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new 5aa37cd63c [INLONG-11302][SDK] Transform SQL supports "JSON_INSERT"
function (#11343)
5aa37cd63c is described below
commit 5aa37cd63c25850b924b1fa24b339fb52562da0e
Author: Zkplo <[email protected]>
AuthorDate: Tue Oct 15 17:35:34 2024 +0800
[INLONG-11302][SDK] Transform SQL supports "JSON_INSERT" function (#11343)
---
.../process/function/json/JsonInsertFunction.java | 264 +++++++++++++++++++++
.../function/json/TestJsonInsertFunction.java | 67 ++++++
2 files changed, 331 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/json/JsonInsertFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/json/JsonInsertFunction.java
new file mode 100644
index 0000000000..69b15d6c3c
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/json/JsonInsertFunction.java
@@ -0,0 +1,264 @@
+/*
+ * 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.JSONArray;
+import com.alibaba.fastjson.JSONObject;
+import net.sf.jsqlparser.expression.Expression;
+import net.sf.jsqlparser.expression.Function;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * JsonInsertFunction -> JSON_INSERT(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 data into 'json_doc'.
+ */
+@TransformFunction(names = {
+ "json_insert"}, 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 data into 'json_doc'."
+ }, examples = {
+ "json_insert({\"a\": {\"b\": [1, 2]}, \"c\": [3, 4]},
$.c[1][1], \"2\", \"$.c[1][1][5]\", \"1\") = " +
+ "{\"a\":{\"b\":[1,2]},\"c\":[3,[4,[\"2\",\"1\"]]]}"
+ })
+public class JsonInsertFunction implements ValueParser {
+
+ private final ValueParser jsonDocParser;
+ private final List<ValueParser> pathValuePairsParser;
+
+ public JsonInsertFunction(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 jsonInsert(jsonDocObj.toString(), pathValuePairs);
+ }
+
+ private static String jsonInsert(String json, ArrayList<Object>
pathValuePairs) {
+ if (json == null || pathValuePairs == null || pathValuePairs.size() %
2 != 0) {
+ return null;
+ }
+
+ JSONObject jsonObject;
+ try {
+ jsonObject = JSON.parseObject(json);
+ } catch (Exception e) {
+ // Invalid JSON document
+ return null;
+ }
+
+ for (int i = 0; i < pathValuePairs.size(); i += 2) {
+ String path = (String) pathValuePairs.get(i);
+ Object value = pathValuePairs.get(i + 1);
+
+ if (path == null || value == null) {
+ return null;
+ }
+
+ if (path.contains("*") || path.contains("**")) {
+ throw new IllegalArgumentException("Invalid path expression: "
+ path);
+ }
+
+ List<Object> tokens = parsePath(path);
+ if (tokens.isEmpty()) {
+ continue;
+ }
+
+ Object current = jsonObject;
+ Object parent = null, currentToken = null;
+
+ for (int j = 0; j < tokens.size() - 1; j++) {
+ Object token = tokens.get(j);
+ parent = current;
+ currentToken = token;
+
+ if (token instanceof String) {
+ String key = (String) token;
+ if (!(current instanceof JSONObject)) {
+ JSONObject newObj = new JSONObject();
+ if (parent instanceof JSONObject) {
+ ((JSONObject) parent).put((String) currentToken,
newObj);
+ } else if (parent instanceof JSONArray) {
+ ((JSONArray) parent).set((Integer) currentToken,
newObj);
+ }
+ current = newObj;
+ }
+ JSONObject jsonObj = (JSONObject) current;
+
+ Object next = jsonObj.get(key);
+ if (next == null) {
+ Object nextToken = tokens.get(j + 1);
+ next = nextToken instanceof Integer ? new JSONArray()
: new JSONObject();
+ jsonObj.put(key, next);
+ }
+ current = next;
+ } else if (token instanceof Integer) {
+ int index = (Integer) token;
+ if (!(current instanceof JSONArray)) {
+ JSONArray newArr = new JSONArray();
+ newArr.add(current);
+ if (parent instanceof JSONObject) {
+ ((JSONObject) parent).put((String) currentToken,
newArr);
+ } else if (parent instanceof JSONArray) {
+ ((JSONArray) parent).set((Integer) currentToken,
newArr);
+ }
+ current = newArr;
+ }
+ JSONArray jsonArr = (JSONArray) current;
+ if (jsonArr.size() <= index) {
+ index = jsonArr.size();
+ }
+ Object next = jsonArr.get(index);
+ if (next == null) {
+ Object nextToken = tokens.get(j + 1);
+ next = nextToken instanceof Integer ? new JSONArray()
: new JSONObject();
+ jsonArr.set(index, next);
+ }
+ current = next;
+ }
+ }
+
+ Object lastToken = tokens.get(tokens.size() - 1);
+ if (lastToken instanceof String) {
+ String key = (String) lastToken;
+ if (!(current instanceof JSONObject)) {
+ JSONObject newObj = new JSONObject();
+ if (parent instanceof JSONObject) {
