[INLONG-10816][SDK] Transform support Replace function.

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

@@ -0,0 +1,57 @@
+/*
+ * 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.List;
+
+/**
+ * ReplaceFunction
+ * description: replace(s, s1, s2)--replace string s1 in string s with string s2.
+ */
+public class ReplaceFunction implements ValueParser {
+
+    private ValueParser stringParser;
+    private ValueParser targetParser;
+    private ValueParser replacementParser;
+
+    public ReplaceFunction(Function expr) {
+        List<Expression> expressions = expr.getParameters().getExpressions();
+        stringParser = OperatorTools.buildParser(expressions.get(0));
+        targetParser = OperatorTools.buildParser(expressions.get(1));
+        replacementParser = OperatorTools.buildParser(expressions.get(2));
+    }
+
+    @Override
+    public Object parse(SourceData sourceData, int rowIndex, Context context) {
+        Object strObj = stringParser.parse(sourceData, rowIndex, context);
+        Object targetObj = targetParser.parse(sourceData, rowIndex, context);
+        Object replacementObj = replacementParser.parse(sourceData, rowIndex, context);
+        String str = OperatorTools.parseString(strObj);
+        String target = OperatorTools.parseString(targetObj);
+        String replacement = OperatorTools.parseString(replacementObj);
+        return str.replace(target, replacement);
+    }
+}

inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/operator/OperatorTools.java

@@ -37,6 +37,7 @@
 import org.apache.inlong.sdk.transform.process.function.ModuloFunction;
 import org.apache.inlong.sdk.transform.process.function.NowFunction;
 import org.apache.inlong.sdk.transform.process.function.PowerFunction;
+import org.apache.inlong.sdk.transform.process.function.ReplaceFunction;
 import org.apache.inlong.sdk.transform.process.function.ReplicateFunction;
 import org.apache.inlong.sdk.transform.process.function.ReverseFunction;
 import org.apache.inlong.sdk.transform.process.function.RoundFunction;
@@ -156,6 +157,7 @@ public class OperatorTools {
         functionMap.put("mod", ModuloFunction::new);
         functionMap.put("to_base64", ToBase64Function::new);
         functionMap.put("length", LengthFunction::new);
+        functionMap.put("replace", ReplaceFunction::new);
     }
 
     public static ExpressionOperator buildOperator(Expression expr) {

inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformStringFunctionsProcessor.java

@@ -255,4 +255,40 @@ public void testLengthFunction() throws Exception {
         Assert.assertEquals(1, output1.size());
         Assert.assertEquals("result=null", output1.get(0));
     }
+    @Test
+    public void testReplaceFunction() throws Exception {
+        String transformSql = "select replace(string1, string2, string3) from source";
+        TransformConfig config = new TransformConfig(transformSql);
+        TransformProcessor<String, String> processor = TransformProcessor
+                .create(config, SourceDecoderFactory.createCsvDecoder(csvSource),
+                        SinkEncoderFactory.createKvEncoder(kvSink));
+        // case1: replace('hooray', 'oray', 'lly')
+        List<String> output1 = processor.transform("hooray|oray|lly", new HashMap<>());
+        Assert.assertEquals(1, output1.size());
+        Assert.assertEquals(output1.get(0), "result=holly");
+        // case2: replace('hooray', 'hook', 'hoor')
+        List<String> output2 = processor.transform("hooray|hook|hoor", new HashMap<>());
+        Assert.assertEquals(1, output2.size());
+        Assert.assertEquals(output2.get(0), "result=hooray");
+        // case3: replace('Hello World', 'World', '')
+        List<String> output3 = processor.transform("Hello World|World|", new HashMap<>());
+        Assert.assertEquals(1, output3.size());
+        Assert.assertEquals(output3.get(0), "result=Hello ");
+        // case4: replace('Hello World', '', 'J')
+        List<String> output4 = processor.transform("Hello World||J", new HashMap<>());
+        Assert.assertEquals(1, output4.size());
+        Assert.assertEquals(output4.get(0), "result=JHJeJlJlJoJ JWJoJrJlJdJ");
+        // case5: replace('', '', '')
+        List<String> output5 = processor.transform("||", new HashMap<>());
+        Assert.assertEquals(1, output5.size());
+        Assert.assertEquals(output5.get(0), "result=");
+        // case6: replace('abababab', 'ab', 'cd')
+        List<String> output6 = processor.transform("abababab|ab|cd", new HashMap<>());
+        Assert.assertEquals(1, output6.size());
+        Assert.assertEquals(output6.get(0), "result=cdcdcdcd");
+        // case7: replace('aaa', 'aa', 'd')
+        List<String> output7 = processor.transform("aaa|aa|d", new HashMap<>());
+        Assert.assertEquals(1, output7.size());
+        Assert.assertEquals(output7.get(0), "result=da");
+    }
 }