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new 3109548a40 [INLONG-11238][SDK] Transform SQL supports FORMAT function
(#11271)
3109548a40 is described below
commit 3109548a405afd69e72246c02d752337a4257553
Author: Zkplo <87751516+zk...@users.noreply.github.com>
AuthorDate: Tue Oct 8 12:51:25 2024 +0800
[INLONG-11238][SDK] Transform SQL supports FORMAT function (#11271)
Co-authored-by: ZKpLo <14148880+zk...@user.noreply.gitee.com>
---
.../transform/process/function/FormatFunction.java | 78 ++++++++++++++++++++++
.../function/string/TestFormatFunction.java | 69 +++++++++++++++++++
2 files changed, 147 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/FormatFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/FormatFunction.java
new file mode 100644
index 0000000000..4bf3f0027f
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/FormatFunction.java
@@ -0,0 +1,78 @@
+/*
+ * 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.text.DecimalFormat;
+import java.text.NumberFormat;
+import java.util.List;
+import java.util.Locale;
+
+/**
+ * FormatFunction -> FORMAT(X,D)
+ * description:
+ * return NULL if X or D is NULL.
+ * return the result of formatting the number X to "#,###,###.##" format,
rounded to D decimal places.
+ */
+@TransformFunction(names = {"format"})
+public class FormatFunction implements ValueParser {
+
+ private ValueParser numberParser;
+ private ValueParser reservedDigitsParser;
+
+ public FormatFunction(Function expr) {
+ List<Expression> expressions = expr.getParameters().getExpressions();
+ numberParser = OperatorTools.buildParser(expressions.get(0));
+ reservedDigitsParser = OperatorTools.buildParser(expressions.get(1));
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ Object numberObj = numberParser.parse(sourceData, rowIndex, context);
+ Object reservedDigitsObj = reservedDigitsParser.parse(sourceData,
rowIndex, context);
+ if (numberObj == null || reservedDigitsObj == null) {
+ return null;
+ }
+ BigDecimal number = OperatorTools.parseBigDecimal(numberObj);
+ int reservedDigits =
OperatorTools.parseBigDecimal(reservedDigitsObj).intValue();
+ if (reservedDigits < 0) {
+ reservedDigits = 0;
+ }
+ // build format
+ StringBuilder pattern = new StringBuilder("#,###");
+ if (reservedDigits > 0) {
+ pattern.append(".");
+ for (int i = 0; i < reservedDigits; i++) {
+ pattern.append("0");
+ }
+ }
+ number = number.setScale(reservedDigits, RoundingMode.HALF_UP);
+ DecimalFormat df = (DecimalFormat)
NumberFormat.getNumberInstance(Locale.US);
+ df.applyPattern(pattern.toString());
+ return df.format(number);
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestFormatFunction.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestFormatFunction.java
new file mode 100644
index 0000000000..1143873868
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/string/TestFormatFunction.java
@@ -0,0 +1,69 @@
+/*
+ * 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 TestFormatFunction extends AbstractFunctionStringTestBase {
+
+ @Test
+ public void testFormatFunction() throws Exception {
+ String transformSql = null, data = null;
+ TransformConfig config = null;
+ TransformProcessor<String, String> processor = null;
+ List<String> output = null;
+
+ transformSql = "select format(string1,string2) from source";
+ config = new TransformConfig(transformSql);
+ processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ // case1: FORMAT(12332.123456, 4)
+ data = "12332.123456|4|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=12,332.1235", output.get(0));
+
+ // case2: FORMAT(12332.1,4)
+ data = "12332.1|4|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=12,332.1000", output.get(0));
+
+ // case3: FORMAT(12332.2,0)
+ data = "12332.1|0|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=12,332", output.get(0));
+
+ // case4: FORMAT(12332.2,-3)
+ data = "12332.1|-3|";
+ output = processor.transform(data, new HashMap<>());
+ Assert.assertEquals(1, output.size());
+ Assert.assertEquals("result=12,332", output.get(0));
+ }
+}