+ ((JSONObject) parent).put((String) currentToken,
newObj);
+ } else if (parent instanceof JSONArray) {
+ ((JSONArray) parent).set((Integer) currentToken,
newObj);
+ }
+ current = newObj;
+ }
+ JSONObject jsonObj = (JSONObject) current;
+ if (!jsonObj.containsKey(key)) {
+ jsonObj.put(key, parseValue(value));
+ }
+ } else if (lastToken instanceof Integer) {
+ int index = (Integer) lastToken;
+ if (!(current instanceof JSONArray)) {
+ JSONArray newArr = new JSONArray();
+ newArr.add(current);
+ if (parent instanceof JSONObject) {
+ ((JSONObject) parent).put((String) currentToken,
newArr);
+ } else if (parent instanceof JSONArray) {
+ ((JSONArray) parent).set((Integer) currentToken,
newArr);
+ }
+ current = newArr;
+ }
+ JSONArray jsonArr = (JSONArray) current;
+ if (index >= jsonArr.size() || jsonArr.get(index) == null) {
+ if (jsonArr.size() <= index) {
+ index = jsonArr.size();
+ }
+ jsonArr.set(index, parseValue(value));
+ }
+ }
+ }
+
+ return jsonObject.toJSONString();
+ }
+
+ private static Object parseValue(Object value) {
+ if (value instanceof String) {
+ String str = (String) value;
+ try {
+ // Try to parse as JSON
+ Object json = JSON.parse(str);
+ if (json instanceof JSONObject || json instanceof JSONArray) {
+ return json;
+ }
+ } catch (Exception ignored) {
+ // Not a JSON string
+ }
+ }
+ return value;
+ }
+
+ private static List<Object> parsePath(String path) {
+ if (path == null || !path.startsWith("$")) {
+ throw new IllegalArgumentException("Invalid path expression: " +
path);
+ }
+
+ List<Object> tokens = new ArrayList<>();
+ int i = 1; // Skip the '$'
+ int len = path.length();
+
+ while (i < len) {
+ char c = path.charAt(i);
+ if (c == '.') {
+ i++;
+ int start = i;
+ while (i < len && path.charAt(i) != '.' && path.charAt(i) !=
'[') {
+ i++;
+ }
+ if (start == i) {
+ throw new IllegalArgumentException("Invalid path
expression: " + path);
+ }
+ String key = path.substring(start, i);
+ tokens.add(key);
+ } else if (c == '[') {
+ i++;
+ int start = i;
+ while (i < len && path.charAt(i) != ']') {
+ i++;
+ }
+ if (i == len || path.charAt(i) != ']') {
+ throw new IllegalArgumentException("Invalid path
expression: " + path);
+ }
+ String indexStr = path.substring(start, i);
+ i++; // Skip ']'
+ try {
+ int index = Integer.parseInt(indexStr);
+ tokens.add(index);
+ } catch (NumberFormatException e) {
+ throw new IllegalArgumentException("Invalid array index in
path: " + path);
+ }
+ } else {
+ throw new IllegalArgumentException("Invalid path expression: "
+ path);
+ }
+ }
+ return tokens;
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/json/TestJsonInsertFunction.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/json/TestJsonInsertFunction.java
new file mode 100644
index 0000000000..498093107d
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/json/TestJsonInsertFunction.java
@@ -0,0 +1,67 @@
+/*
+ * 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.apache.inlong.sdk.transform.process.function.string.AbstractFunctionStringTestBase;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class TestJsonInsertFunction extends AbstractFunctionStringTestBase {
+
+ @Test
+ public void testJsonInsertFunction() throws Exception {
+ String transformSql = null, data = null;
+ TransformConfig config = null;
+ TransformProcessor<String, String> processor = null;
+ List<String> output = null;
+
+ String json_doc = "{\\\"a\\\": {\\\"b\\\": [1, 2]}, \\\"c\\\": [3,
4]}";
+ transformSql = "select
json_insert(string1,string2,string3,numeric1,numeric2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case1: json_insert({"a": {"b": [1, 2]}, "c": [3, 4]}, $.c[1][1], 2,
"$.c[1][1][5]", 1)
+ data = json_doc + "|$.c[1][1]|2|$.c[1][1][5]|1";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+
Assert.assertEquals("result={\"a\":{\"b\":[1,2]},\"c\":[3,[4,[\"2\",\"1\"]]]}",
output.get(0));
+
+ // case2: json_insert({"a": {"b": [1, 2]}, "c": [3, 4]}, $.c[1][1], 2,
"$.c[1][1]", 1)
+ data = json_doc + "|$.c[1][1]|2|$.c[1][1]|1";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+
Assert.assertEquals("result={\"a\":{\"b\":[1,2]},\"c\":[3,[4,\"2\"]]}",
output.get(0));
+
+ // case3: json_insert({"a": {"b": [1, 2]}, "c": [3, 4]}, "$.c", 2,
"$.d", 1)
+ data = json_doc + "|$.c|2|$.d|1";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+
Assert.assertEquals("result={\"a\":{\"b\":[1,2]},\"c\":[3,4],\"d\":\"1\"}",
output.get(0));
+
+ }
+}
