| /** |
| * 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.crunch.io.impl; |
| |
| import java.io.IOException; |
| |
| import org.apache.commons.lang.builder.HashCodeBuilder; |
| import org.apache.crunch.Source; |
| import org.apache.crunch.SourceTarget; |
| import org.apache.crunch.Target; |
| import org.apache.crunch.io.OutputHandler; |
| import org.apache.crunch.types.Converter; |
| import org.apache.crunch.types.PType; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.mapreduce.Job; |
| |
| class SourceTargetImpl<T> implements SourceTarget<T> { |
| |
| protected final Source<T> source; |
| protected final Target target; |
| |
| public SourceTargetImpl(Source<T> source, Target target) { |
| this.source = source; |
| this.target = target; |
| } |
| |
| @Override |
| public Source<T> inputConf(String key, String value) { |
| source.inputConf(key, value); |
| return this; |
| } |
| |
| @Override |
| public SourceTarget<T> fileSystem(FileSystem fileSystem) { |
| source.fileSystem(fileSystem); |
| target.fileSystem(fileSystem); |
| return this; |
| } |
| |
| @Override |
| public FileSystem getFileSystem() { |
| // could either return source or target filesytem as they are the same |
| return source.getFileSystem(); |
| } |
| |
| @Override |
| public PType<T> getType() { |
| return source.getType(); |
| } |
| |
| @Override |
| public void configureSource(Job job, int inputId) throws IOException { |
| source.configureSource(job, inputId); |
| } |
| |
| @Override |
| public long getSize(Configuration configuration) { |
| return source.getSize(configuration); |
| } |
| |
| @Override |
| public boolean accept(OutputHandler handler, PType<?> ptype) { |
| return target.accept(handler, ptype); |
| } |
| |
| @Override |
| public <S> SourceTarget<S> asSourceTarget(PType<S> ptype) { |
| if (ptype != null && ptype.equals(source.getType())) { |
| return (SourceTarget<S>) this; |
| } |
| return target.asSourceTarget(ptype); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (other == null || !(other.getClass().equals(getClass()))) { |
| return false; |
| } |
| SourceTargetImpl sti = (SourceTargetImpl) other; |
| return source.equals(sti.source) && target.equals(sti.target); |
| } |
| |
| @Override |
| public int hashCode() { |
| return new HashCodeBuilder().append(source).append(target).toHashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| return source.toString(); |
| } |
| |
| @Override |
| public Target outputConf(String key, String value) { |
| target.outputConf(key, value); |
| return this; |
| } |
| |
| @Override |
| public boolean handleExisting(WriteMode strategy, long lastModifiedAt, Configuration conf) { |
| return target.handleExisting(strategy, lastModifiedAt, conf); |
| } |
| |
| @Override |
| public long getLastModifiedAt(Configuration configuration) { |
| return source.getLastModifiedAt(configuration); |
| } |
| |
| @Override |
| public Converter<?, ?, ?, ?> getConverter() { |
| return source.getConverter(); |
| } |
| |
| @Override |
| public Converter<?, ?, ?, ?> getConverter(PType<?> ptype) { |
| return target.getConverter(ptype); |
| } |
| |
| @Override |
| public SourceTarget<T> conf(String key, String value) { |
| source.inputConf(key, value); |
| target.outputConf(key, value); |
| return this; |
| } |
| } |