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new a46d4da26f [INLONG-10803][SDK] Transform SQL support Round function
(#10810)
a46d4da26f is described below
commit a46d4da26fe04a8fc442d3ef009d140903c2ceab
Author: Zkplo <87751516+zk...@users.noreply.github.com>
AuthorDate: Tue Aug 20 10:57:20 2024 +0800
[INLONG-10803][SDK] Transform SQL support Round function (#10810)
* [INLONG-10803][SDK] Transform SQL support Round function
* [INLONG-10803][SDK] Transform SQL support Round function
---------
Co-authored-by: ZKpLo <14148880+zk...@user.noreply.gitee.com>
---
.../transform/process/function/RoundFunction.java | 60 ++++++++++++++++++++++
.../transform/process/operator/OperatorTools.java | 2 +
.../TestTransformArithmeticFunctionsProcessor.java | 31 +++++++++++
3 files changed, 93 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/RoundFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/RoundFunction.java
new file mode 100644
index 0000000000..ecad419635
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/RoundFunction.java
@@ -0,0 +1,60 @@
+/*
+ * 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.math.BigDecimal;
+import java.math.RoundingMode;
+import java.util.List;
+
+/**
+ * RoundFunction
+ * description: ROUND(x [,y]) -- Return the nearest integer to x, with
optional parameter y indicating the number of decimal places to be rounded. If
omitted, return the integer.
+ */
+public class RoundFunction implements ValueParser {
+
+ private ValueParser numberParser;
+ private ValueParser reservedDigitsParser;
+
+ public RoundFunction(Function expr) {
+ List<Expression> expressions = expr.getParameters().getExpressions();
+ numberParser = OperatorTools.buildParser(expressions.get(0));
+ if (expressions.size() == 2) {
+ reservedDigitsParser =
OperatorTools.buildParser(expressions.get(1));
+ }
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ Object numberObj = numberParser.parse(sourceData, rowIndex, context);
+ BigDecimal number = OperatorTools.parseBigDecimal(numberObj);
+ if (reservedDigitsParser != null) {
+ Object reservedDigitsObj = reservedDigitsParser.parse(sourceData,
rowIndex, context);
+ int reservedDigits =
OperatorTools.parseBigDecimal(reservedDigitsObj).intValue();
+ return number.setScale(reservedDigits,
RoundingMode.HALF_UP).doubleValue();
+ }
+ return Math.round(number.doubleValue());
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/operator/OperatorTools.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/operator/OperatorTools.java
index 4f29fba315..fe361263a4 100644
---
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/operator/OperatorTools.java
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/operator/OperatorTools.java
@@ -34,6 +34,7 @@ import
org.apache.inlong.sdk.transform.process.function.Log2Function;
import org.apache.inlong.sdk.transform.process.function.LogFunction;
import org.apache.inlong.sdk.transform.process.function.NowFunction;
import org.apache.inlong.sdk.transform.process.function.PowerFunction;
+import org.apache.inlong.sdk.transform.process.function.RoundFunction;
import org.apache.inlong.sdk.transform.process.function.SinFunction;
import org.apache.inlong.sdk.transform.process.function.SinhFunction;
import org.apache.inlong.sdk.transform.process.function.SqrtFunction;
@@ -129,6 +130,7 @@ public class OperatorTools {
functionMap.put("second",
func -> new
TimestampExtractFunction(TimestampExtractFunction.TimestampExtractFunctionType.SECOND,
func));
+ functionMap.put("round", RoundFunction::new);
functionMap.put("from_unixtime", FromUnixTimeFunction::new);
functionMap.put("unix_timestamp", UnixTimestampFunction::new);
functionMap.put("to_timestamp", ToTimestampFunction::new);
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformArithmeticFunctionsProcessor.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformArithmeticFunctionsProcessor.java
index 899528d843..7ec41e4c32 100644
---
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformArithmeticFunctionsProcessor.java
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/TestTransformArithmeticFunctionsProcessor.java
@@ -41,6 +41,7 @@ public class TestTransformArithmeticFunctionsProcessor {
private static final List<FieldInfo> dstFields = new ArrayList<>();
private static final CsvSourceInfo csvSource;
private static final KvSinkInfo kvSink;
+
static {
for (int i = 1; i < 5; i++) {
FieldInfo field = new FieldInfo();
@@ -54,6 +55,36 @@ public class TestTransformArithmeticFunctionsProcessor {
kvSink = new KvSinkInfo("UTF-8", dstFields);
}
+ @Test
+ public void testRoundFunction() throws Exception {
+ String transformSql = "select round(numeric1) from source";
+ TransformConfig config = new TransformConfig(transformSql);
+ // case1: round(3.14159265358979323846)
+ TransformProcessor<String, String> processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ List<String> output1 =
processor.transform("3.14159265358979323846|4|6|8");
+ Assert.assertEquals(1, output1.size());
+ Assert.assertEquals(output1.get(0), "result=3");
+ // case2: round(3.5)
+ List<String> output2 = processor.transform("3.5|4|6|8");
+ Assert.assertEquals(1, output2.size());
+ Assert.assertEquals(output2.get(0), "result=4");
+
+ transformSql = "select round(numeric1,numeric2) from source";
+ config = new TransformConfig(transformSql);
+ // case3: round(3.14159265358979323846,10)
+ processor = TransformProcessor.create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ List<String> output3 =
processor.transform("3.14159265358979323846|10|6|8");
+ Assert.assertEquals(1, output3.size());
+ Assert.assertEquals(output3.get(0), "result=3.1415926536");
+ // case4: round(13.14159265358979323846,-1)
+ List<String> output4 =
processor.transform("13.14159265358979323846|-1|6|8");
+ Assert.assertEquals(1, output4.size());
+ Assert.assertEquals(output4.get(0), "result=10.0");
+ }
+
@Test
public void testPowerFunction() throws Exception {
String transformSql = "select power(numeric1, numeric2) from source";
