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new 51390eac82 [INLONG-11117][SDK] Transform SQL supports ISNULL functions
(#11120)
51390eac82 is described below
commit 51390eac821e6ac7c7bb94874c6cd10dfc417a23
Author: Zkplo <87751516+zk...@users.noreply.github.com>
AuthorDate: Thu Sep 19 11:13:24 2024 +0800
[INLONG-11117][SDK] Transform SQL supports ISNULL functions (#11120)
Co-authored-by: ZKpLo <14148880+zk...@user.noreply.gitee.com>
---
.../transform/process/function/IsNullFunction.java | 64 +++++++++++++++
.../function/flowcontrol/TestIsNullFunction.java | 96 ++++++++++++++++++++++
2 files changed, 160 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/IsNullFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/IsNullFunction.java
new file mode 100644
index 0000000000..95078400fa
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/IsNullFunction.java
@@ -0,0 +1,64 @@
+/*
+ * 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.ExpressionOperator;
+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;
+
+/**
+ * IsNullFunction
+ * description: isnull(expr)
+ * - return true if expr is NULL
+ * - return false otherwise.
+ */
+@TransformFunction(names = {"isnull"})
+public class IsNullFunction implements ValueParser {
+
+ private ValueParser stringParser;
+ private ExpressionOperator operator;
+
+ public IsNullFunction(Function expr) {
+ Expression expression = expr.getParameters().getExpressions().get(0);
+ try {
+ stringParser = OperatorTools.buildParser(expression);
+ } catch (Exception e) {
+ operator = OperatorTools.buildOperator(expression);
+ }
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ Object val = null;
+ try {
+ if (stringParser != null) {
+ val = stringParser.parse(sourceData, rowIndex, context);
+ } else {
+ val = operator.check(sourceData, rowIndex, context);
+ }
+ } catch (Exception ignored) {
+
+ }
+ return val == null;
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/flowcontrol/TestIsNullFunction.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/flowcontrol/TestIsNullFunction.java
new file mode 100644
index 0000000000..1040d206dd
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/flowcontrol/TestIsNullFunction.java
@@ -0,0 +1,96 @@
+/*
+ * 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.flowcontrol;
+
+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.apache.inlong.sdk.transform.process.function.arithmetic.AbstractFunctionArithmeticTestBase;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class TestIsNullFunction extends AbstractFunctionArithmeticTestBase {
+
+ @Test
+ public void testIsNullFunction() throws Exception {
+ String transformSql = null, data = null;
+ TransformConfig config = null;
+ TransformProcessor<String, String> processor = null;
+ List<String> output = null;
+
+ // case1: isnull(5 + 3)
+ transformSql = "select isnull(numeric1 + numeric2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ data = "5|3|3|5";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=false", output.get(0));
+
+ // case2: isnull(5 / 0)
+ transformSql = "select isnull(numeric1 / numeric2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ data = "5|0|3|5";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=true", output.get(0));
+
+ // case3: isnull(null)
+ transformSql = "select isnull(numericx) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ data = "5|0|3|5";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=true", output.get(0));
+
+ // case4: isnull(5)
+ transformSql = "select isnull(numeric1) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ data = "5|0|3|5";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=false", output.get(0));
+
+ // case5: isnull(5 > 0)
+ transformSql = "select isnull(numeric1 > numeric2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ data = "5|0|3|5";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=false", output.get(0));
+ }
+}
