com.google.appengine.tools.mapreduce.StubInputSplit.java Source code

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Here is the source code for com.google.appengine.tools.mapreduce.StubInputSplit.java

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/*
 * Copyright 2010 Google Inc.
 *
 * Licensed 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 com.google.appengine.tools.mapreduce;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.mapreduce.InputSplit;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;

/**
 * Stub input split. Contains the info for generating a predetermined series
 * of records.
 * 
 */
public class StubInputSplit extends InputSplit implements Writable {
    private int id;
    static final List<IntWritable> KEYS = Arrays.asList(new IntWritable(10), new IntWritable(9),
            new IntWritable(8));

    // Only intended for deserialization
    public StubInputSplit() {

    }

    public StubInputSplit(int id) {
        this.id = id;
    }

    public IntWritable getKey(int offset) {
        return KEYS.get(offset);
    }

    public List<IntWritable> getKeys() {
        return KEYS;
    }

    @Override
    public long getLength() {
        return 0;
    }

    @Override
    public String[] getLocations() {
        return null;
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        id = in.readInt();
    }

    @Override
    public void write(DataOutput out) throws IOException {
        out.writeInt(id);
    }
}