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new 58fd7ddd85 [INLONG-11300][SDK] Transform SQL supports
"JSON_ARRAY_APPEND" function (#11310)
58fd7ddd85 is described below
commit 58fd7ddd85467658120f995a82afc68f5583fac6
Author: Zkplo <[email protected]>
AuthorDate: Thu Oct 10 11:34:00 2024 +0800
[INLONG-11300][SDK] Transform SQL supports "JSON_ARRAY_APPEND" function
(#11310)
Co-authored-by: ZKpLo <[email protected]>
---
.../process/function/JsonArrayAppendFunction.java | 127 +++++++++++++++++++++
.../string/TestJsonArrayAppendFunction.java | 93 +++++++++++++++
2 files changed, 220 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/JsonArrayAppendFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/JsonArrayAppendFunction.java
new file mode 100644
index 0000000000..58c144c283
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/JsonArrayAppendFunction.java
@@ -0,0 +1,127 @@
+/*
+ * 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.JSONPath;
+import net.sf.jsqlparser.expression.Expression;
+import net.sf.jsqlparser.expression.Function;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * JsonArrayAppendFunction -> JSON_ARRAY_APPEND(json_doc, path, val[,
path, val] ...)
+ * description:
+ * - return NULL if any argument is NULL.
+ * - return the result of appends values to the end of the indicated arrays
within a JSON document.
+ */
+@TransformFunction(names = {"json_array_append"})
+public class JsonArrayAppendFunction implements ValueParser {
+
+ private ValueParser jsonDocParser;
+ private List<ValueParser> pathValuePairsParser;
+
+ public JsonArrayAppendFunction(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 jsonArrayAppend(jsonDocObj.toString(), pathValuePairs);
+ }
+
+ public static String jsonArrayAppend(String jsonDoc, ArrayList<Object>
pathValuePairs) {
+ if (jsonDoc == null || pathValuePairs == null || pathValuePairs.size()
% 2 != 0) {
+ return null;
+ }
+
+ Object jsonObject;
+ try {
+ jsonObject = JSON.parse(jsonDoc);
+ } catch (Exception e) {
+ throw new IllegalArgumentException("Invalid JSON document", e);
+ }
+
+ // Process each pair of path and val
+ for (int i = 0; i < pathValuePairs.size(); i += 2) {
+ String path = (String) pathValuePairs.get(i);
+ Object value = pathValuePairs.get(i + 1);
+
+ // Attempt to append a value to the array pointed to by the
specified path
+ try {
+ jsonObject = appendValueToArray(jsonObject, path, value);
+ } catch (Exception e) {
+ throw new IllegalArgumentException("Error processing path: " +
path, e);
+ }
+ }
+
+ return JSON.toJSONString(jsonObject);
+ }
+
+ /**
+ * Append values to an array at a specified path
+ *
+ * @param jsonObject The object parsed by jsonDoc
+ * @param path path
+ * @param value value
+ */
+ private static Object appendValueToArray(Object jsonObject, String path,
Object value) {
+ Object targetNode = JSONPath.eval(jsonObject, path);
+
+ if (targetNode == null) {
+ throw new IllegalArgumentException("Target path does not exist.");
+ }
+
+ // If it is already an array type, simply append it
+ if (targetNode instanceof JSONArray) {
+ JSONArray array = (JSONArray) targetNode;
+ array.add(value);
+ }
+ // If it is a non array type, convert it to an array and append it
+ else {
+ JSONArray newArray = new JSONArray();
+ newArray.add(targetNode);
+ newArray.add(value);
+ if ("$".equals(path)) {
+ return newArray;
+ }
+ JSONPath.set(jsonObject, path, newArray);
+ }
+ return jsonObject;
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestJsonArrayAppendFunction.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestJsonArrayAppendFunction.java
new file mode 100644
index 0000000000..84d3e72882
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestJsonArrayAppendFunction.java
@@ -0,0 +1,93 @@
+/*
+ * 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 TestJsonArrayAppendFunction extends
AbstractFunctionStringTestBase {
+
+ @Test
+ public void testJsonArrayAppendFunction() throws Exception {
+ String transformSql = null, data = null;
+ TransformConfig config = null;
+ TransformProcessor<String, String> processor = null;
+ List<String> output = null;
+
+ transformSql = "select json_array_append(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", "c"], "d"], $[1],1)
+ data = "[\\\"a\\\",[\\\"b\\\",\\\"c\\\"],\\\"d\\\"]|$[1]|1|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[\"a\",[\"b\",\"c\",\"1\"],\"d\"]",
output.get(0));
+
+ // case2: json_array_append(["a", ["b", "c"], "d"], $[0],2)
+ data = "[\\\"a\\\",[\\\"b\\\",\\\"c\\\"],\\\"d\\\"]|$[0]|2|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[[\"a\",\"2\"],[\"b\",\"c\"],\"d\"]",
output.get(0));
+
+ // case3: json_array_append(["a", ["b", "c"], "d"],$[1][0],3)
+ data = "[\\\"a\\\",[\\\"b\\\",\\\"c\\\"],\\\"d\\\"]|$[1][0]|3|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[\"a\",[[\"b\",\"3\"],\"c\"],\"d\"]",
output.get(0));
+
+ // case4: json_array_append("{\"a\": 1, \"b\": [2, 3], \"c\":
4}",$.b,"x")
+ data = "{\\\"a\\\": 1, \\\"b\\\": [2, 3], \\\"c\\\": 4}|$.b|x|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result={\"a\":1,\"b\":[2,3,\"x\"],\"c\":4}",
output.get(0));
+
+ // case5: json_array_append("{\"a\": 1, \"b\": [2, 3], \"c\":
4}",$.c,"y")
+ data = "{\\\"a\\\": 1, \\\"b\\\": [2, 3], \\\"c\\\": 4}|$.c|y|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result={\"a\":1,\"b\":[2,3],\"c\":[4,\"y\"]}",
output.get(0));
+
+ // case6: json_array_append("{"a": 1}",$,"z")
+ data = "{\\\"a\\\": 1}|$|z|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[{\"a\":1},\"z\"]", output.get(0));
+
+ transformSql = "select
json_array_append(string1,string2,string3,numeric1,numeric2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ // case7: json_array_append(["a", ["b", "c"], "d"],$[0],2,$[1],3)
+ data = "[\\\"a\\\", [\\\"b\\\", \\\"c\\\"], \\\"d\\\"]|$[0]|2|$[1]|3";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+
Assert.assertEquals("result=[[\"a\",\"2\"],[\"b\",\"c\",\"3\"],\"d\"]",
output.get(0));
+ }
+}
