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new 1df16a1674 [INLONG-11168][SDK] Transform support
REGEXP_SPLIT_TO_ARRAY() function (#11173)
1df16a1674 is described below
commit 1df16a16744c7838147cdfda4e5e815fa53a3db3
Author: emptyOVO <[email protected]>
AuthorDate: Tue Sep 24 09:51:06 2024 +0800
[INLONG-11168][SDK] Transform support REGEXP_SPLIT_TO_ARRAY() function
(#11173)
---
.../function/RegexpSplitToArrayFunction.java | 101 +++++++++++++++++++++
.../string/TestRegexpSplitToArrayFunction.java | 90 ++++++++++++++++++
2 files changed, 191 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/RegexpSplitToArrayFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/RegexpSplitToArrayFunction.java
new file mode 100644
index 0000000000..81df7b561f
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/RegexpSplitToArrayFunction.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.Arrays;
+import java.util.List;
+import java.util.regex.Pattern;
+
+/**
+ * RegexpSplitToArrayFunction
+ * description: REGEXP_SPLIT_TO_ARRAY( string, pattern text|, flags text l) →
text[]
+ * Splits string using a POslX regular expression as the
delimiter, producing an array of results
+ * parameters: 1) source_string: the string to be matched
+ * 2) pattern: POSIX regular expression for matching
+ * 3) flags: one or more characters that control the behavior of a
function,
+ * 'g' flag can be used when we want to match all the
substrings that occur,
+ * 'i' flag to ignore case for matching,
+ * 'x' flag to extend syntax (ignoring whitespace and comments
in regular expressions),
+ * 'm' and 'n' flag allows regular expressions to match across
multiple lines
+ * for example: regexp_split_to_array("hello world","\s+")--return {hello,
world}
+ */
+@TransformFunction(names = {"regexp_split_to_array"})
+public class RegexpSplitToArrayFunction implements ValueParser {
+
+ private ValueParser inputParser;
+
+ private ValueParser patternParser;
+
+ private ValueParser flagParser;
+
+ public RegexpSplitToArrayFunction(Function expr) {
+ if (expr.getParameters() != null) {
+ List<Expression> expressions =
expr.getParameters().getExpressions();
+ if (expressions != null) {
+ inputParser = OperatorTools.buildParser(expressions.get(0));
+ patternParser = OperatorTools.buildParser(expressions.get(1));
+ if (expressions.size() == 3) {
+ flagParser = OperatorTools.buildParser(expressions.get(2));
+ }
+ }
+ }
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ if (inputParser == null || patternParser == null) {
+ return null;
+ }
+ String inputString =
OperatorTools.parseString(inputParser.parse(sourceData, rowIndex, context));
+ String patternString =
OperatorTools.parseString(patternParser.parse(sourceData, rowIndex, context));
+ String flagString = "";
+ if (flagParser != null) {
+ flagString =
OperatorTools.parseString(flagParser.parse(sourceData, rowIndex, context));
+ }
+ return regexpSplitToArray(inputString, patternString, flagString);
+ }
+
+ private List<String> regexpSplitToArray(String inputString, String
patternString, String flagString) {
+ int regexFlags = 0;
+
+ if (flagString != null) {
+ if (flagString.contains("i")) {
+ regexFlags |= Pattern.CASE_INSENSITIVE;
+ }
+ if (flagString.contains("m") || flagString.contains("n")) {
+ regexFlags |= Pattern.MULTILINE;
+ }
+ if (flagString.contains("s")) {
+ regexFlags |= Pattern.DOTALL;
+ }
+ if (flagString.contains("x")) {
+ regexFlags |= Pattern.COMMENTS;
+ }
+ }
+ Pattern pattern = Pattern.compile(patternString, regexFlags);
+ return Arrays.asList(pattern.split(inputString));
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestRegexpSplitToArrayFunction.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestRegexpSplitToArrayFunction.java
new file mode 100644
index 0000000000..082e726bd2
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestRegexpSplitToArrayFunction.java
@@ -0,0 +1,90 @@
+/*
+ * 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 TestRegexpSplitToArrayFunction extends
AbstractFunctionStringTestBase {
+
+ @Test
+ public void testRegexpSplitToArrayFunction() throws Exception {
+ String transformSql1 = "select regexp_split_to_array(string1,string2)
from source";
+ TransformConfig config1 = new TransformConfig(transformSql1);
+ TransformProcessor<String, String> processor1 = TransformProcessor
+ .create(config1,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ // case1: regexp_split_to_array("hello,world", "\s+")
+ List<String> output1 =
processor1.transform("hello,world|\\s+|5|2|1|3", new HashMap<>());
+ Assert.assertEquals(1, output1.size());
+ Assert.assertEquals(output1.get(0), "result=[hello,world]");
+ String transformSql2 = "select regexp_split_to_array(string1,string2)
from source";
+ TransformConfig config2 = new TransformConfig(transformSql2);
+ TransformProcessor<String, String> processor2 = TransformProcessor
+ .create(config2,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ // case2: regexp_split_to_array("User: Alice, ID: 12345", ":")
+ List<String> output2 =
+ processor2.transform("User: Alice, ID: 12345|:|5|2|1|3", new
HashMap<>());
+ Assert.assertEquals(1, output2.size());
+ Assert.assertEquals(output2.get(0), "result=[User, Alice, ID,
12345]");
+
+ String transformSql3 = "select
regexp_split_to_array(string1,string2,string3) from source";
+ TransformConfig config3 = new TransformConfig(transformSql3);
+ TransformProcessor<String, String> processor3 = TransformProcessor
+ .create(config3,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ // case3: regexp_split_to_array("foo 123 bar 456", "\\d+", "g")
+ List<String> output3 = processor3.transform("foo 123 bar
456|\\\\d+|g|2|1|3", new HashMap<>());
+ Assert.assertEquals(1, output3.size());
+ Assert.assertEquals(output3.get(0), "result=[foo , bar ]");
+
+ // case4: regexp_split_to_array("foo 123 bAr 456", "bar", "i")
+ List<String> output4 = processor3.transform("foo 123 bAr
456|bar|i|2|1|3", new HashMap<>());
+ Assert.assertEquals(1, output4.size());
+ Assert.assertEquals(output4.get(0), "result=[foo 123 , 456]");
+
+ // case5: regexp_split_to_array("Hello! hello World", "hello", "ig")
+ List<String> output5 = processor3.transform("Hello! hello
World|hello|ig|2|1|3", new HashMap<>());
+ Assert.assertEquals(1, output5.size());
+ Assert.assertEquals(output5.get(0), "result=[, ! , World]");
+
+ // case6: regexp_split_to_array("First line\nSecond line", "^Second",
"m")
+ List<String> output6 = processor3.transform("First line\\\nSecond
line|^Second|m|2|1|3", new HashMap<>());
+ Assert.assertEquals(1, output6.size());
+ Assert.assertEquals(output6.get(0), "result=[First line\n, line]");
+
+ // case7: regexp_split_to_array("Hello! hello World", "hello", "igx")
+ List<String> output7 = processor3.transform("Hello! hello
World|hello|igx|2|1|3", new HashMap<>());
+ Assert.assertEquals(1, output7.size());
+ Assert.assertEquals(output7.get(0), "result=[, ! , World]");
+
+ // case6: regexp_split_to_array("First line\nSecond line", "^Second",
"n")
+ List<String> output8 = processor3.transform("First line\\\nSecond
line|^Second|n|2|1|3", new HashMap<>());
+ Assert.assertEquals(1, output8.size());
+ Assert.assertEquals(output8.get(0), "result=[First line\n, line]");
+ }
+}
