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new d327caecad [INLONG-11301][SDK] Transform SQL supports
"JSON_ARRAY_INSERT" function (#11319)
d327caecad is described below
commit d327caecad9e58709b5afd64ce199509572c7232
Author: Zkplo <[email protected]>
AuthorDate: Thu Oct 10 19:37:35 2024 +0800
[INLONG-11301][SDK] Transform SQL supports "JSON_ARRAY_INSERT" function
(#11319)
Co-authored-by: ZKpLo <[email protected]>
---
.../process/function/JsonArrayInsertFunction.java | 124 +++++++++++++++++++++
.../string/TestJsonArrayInsertFunction.java | 89 +++++++++++++++
2 files changed, 213 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/JsonArrayInsertFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/JsonArrayInsertFunction.java
new file mode 100644
index 0000000000..4c8e722dcc
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/JsonArrayInsertFunction.java
@@ -0,0 +1,124 @@
+/*
+ * 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;
+
+import org.apache.inlong.sdk.transform.decode.SourceData;
+import org.apache.inlong.sdk.transform.process.Context;
+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.JSONArray;
+import com.alibaba.fastjson.JSONObject;
+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;
+
+/**
+ * JsonArrayInsertFunction -> JSON_ARRAY_INSERT(json_doc, path, val[, path,
val] ...)
+ * description:
+ * - return NULL if any argument is NULL;
+ * - return the document inserted into the array.
+ * Note: If multiple groups of parameters are passed in, the parameter
subscripts of the latter groups
+ * need to be based on the document subscripts after the previous group of
parameters are updated.
+ */
+@TransformFunction(names = {"json_array_insert"})
+public class JsonArrayInsertFunction implements ValueParser {
+
+ private ValueParser jsonDocParser;
+ private List<ValueParser> pathValuePairsParser;
+
+ public JsonArrayInsertFunction(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 jsonArrayInsert(jsonDocObj.toString(), pathValuePairs);
+ }
+
+ private String jsonArrayInsert(String jsonDoc, ArrayList<Object>
pathValuePairs) {
+ if (jsonDoc == null || pathValuePairs == null || pathValuePairs.size()
% 2 != 0) {
+ return null;
+ }
+
+ Object jsonObject = 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.endsWith("]")) {
+ throw new IllegalArgumentException("Path must end with an
array index: " + path);
+ }
+
+ // Find the parent path
+ String parentPath = path.substring(0, path.lastIndexOf('['));
+ Object parentNode = JSONPath.eval(jsonObject, parentPath);
+
+ if (parentNode instanceof JSONArray) {
+ // If the parent path is an array, perform the insert operation
+ insertIntoArray((JSONArray) parentNode, path, value);
+ } else if (parentNode instanceof JSONObject) {
+ // If the parent path is an object, try inserting it into the
array inside the object
+ String arrayIndexPart = path.substring(path.lastIndexOf('['),
path.lastIndexOf(']') + 1);
+ handleArrayInsertionInObject((JSONObject) parentNode,
arrayIndexPart, value);
+ } else {
+ throw new IllegalArgumentException("Invalid path or target
node is not an array or object: " + path);
+ }
+ }
+
+ return JSON.toJSONString(jsonObject);
+ }
+
+ private void insertIntoArray(JSONArray array, String path, Object value) {
+ String indexPart = path.substring(path.lastIndexOf('[') + 1,
path.lastIndexOf(']'));
+ int index = Integer.parseInt(indexPart);
+
+ // If the index exceeds the length of the array, insert at the end
+ if (index >= array.size()) {
+ array.add(value);
+ } else {
+ array.add(index, value);
+ }
+ }
+
+ private void handleArrayInsertionInObject(JSONObject jsonObject, String
arrayPart, Object value) {
+ String arrayField = arrayPart.substring(1, arrayPart.length() - 1);
+ JSONArray array = jsonObject.getJSONArray(arrayField);
+ if (array != null) {
+ insertIntoArray(array, arrayPart, value);
+ }
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestJsonArrayInsertFunction.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestJsonArrayInsertFunction.java
new file mode 100644
index 0000000000..82f30282e2
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestJsonArrayInsertFunction.java
@@ -0,0 +1,89 @@
+/*
+ * 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.string;
+
+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 TestJsonArrayInsertFunction extends
AbstractFunctionStringTestBase {
+
+ @Test
+ public void testJsonArrayInsertFunction() throws Exception {
+ String transformSql = null, data = null;
+ TransformConfig config = null;
+ TransformProcessor<String, String> processor = null;
+ List<String> output = null;
+
+ transformSql = "select json_array_insert(string1,string2,string3) from
source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case1: json_array_append(["a", {"b": [1, 2]}, [3, 4]], $[1], x)
+ data = "[\\\"a\\\", {\\\"b\\\": [1, 2]}, [3, 4]]|$[1]|x|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[\"a\",\"x\",{\"b\":[1,2]},[3,4]]",
output.get(0));
+
+ // case2: json_array_append(["a", {"b": [1, 2]}, [3, 4]], $[100], x)
+ data = "[\\\"a\\\", {\\\"b\\\": [1, 2]}, [3, 4]]|$[100]|x|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[\"a\",{\"b\":[1,2]},[3,4],\"x\"]",
output.get(0));
+
+ // case3: json_array_append(["a", {"b": [1, 2]}, [3, 4]], $[100], x)
+ data = "[\\\"a\\\", {\\\"b\\\": [1, 2]}, [3, 4]]|$[1].b[0]|x|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[\"a\",{\"b\":[\"x\",1,2]},[3,4]]",
output.get(0));
+
+ // case4: json_array_append(["a", {"b": [1, 2]}, [3, 4]], $[100], y)
+ data = "[\\\"a\\\", {\\\"b\\\": [1, 2]}, [3, 4]]|$[2][1]|y|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[\"a\",{\"b\":[1,2]},[3,\"y\",4]]",
output.get(0));
+
+ transformSql = "select
json_array_insert(string1,string2,string3,numeric1,numeric2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case5: json_array_append(["a", {"b": [1, 2]}, [3, 4]], "$[0]", "x",
"$[2][1]", "y")
+ data = "[\\\"a\\\", {\\\"b\\\": [1, 2]}, [3, 4]]|$[0]|x|$[2][1]|y";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[\"x\",\"a\",{\"b\":[1,2]},[3,4]]",
output.get(0));
+
+ // case6: json_array_append(["a", {"b": [1, 2]}, [3, 4]], "$[0]", "x",
"$[3][1]", "y")
+ data = "[\\\"a\\\", {\\\"b\\\": [1, 2]}, [3, 4]]|$[0]|x|$[3][1]|y";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[\"x\",\"a\",{\"b\":[1,2]},[3,\"y\",4]]",
output.get(0));
+
+ }
+}
