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new 7aa0247228 [INLONG-10902][SDK] Transform support HEX(numeric or
string) function (#10904)
7aa0247228 is described below
commit 7aa0247228a4439123e5096dc6ac669ec2167f3f
Author: emptyOVO <[email protected]>
AuthorDate: Sat Aug 31 18:32:45 2024 +0800
[INLONG-10902][SDK] Transform support HEX(numeric or string) function
(#10904)
* [INLONG-10902][SDK] Transform support HEX(numeric or string) function
* fix: add functions to check data type
* fix: test data comment
* fix: add anotation
* fix: code conflicts
* fix: add isBigDecimal function to check whether it can be parsed to
BigDecimal
---------
Co-authored-by: AloysZhang <[email protected]>
---
.../transform/process/function/HexFunction.java | 108 +++++++++++++++++++++
.../TestTransformArithmeticFunctionsProcessor.java | 29 ++++++
2 files changed, 137 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/HexFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/HexFunction.java
new file mode 100644
index 0000000000..c641209162
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/HexFunction.java
@@ -0,0 +1,108 @@
+/*
+ * 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.Function;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.util.Optional;
+import java.util.regex.Pattern;
+
+/**
+ * HexFunction
+ * description:
+ * - If the input argument is a numeric value (such as an integer), the HEX
function converts the value to the corresponding hexadecimal string.
+ * - If the input argument is a string, the HEX function converts each
character in the string to its corresponding hexadecimal ASCII encoding and
returns the hexadecimal representation of the entire string.
+ */
+@TransformFunction(names = {"hex"})
+class HexFunction implements ValueParser {
+
+ private static final Pattern BIG_DECIMAL_PATTERN =
Pattern.compile("^[-+]?\\d+(\\.\\d+)?([eE][-+]?\\d+)?$");
+
+ private ValueParser valueParser;
+
+ public HexFunction(Function expr) {
+ valueParser =
OperatorTools.buildParser(expr.getParameters().getExpressions().get(0));
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ Object valueObj = valueParser.parse(sourceData, rowIndex, context);
+ if (isBigDecimal(valueObj)) {
+ return hex(OperatorTools.parseBigDecimal(valueObj)).toUpperCase();
+ }
+ return hex(OperatorTools.parseString(valueObj)).toUpperCase();
+ }
+
+ private boolean isBigDecimal(Object valueObj) {
+ if (valueObj instanceof BigDecimal) {
+ return true;
+ }
+ if (valueObj instanceof String) {
+ String str = (String) valueObj;
+ return BIG_DECIMAL_PATTERN.matcher(str).matches();
+ }
+ return false;
+ }
+
+ // Handle Integer type
+ private String hex(int number) {
+ return Integer.toHexString(number).toUpperCase();
+ }
+
+ // Handle long type
+ private String hex(long number) {
+ return Long.toHexString(number).toUpperCase();
+ }
+
+ // Handle String type
+ private String hex(String input) {
+ StringBuilder hexString = new StringBuilder();
+ for (char c : input.toCharArray()) {
+ hexString.append(Integer.toHexString((int) c).toUpperCase());
+ }
+ return hexString.toString();
+ }
+
+ // Handle BigDecimal type
+ private String hex(BigDecimal number) {
+ // keep the integer part
+ BigDecimal integerValue = number.setScale(0, RoundingMode.DOWN);
+ return tryConvert(integerValue, BigDecimal::intValueExact, this::hex)
+ // If it cannot convert to integer, try converting to long
+ .orElseGet(() -> tryConvert(integerValue,
BigDecimal::longValueExact, this::hex)
+ .orElseThrow(() -> new
IllegalArgumentException("Number out of range")));
+ }
+
+ // Common conversion and processing methods
+ private <T> Optional<String> tryConvert(BigDecimal number,
java.util.function.Function<BigDecimal, T> converter,
+ java.util.function.Function<T, String> handler) {
+ try {
+ T value = converter.apply(number);
+ return Optional.ofNullable(handler.apply(value));
+ } catch (ArithmeticException e) {
+ return Optional.empty();
+ }
+ }
+}
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 1467636e65..87ce145df6 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
@@ -619,4 +619,33 @@ public class TestTransformArithmeticFunctionsProcessor {
Assert.assertTrue(result >= 0.0 && result < 1.0);
}
+ @Test
+ public void testHexFunction() throws Exception {
+ String transformSql1 = "select hex(numeric1) from source";
+ TransformConfig config1 = new TransformConfig(transformSql1);
+ TransformProcessor<String, String> processor1 = TransformProcessor
+ .create(config1,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+ // case: hex(1007)
+ List<String> output1 = processor1.transform("1007|4|6|8", new
HashMap<>());
+ Assert.assertEquals(1, output1.size());
+ Assert.assertEquals(output1.get(0), "result=3EF");
+ // case: hex(3.14)
+ List<String> output2 = processor1.transform("3.14|4|6|8", new
HashMap<>());
+ Assert.assertEquals(1, output2.size());
+ Assert.assertEquals(output2.get(0), "result=3");
+ // case: hex(3.141592653589793)
+ List<String> output3 = processor1.transform("3.141592653589793|4|6|8",
new HashMap<>());
+ Assert.assertEquals(1, output3.size());
+ Assert.assertEquals(output3.get(0), "result=3");
+ // case: hex(-9223372036854775808)
+ List<String> output4 =
processor1.transform("-9223372036854775808|4|6|8", new HashMap<>());
+ Assert.assertEquals(1, output4.size());
+ Assert.assertEquals(output4.get(0), "result=8000000000000000");
+ // case: hex(abc)
+ List<String> output5 = processor1.transform("abc|4|6|8", new
HashMap<>());
+ Assert.assertEquals(1, output5.size());
+ Assert.assertEquals(output5.get(0), "result=616263");
+ }
+
}
