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new a31b09ae88 [INLONG-11002][SDK] Transform SQL support Fibonacci
function (#11622)
a31b09ae88 is described below
commit a31b09ae88c7c708a6bd24b1c0558c6140eef2a1
Author: emptyOVO <[email protected]>
AuthorDate: Tue Dec 31 09:55:59 2024 +0800
[INLONG-11002][SDK] Transform SQL support Fibonacci function (#11622)
---
.../function/arithmetic/FibonacciFunction.java | 83 ++++++++++++++++++++++
.../function/arithmetic/TestFibonacciFunction.java | 62 ++++++++++++++++
2 files changed, 145 insertions(+)
diff --git
a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/arithmetic/FibonacciFunction.java
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/arithmetic/FibonacciFunction.java
new file mode 100644
index 0000000000..3c2ba9d1ed
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/arithmetic/FibonacciFunction.java
@@ -0,0 +1,83 @@
+/*
+ * 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.arithmetic;
+
+import org.apache.inlong.sdk.transform.decode.SourceData;
+import org.apache.inlong.sdk.transform.process.Context;
+import org.apache.inlong.sdk.transform.process.function.FunctionConstant;
+import org.apache.inlong.sdk.transform.process.function.TransformFunction;
+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.util.List;
+
+/**
+ * FibonacciFunction -> fibonacci(numeric)
+ * Description:
+ * - Return NULL if 'numeric' is NULL;
+ * - Returns the nth Fibonacci number
+ */
+@TransformFunction(type = FunctionConstant.ARITHMETIC_TYPE, names = {
+ "fibonacci"}, parameter = "(Numeric numeric)", descriptions = {
+ "- Return NULL if 'numeric' is NULL;",
+ "- Returns the nth Fibonacci number"
+ }, examples = {"fibonacci(0) = 0", "fibonacci(1) = 1", "fibonacci(2) =
1", "fibonacci(3) = 2",
+ "fibonacci(4) = 3"})
+public class FibonacciFunction implements ValueParser {
+
+ private ValueParser numberParser;
+
+ public FibonacciFunction(Function expr) {
+ if (expr.getParameters() != null) {
+ List<Expression> expressions =
expr.getParameters().getExpressions();
+ if (expressions != null && expressions.size() == 1) {
+ numberParser = OperatorTools.buildParser(expressions.get(0));
+ }
+ }
+ }
+
+ @Override
+ public Object parse(SourceData sourceData, int rowIndex, Context context) {
+ if (numberParser != null) {
+ Object valueObj = numberParser.parse(sourceData, rowIndex,
context);
+ if (valueObj == null) {
+ return null;
+ }
+ BigDecimal numberValue = OperatorTools.parseBigDecimal(valueObj);
+ return fibonacci(numberValue.intValue());
+ }
+ return null;
+ }
+
+ private long fibonacci(int n) {
+ if (n <= 1) {
+ return n;
+ }
+ long prev = 0, curr = 1;
+ for (int i = 2; i <= n; i++) {
+ long temp = curr;
+ curr = curr + prev;
+ prev = temp;
+ }
+ return curr;
+ }
+}
diff --git
a/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/arithmetic/TestFibonacciFunction.java
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/arithmetic/TestFibonacciFunction.java
new file mode 100644
index 0000000000..abd31847b7
--- /dev/null
+++
b/inlong-sdk/transform-sdk/src/test/java/org/apache/inlong/sdk/transform/process/function/arithmetic/TestFibonacciFunction.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.arithmetic;
+
+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 TestFibonacciFunction extends AbstractFunctionArithmeticTestBase {
+
+ @Test
+ public void testFibonacciFunction() throws Exception {
+ String transformSql = "select fibonacci(numeric1) from source";
+ TransformConfig config = new TransformConfig(transformSql);
+ TransformProcessor<String, String> processor = TransformProcessor
+ .create(config,
SourceDecoderFactory.createCsvDecoder(csvSource),
+ SinkEncoderFactory.createKvEncoder(kvSink));
+
+ // case1: fibonacci(0)
+ List<String> output1 = processor.transform("0|4|6|8", new HashMap<>());
+ Assert.assertEquals(1, output1.size());
+ Assert.assertEquals(output1.get(0), "result=0");
+
+ // case2: fibonacci(1)
+ List<String> output2 = processor.transform("1|4|6|8", new HashMap<>());
+ Assert.assertEquals(1, output2.size());
+ Assert.assertEquals(output2.get(0), "result=1");
+
+ // case3: fibonacci(7)
+ List<String> output3 = processor.transform("7|4|6|8", new HashMap<>());
+ Assert.assertEquals(1, output3.size());
+ Assert.assertEquals(output3.get(0), "result=13");
+
+ // case4: fibonacci(10)
+ List<String> output4 = processor.transform("10|4|6|8", new
HashMap<>());
+ Assert.assertEquals(1, output4.size());
+ Assert.assertEquals(output4.get(0), "result=55");
+ }
+
+}
