| /** |
| * 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.hadoop.mrunit.internal.output; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mrunit.internal.io.Serialization; |
| import org.apache.hadoop.mrunit.types.Pair; |
| |
| /** |
| * OutputCollector to use in the test framework for Mapper and Reducer classes. |
| * Accepts a set of output (k, v) pairs and returns them to the framework for |
| * validation. |
| */ |
| public class MockOutputCollector<K, V> implements OutputCollectable<K, V> { |
| |
| private final List<Pair<K, V>> collectedOutputs; |
| private final Serialization serialization; |
| |
| public MockOutputCollector(final Configuration conf) { |
| collectedOutputs = new ArrayList<Pair<K, V>>(); |
| serialization = new Serialization(conf); |
| } |
| |
| /** |
| * Accepts another (key, value) pair as an output of this mapper/reducer. |
| */ |
| @Override |
| public void collect(final K key, final V value) throws IOException { |
| collectedOutputs.add(new Pair<K, V>(serialization.copy(key), serialization |
| .copy(value))); |
| } |
| |
| /** |
| * @return The outputs generated by the mapper/reducer being tested |
| */ |
| @Override |
| public List<Pair<K, V>> getOutputs() { |
| return collectedOutputs; |
| } |
| } |