edu.cqupt.spectral.model.IntDoublePairWritable.java Source code

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Here is the source code for edu.cqupt.spectral.model.IntDoublePairWritable.java

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/**
 * 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 edu.cqupt.spectral.model;

import org.apache.hadoop.io.Writable;

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

/**
 * This class is a Writable implementation of the mahout.common.Pair
 * generic class. Since the generic types would also themselves have to
 * implement Writable, it made more sense to create a more specialized
 * version of the class altogether.
 * 
 * In essence, this can be treated as a single Vector Element.
 */
public class IntDoublePairWritable implements Writable, Comparable<IntDoublePairWritable> {

    private int key;
    private double value;

    public IntDoublePairWritable() {
    }

    public IntDoublePairWritable(int k, double v) {
        this.key = k;
        this.value = v;
    }

    public void setKey(int k) {
        this.key = k;
    }

    public void setValue(double v) {
        this.value = v;
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        this.key = in.readInt();
        this.value = in.readDouble();
    }

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

    public int getKey() {
        return key;
    }

    public double getValue() {
        return value;
    }

    @Override
    public int compareTo(IntDoublePairWritable o) {
        return Double.valueOf(this.getValue()).compareTo(Double.valueOf(o.getValue())); //To change body of implemented methods use File | Settings | File Templates.
    }
}