de.hpi.fgis.hdrs.mapreduce.IndexSplit.java Source code

Introduction

Here is the source code for de.hpi.fgis.hdrs.mapreduce.IndexSplit.java

Source

/**
 * Copyright 2011 Daniel Hefenbrock
 *
 * 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 de.hpi.fgis.hdrs.mapreduce;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

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

import de.hpi.fgis.hdrs.Triple;

public class IndexSplit extends InputSplit implements Writable {

    private String[] locations;
    private Triple lowTriple;
    private Triple highTriple;

    public IndexSplit() {
    }

    IndexSplit(Triple lowTriple, Triple highTriple, String... locations) {
        this.locations = locations;
        this.lowTriple = lowTriple;
        this.highTriple = highTriple;
    }

    public Triple getLowTriple() {
        return lowTriple;
    }

    public Triple getHighTriple() {
        return highTriple;
    }

    @Override
    public long getLength() throws IOException, InterruptedException {
        return 0;
    }

    @Override
    public String[] getLocations() throws IOException, InterruptedException {
        return locations;
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        locations = new String[in.readInt()];
        for (int i = 0; i < locations.length; ++i) {
            locations[i] = in.readLine();
        }
        lowTriple = Triple.readTriple(in);
        highTriple = Triple.readTriple(in);
    }

    @Override
    public void write(DataOutput out) throws IOException {
        out.writeInt(locations.length);
        for (String location : locations) {
            out.writeBytes(location);
            out.write('\n');
        }
        lowTriple.write(out);
        highTriple.write(out);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((highTriple == null) ? 0 : highTriple.hashCode());
        result = prime * result + ((lowTriple == null) ? 0 : lowTriple.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        IndexSplit other = (IndexSplit) obj;
        if (highTriple == null) {
            if (other.highTriple != null) {
                return false;
            }
        } else if (!highTriple.equals(other.highTriple)) {
            return false;
        }
        if (lowTriple == null) {
            if (other.lowTriple != null) {
                return false;
            }
        } else if (!lowTriple.equals(other.lowTriple)) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "IndexSplit [lowTriple=" + lowTriple + ", highTriple=" + highTriple + "]";
    }

}