From e33a5e88166f7c2633400fb40e57015e9bb0d398 Mon Sep 17 00:00:00 2001 From: MOONSakura0614 <151456101+MOONSakura0614@users.noreply.github.com> Date: Thu, 12 Sep 2024 14:55:05 +0800 Subject: [PATCH] [INLONG-10882][SDK] Transform SQL support ASCII function (#10994) --- .../process/function/AsciiFunction.java | 66 +++++++++++++++++++ .../function/string/TestAsciiFunction.java | 62 +++++++++++++++++ 2 files changed, 128 insertions(+) create mode 100644 inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/AsciiFunction.java create mode 100644 inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestAsciiFunction.java diff --git a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/AsciiFunction.java b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/AsciiFunction.java new file mode 100644 index 00000000000..dac7cb3babe --- /dev/null +++ b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/AsciiFunction.java @@ -0,0 +1,66 @@ +/* + * 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; + +/** + * ASCIIFunction + * description: ASCII(string) -- Returns the numeric value of the first character of string. Returns NULL if string is NULL. + */ +@TransformFunction(names = {"ascii"}) +public class AsciiFunction implements ValueParser { + + private final ValueParser stringParser; + + /** + * Constructor + * @param expr + */ + public AsciiFunction(Function expr) { + List expressions = expr.getParameters().getExpressions(); + stringParser = OperatorTools.buildParser(expressions.get(0)); + } + + /** + * parse + * @param sourceData + * @param rowIndex + * @return + */ + @Override + public Object parse(SourceData sourceData, int rowIndex, Context context) { + Object stringObj = stringParser.parse(sourceData, rowIndex, context); + if (stringObj == null) { + return null; + } + String str = OperatorTools.parseString(stringObj); + if (str == null || str.isEmpty()) { + return null; + } + return (int) str.charAt(0); + } +} diff --git a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestAsciiFunction.java b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestAsciiFunction.java new file mode 100644 index 00000000000..10d0c4032b5 --- /dev/null +++ b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestAsciiFunction.java @@ -0,0 +1,62 @@ +/* + * 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 TestAsciiFunction extends AbstractFunctionStringTestBase { + + @Test + public void testAsciiFunction() throws Exception { + String transformSql1 = "select ascii(string1) from source"; + TransformConfig config1 = new TransformConfig(transformSql1); + TransformProcessor processor1 = TransformProcessor + .create(config1, SourceDecoderFactory.createCsvDecoder(csvSource), + SinkEncoderFactory.createKvEncoder(kvSink)); + + // case1: ascii('abc') -> 97 + List output1 = processor1.transform("abc|el|EL|2|1|3", new HashMap<>()); + Assert.assertEquals(1, output1.size()); + Assert.assertEquals(output1.get(0), "result=97"); + + // case1: ascii('A') -> 65 + output1 = processor1.transform("A|el|EL|2|1|3", new HashMap<>()); + Assert.assertEquals(1, output1.size()); + Assert.assertEquals(output1.get(0), "result=65"); + + String transformSql2 = "select ascii(stringX) from source"; + TransformConfig config2 = new TransformConfig(transformSql2); + TransformProcessor processor2 = TransformProcessor + .create(config2, SourceDecoderFactory.createCsvDecoder(csvSource), + SinkEncoderFactory.createKvEncoder(kvSink)); + + // case3: ascii(null) -> null + List output2 = processor2.transform("A|el|EL|2|1|3", new HashMap<>()); + Assert.assertEquals(1, output2.size()); + Assert.assertEquals(output2.get(0), "result=null"); + } +}