[INLONG-11241][SDK] Transform support ARRAY() function

inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/ArrayFunction.java

@@ -0,0 +1,64 @@
+/*
+ * 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 net.sf.jsqlparser.expression.Expression;
+import net.sf.jsqlparser.expression.Function;
+
+import java.util.ArrayList;
+import java.util.List;
+/**
+ * ArrayFunction
+ * description: ARRAY(ANY1, ANY2, ...)--Returns an array created from a list of values (value1, value2, …).
+ * for example: array('he',7,'xxd')--return [he, 7, xxd]
+ * array(array('he',5),'xxd')--return [[he, 5], xxd]
+ * array(array('he',5),array('',''))--return [[he, 5], [, ]]
+ */
+@TransformFunction(names = {"array"})
+public class ArrayFunction implements ValueParser {
+
+ private List<ValueParser> parserList;
+
+ public ArrayFunction(Function expr) {
+ if (expr.getParameters() == null) {
+ this.parserList = new ArrayList<>();
+ } else {
+ List<Expression> params = expr.getParameters().getExpressions();
+ parserList = new ArrayList<>(params.size());
+ for (Expression param : params) {
+ ValueParser node = OperatorTools.buildParser(param);
+ parserList.add(node);
+ }
+ }
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ ArrayList<Object> res = new ArrayList<>();
+ for (ValueParser valueParser : parserList) {
+ Object parseObj = valueParser.parse(sourceData, rowIndex, context);
+ res.add(parseObj);
+ }
+ return res;
+ }
+}

inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestArrayFunction.java

@@ -0,0 +1,101 @@
+/*
+ * 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 TestArrayFunction extends AbstractFunctionStringTestBase {
+
+ @Test
+ public void testArrayFunction() throws Exception {
+ String transformSql = null, data = null;
+ TransformConfig config = null;
+ TransformProcessor<String, String> processor = null;
+ List<String> output = null;
+
+ transformSql = "select array(string1,numeric1,string2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config, SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case1: array('he',7,'xxd')
+ data = "he|xxd|cloud|7|3|3";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[he, 7, xxd]", output.get(0));
+
+ // case2: array('he', 1, '')
+ data = "he||cloud|1|3|3";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[he, 1, ]", output.get(0));
+
+ // case4: array('he',-1,'xxd')
+ data = "he|xxd|cloud|-1|3|3";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[he, -1, xxd]", output.get(0));
+
+ transformSql = "select array(array(string1,numeric1),string2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config, SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case5: array(array('he',5),'xxd')
+ data = "he|xxd|cloud|5|3|3";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[[he, 5], xxd]", output.get(0));
+
+ // case5: array(array('he',5),'')
+ data = "he||cloud|5|3|3";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[[he, 5], ]", output.get(0));
+
+ transformSql = "select array(array(string1,numeric1),array(string2,string3)) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config, SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case6: array(array('he',5),array('xxd','cloud'))
+ data = "he|xxd|cloud|5|3|3";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[[he, 5], [xxd, cloud]]", output.get(0));
+
+ // case6: array(array('he',5),array('',''))
+ data = "he|||5|3|3";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=[[he, 5], [, ]]", output.get(0));
+ }
+
+}