| /* |
| * 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.pig.builtin; |
| |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| |
| public class TestFunctionWrapperEvalFunc { |
| |
| public static class StringStringFunction implements org.apache.pig.Function<String, String> { |
| @Override |
| public String apply(String s) { |
| return "foo"; |
| } |
| }; |
| |
| public static class StringIntegerFunction implements org.apache.pig.Function<String, Integer> { |
| @Override |
| public Integer apply(String s) { |
| return new Integer(s); |
| } |
| }; |
| |
| public static class IntegerFloatFunction implements com.google.common.base.Function<Integer, Float> { |
| @Override |
| public Float apply(Integer integer) { |
| return new Float(integer); |
| } |
| }; |
| |
| public static class ExceptionalIntegerFloatFunction |
| implements org.apache.pig.ExceptionalFunction<Integer, Float, MockException> { |
| @Override |
| public Float apply(Integer integer) throws MockException { |
| if (integer > 10) { |
| throw new MockException(); |
| } |
| return new Float(integer); |
| } |
| }; |
| |
| public static class MockException extends Exception {} |
| |
| @Test |
| public final void testStringToString() throws IOException, ClassNotFoundException, |
| NoSuchMethodException, InstantiationException, IllegalAccessException { |
| FunctionWrapperEvalFunc udf = new FunctionWrapperEvalFunc(StringStringFunction.class.getName()); |
| |
| assertEquals(String.class, udf.getInputTypeClass()); |
| assertEquals(String.class, udf.getOutputTypeClass()); |
| assertEquals("foo", udf.exec("xyz")); |
| } |
| |
| @Test |
| public final void testStringToInteger() throws IOException, ClassNotFoundException, |
| NoSuchMethodException, InstantiationException, IllegalAccessException { |
| FunctionWrapperEvalFunc udf = new FunctionWrapperEvalFunc(StringIntegerFunction.class.getName()); |
| |
| assertEquals(String.class, udf.getInputTypeClass()); |
| assertEquals(Integer.class, udf.getOutputTypeClass()); |
| assertEquals(4, udf.exec("4")); |
| } |
| |
| @Test |
| public final void testStringToIntegerPreinitialized() throws IOException, ClassNotFoundException, |
| NoSuchMethodException, InstantiationException, IllegalAccessException { |
| org.apache.pig.ExceptionalFunction function = new StringIntegerFunction(); |
| FunctionWrapperEvalFunc udf = new FunctionWrapperEvalFunc(function); |
| |
| assertEquals(String.class, udf.getInputTypeClass()); |
| assertEquals(Integer.class, udf.getOutputTypeClass()); |
| assertEquals(4, udf.exec("4")); |
| } |
| |
| @Test |
| public final void testIntegerToFloat() throws IOException, ClassNotFoundException, |
| NoSuchMethodException, InstantiationException, IllegalAccessException { |
| FunctionWrapperEvalFunc udf = new FunctionWrapperEvalFunc(IntegerFloatFunction.class.getName()); |
| |
| assertEquals(Integer.class, udf.getInputTypeClass()); |
| assertEquals(Float.class, udf.getOutputTypeClass()); |
| assertEquals(4.0f, udf.exec(new Integer(4))); |
| } |
| |
| @Test |
| public final void testIntegerToFloatPreinitialized() throws IOException, ClassNotFoundException, |
| NoSuchMethodException, InstantiationException, IllegalAccessException { |
| com.google.common.base.Function function = new IntegerFloatFunction(); |
| FunctionWrapperEvalFunc udf = new FunctionWrapperEvalFunc(function); |
| |
| assertEquals(Integer.class, udf.getInputTypeClass()); |
| assertEquals(Float.class, udf.getOutputTypeClass()); |
| assertEquals(4.0f, udf.exec(new Integer(4))); |
| } |
| |
| @Test |
| public final void testExceptionalIntegerToFloat() throws IOException, ClassNotFoundException, |
| NoSuchMethodException, InstantiationException, IllegalAccessException { |
| FunctionWrapperEvalFunc udf = |
| new FunctionWrapperEvalFunc(ExceptionalIntegerFloatFunction.class.getName()); |
| |
| assertEquals(Integer.class, udf.getInputTypeClass()); |
| assertEquals(Float.class, udf.getOutputTypeClass()); |
| assertEquals(4.0f, udf.exec(new Integer(4))); |
| } |
| |
| @Test |
| public final void testExceptionalIntegerToFloatWithException() throws IOException, ClassNotFoundException, |
| NoSuchMethodException, InstantiationException, IllegalAccessException { |
| |
| FunctionWrapperEvalFunc udf = |
| new FunctionWrapperEvalFunc(ExceptionalIntegerFloatFunction.class.getName()); |
| |
| assertEquals(Float.class, udf.getOutputTypeClass()); |
| Exception exception = null; |
| try { |
| udf.exec(new Integer(11)); |
| } catch (IOException e) { |
| exception = e; |
| } |
| |
| assertNotNull(exception); |
| assertEquals(IOException.class, exception.getClass()); |
| assertEquals(MockException.class, exception.getCause().getClass()); |
| } |
| } |