoc);
+
+ for (int i = 0; i < pathValuePairs.size(); i += 2) {
+ String path = (String) pathValuePairs.get(i);
+ Object value = pathValuePairs.get(i + 1);
+
+ if (path == null || path.contains("*") || path.contains("**")) {
+ throw new IllegalArgumentException("Invalid path expression: "
+ path);
+ }
+ if ("$".equals(path)) {
+ json = JSON.parse(value.toString());
+ continue;
+ }
+ // Insert or update data, if the path does not exist, insert new
data
+ try {
+ JSONPath.set(json, path, JSON.parse(value.toString()));
+ } catch (Exception ignored) {
+ JSONPath.set(json, path, value);
+ }
+ }
+
+ return json.toString();
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/json/TestJsonSetFunction.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/json/TestJsonSetFunction.java
new file mode 100644
index 0000000000..119db13104
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/json/TestJsonSetFunction.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.inlong.sdk.transform.process.function.json;
+
+import org.apache.inlong.sdk.transform.decode.SourceDecoderFactory;
+import org.apache.inlong.sdk.transform.encode.SinkEncoderFactory;
+import org.apache.inlong.sdk.transform.pojo.TransformConfig;
+import org.apache.inlong.sdk.transform.process.TransformProcessor;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class TestJsonSetFunction extends AbstractFunctionJsonTestBase {
+
+ @Test
+ public void testJsonSetFunction() throws Exception {
+ String transformSql = null, data = null;
+ TransformConfig config = null;
+ TransformProcessor<String, String> processor = null;
+ List<String> output = null;
+
+ transformSql = "select json_set(string1,string2,string3) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case1: json_set(json_doc,$.address,Wonderland)
+ String json_doc = "{\\\"name\\\":\\\"Alice\\\"}";
+ data = json_doc + "|$.address|Wonderland|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+
Assert.assertEquals("result={\"address\":\"Wonderland\",\"name\":\"Alice\"}",
output.get(0));
+
+ // case2: json_set(json_doc,$.name,inlong)
+ json_doc = "{\\\"name\\\":\\\"Alice\\\"}";
+ data = json_doc + "|$.name|inlong|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result={\"name\":\"inlong\"}", output.get(0));
+
+ transformSql = "select
json_set(string1,string2,string3,numeric1,numeric2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case3: json_set(json_doc,$,{"newKey":"newValue"},$.newKey,"new1")
+ json_doc = "{\\\"name\\\":\\\"Alice\\\"}";
+ data = json_doc +
"|$|{\\\"newKey\\\":\\\"newValue\\\"}|\"$.newKey\"|\"new1\"";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result={\"newKey\":\"new1\"}", output.get(0));
+ }
+}
