This is an automated email from the ASF dual-hosted git repository.
luchunliang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/inlong.git
The following commit(s) were added to refs/heads/master by this push:
new 3e7f81d41c [INLONG-10971][SDK] Transform support INSERT function
(#10972)
3e7f81d41c is described below
commit 3e7f81d41c0e1ab8294d93b374e54515d0b7936b
Author: Xincheng Huang <60057611+ying-...@users.noreply.github.com>
AuthorDate: Tue Sep 3 10:25:52 2024 +0800
[INLONG-10971][SDK] Transform support INSERT function (#10972)
---
.../transform/process/function/InsertFunction.java | 101 +++++++++++++++++++++
.../TestTransformStringFunctionsProcessor.java | 34 +++++++
2 files changed, 135 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/InsertFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/InsertFunction.java
new file mode 100644
index 0000000000..3473bc9d79
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/InsertFunction.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;
+
+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;
+/**
+ * InsertFunction
+ *
+ * Description:
+ * Returns a string where a specified substring is replaced by another string,
starting at a given position and for a specified length.
+ * If the position is out of the string's bounds, the original string is
returned.
+ * If the length exceeds the remaining length of the string from the given
position, the replacement continues to the end of the string.
+ * If any argument is null, the function returns null.
+ *
+ * Arguments:
+ * - str: The original string.
+ * - pos: The position to start the replacement (1-based index).
+ * - len: The number of characters to replace.
+ * - newstr: The string to insert.
+ *
+ * Examples:
+ * - INSERT('12345678', 3, 4, 'word') = '12word78'
+ * - INSERT('12345678', -1, 4, 'word') = '12345678'
+ * - INSERT('12345678', 3, 100, 'word') = '12word'
+ */
+@TransformFunction(names = {"insert"})
+public class InsertFunction implements ValueParser {
+
+ private ValueParser strParser;
+ private ValueParser posParser;
+ private ValueParser lenParser;
+ private ValueParser newStrParser;
+
+ public InsertFunction(Function expr) {
+ List<Expression> expressions = expr.getParameters().getExpressions();
+ strParser = OperatorTools.buildParser(expressions.get(0));
+ posParser = OperatorTools.buildParser(expressions.get(1));
+ lenParser = OperatorTools.buildParser(expressions.get(2));
+ newStrParser = OperatorTools.buildParser(expressions.get(3));
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ Object strObject = strParser.parse(sourceData, rowIndex, context);
+ Object posObject = posParser.parse(sourceData, rowIndex, context);
+ Object lenObject = lenParser.parse(sourceData, rowIndex, context);
+ Object newStrObject = newStrParser.parse(sourceData, rowIndex,
context);
+
+ if (strObject == null || posObject == null || lenObject == null ||
newStrObject == null) {
+ return null;
+ }
+
+ String str = OperatorTools.parseString(strObject);
+ int pos = OperatorTools.parseBigDecimal(posObject).intValue();
+ int len = OperatorTools.parseBigDecimal(lenObject).intValue();
+ String newStr = OperatorTools.parseString(newStrObject);
+
+ if (str == null || newStr == null) {
+ return null;
+ }
+
+ if (pos < 1 || pos > str.length()) {
+ return str;
+ }
+
+ int startIndex = pos - 1;
+ int endIndex = Math.min(startIndex + len, str.length());
+
+ StringBuilder result = new StringBuilder();
+ result.append(str, 0, startIndex);
+ result.append(newStr);
+ if (endIndex < str.length()) {
+ result.append(str, endIndex, str.length());
+ }
+
+ return result.toString();
+ }
+}
\ No newline at end of file
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformStringFunctionsProcessor.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformStringFunctionsProcessor.java
index 1451194607..a3099d09f2 100644
---
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformStringFunctionsProcessor.java
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformStringFunctionsProcessor.java
@@ -690,4 +690,38 @@ public class TestTransformStringFunctionsProcessor {
Assert.assertEquals(output3.get(0), "result=Apache Inlong");
}
+ @Test
+ public void testInsertFunction() throws Exception {
+ String transformSql1 = "select insert(string1, numeric1, numeric2,
string2) from source";
+ TransformConfig config1 = new TransformConfig(transformSql1);
+ TransformProcessor<String, String> processor1 = TransformProcessor
+ .create(config1,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case1: insert('12345678', 3, 4, 'word') -> '12word78'
+ List<String> output1 =
processor1.transform("12345678|word|cloud|3|4|0", new HashMap<>());
+ Assert.assertEquals(1, output1.size());
+ Assert.assertEquals("result=12word78", output1.get(0));
+
+ // case2: insert('12345678', -1, 4, 'word') -> '12345678'
+ List<String> output2 =
processor1.transform("12345678|word|cloud|-1|4|0", new HashMap<>());
+ Assert.assertEquals(1, output2.size());
+ Assert.assertEquals("result=12345678", output2.get(0));
+
+ // case3: insert('12345678', 3, 100, 'word') -> '12word'
+ List<String> output3 =
processor1.transform("12345678|word|cloud|3|100|0", new HashMap<>());
+ Assert.assertEquals(1, output3.size());
+ Assert.assertEquals("result=12word", output3.get(0));
+
+ // case4: insert('', 3, 4, 'word') -> ''
+ List<String> output4 = processor1.transform("|word|cloud|3|4|0", new
HashMap<>());
+ Assert.assertEquals(1, output4.size());
+ Assert.assertEquals("result=", output4.get(0));
+
+ // case5: insert('12345678', 3, 4, '') -> '1278'
+ List<String> output5 = processor1.transform("12345678||cloud|3|4|0",
new HashMap<>());
+ Assert.assertEquals(1, output5.size());
+ Assert.assertEquals("result=1278", output5.get(0));
+ }
+
}
