| /** |
| * 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.hcatalog.data.transfer; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.hadoop.conf.Configurable; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapreduce.InputSplit; |
| import org.apache.hcatalog.mapreduce.HCatSplit; |
| |
| /** |
| * This class will contain information of different {@link InputSplit} obtained |
| * at master node and configuration. This class implements |
| * {@link Externalizable} so it can be serialized using standard java |
| * mechanisms. |
| */ |
| public class ReaderContext implements Externalizable, Configurable { |
| |
| private static final long serialVersionUID = -2656468331739574367L; |
| private List<InputSplit> splits; |
| private Configuration conf; |
| |
| public ReaderContext() { |
| this.splits = new ArrayList<InputSplit>(); |
| this.conf = new Configuration(); |
| } |
| |
| public void setInputSplits(final List<InputSplit> splits) { |
| this.splits = splits; |
| } |
| |
| public List<InputSplit> getSplits() { |
| return splits; |
| } |
| |
| @Override |
| public Configuration getConf() { |
| return conf; |
| } |
| |
| @Override |
| public void setConf(final Configuration config) { |
| conf = config; |
| } |
| |
| @Override |
| public void writeExternal(ObjectOutput out) throws IOException { |
| conf.write(out); |
| out.writeInt(splits.size()); |
| for (InputSplit split : splits) { |
| ((HCatSplit) split).write(out); |
| } |
| } |
| |
| @Override |
| public void readExternal(ObjectInput in) throws IOException, |
| ClassNotFoundException { |
| conf.readFields(in); |
| int numOfSplits = in.readInt(); |
| for (int i = 0; i < numOfSplits; i++) { |
| HCatSplit split = new HCatSplit(); |
| split.readFields(in); |
| splits.add(split); |
| } |
| } |
| } |