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new e33a5e8816 [INLONG-10882][SDK] Transform SQL support ASCII function
(#10994)
e33a5e8816 is described below
commit e33a5e88166f7c2633400fb40e57015e9bb0d398
Author: MOONSakura0614 <[email protected]>
AuthorDate: Thu Sep 12 14:55:05 2024 +0800
[INLONG-10882][SDK] Transform SQL support ASCII function (#10994)
---
.../transform/process/function/AsciiFunction.java | 66 ++++++++++++++++++++++
.../process/function/string/TestAsciiFunction.java | 62 ++++++++++++++++++++
2 files changed, 128 insertions(+)
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 0000000000..dac7cb3bab
--- /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<Expression> 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 0000000000..10d0c4032b
--- /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<String, String> processor1 = TransformProcessor
+ .create(config1,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case1: ascii('abc') -> 97
+ List<String> 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<String, String> processor2 = TransformProcessor
+ .create(config2,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case3: ascii(null) -> null
+ List<String> output2 = processor2.transform("A|el|EL|2|1|3", new
HashMap<>());
+ Assert.assertEquals(1, output2.size());
+ Assert.assertEquals(output2.get(0), "result=null");
+ }
+}
