| /* |
| * 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; |
| |
| import org.apache.pig.data.Tuple; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class TestTypedOutputEvalFunc { |
| |
| private static class StringFunc extends TypedOutputEvalFunc<String> { |
| @Override |
| public String exec(Tuple input) throws IOException { |
| return "foo"; |
| } |
| }; |
| |
| private static class IntegerFunc extends TypedOutputEvalFunc<Integer> { |
| @Override |
| public Integer exec(Tuple input) throws IOException { |
| return 1; |
| } |
| }; |
| |
| private static class FloatFunc extends TypedOutputEvalFunc<Float> { |
| @Override |
| public Float exec(Tuple input) throws IOException { |
| return 1.0f; |
| } |
| }; |
| |
| private static final TypedOutputEvalFunc<String> stringFunc = new TypedOutputEvalFunc<String>() { |
| @Override |
| public String exec(Tuple input) throws IOException { |
| return "foo"; |
| } |
| }; |
| |
| private static final TypedOutputEvalFunc<Integer> intFunc = new TypedOutputEvalFunc<Integer>() { |
| @Override |
| public Integer exec(Tuple input) throws IOException { |
| return 1; |
| } |
| }; |
| |
| private static final TypedOutputEvalFunc<Float> floatFunc = new TypedOutputEvalFunc<Float>() { |
| @Override |
| public Float exec(Tuple input) throws IOException { |
| return 1.0f; |
| } |
| }; |
| |
| @Test |
| public final void testGetOutputTypes() throws IOException { |
| // Verify that type inference works for declared as well as anonymous classes. |
| assertEquals(String.class, stringFunc.getOutputTypeClass()); |
| assertEquals(Integer.class, intFunc.getOutputTypeClass()); |
| assertEquals(Float.class, floatFunc.getOutputTypeClass()); |
| |
| assertEquals(String.class, new StringFunc().getOutputTypeClass()); |
| assertEquals(Integer.class, new IntegerFunc().getOutputTypeClass()); |
| assertEquals(Float.class, new FloatFunc().getOutputTypeClass()); |
| } |
| } |