corr.writable.VariableValuePairsWritable.java Source code

Introduction

Here is the source code for corr.writable.VariableValuePairsWritable.java

Source

/**
 * Copyright 2012 Jee Vang 
 * 
 * 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 corr.writable;

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

import org.apache.hadoop.io.Writable;

/**
 * A pair of values corresponding to the i-th and j-th columns/variables.
 * @author Jee Vang
 *
 */
public class VariableValuePairsWritable implements Writable {

    private double i;
    private double j;

    /**
     * Empty constructor.
     */
    public VariableValuePairsWritable() {
        this(0.0d, 0.0d);
    }

    /**
     * Constructor.
     * @param i i-th variable value.
     * @param j j-th variable value.
     */
    public VariableValuePairsWritable(double i, double j) {
        this.i = i;
        this.j = j;
    }

    @Override
    public int hashCode() {
        return 37 + (new Double(i)).hashCode() + (new Double(j)).hashCode();
    }

    @Override
    public String toString() {
        return (new StringBuilder()).append('{').append(getI()).append(',').append(getJ()).append('}').toString();
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        i = in.readDouble();
        j = in.readDouble();
    }

    @Override
    public void write(DataOutput out) throws IOException {
        out.writeDouble(getI());
        out.writeDouble(getJ());
    }

    /**
     * Gets the i-th variable value.
     * @return double.
     */
    public double getI() {
        return i;
    }

    /**
     * Sets the i-th variable value.
     * @param i double.
     */
    public void setI(double i) {
        this.i = i;
    }

    /**
     * Gets the j-th variable value.
     * @return double.
     */
    public double getJ() {
        return j;
    }

    /**
     * Sets the j-th variable value.
     * @param j double.
     */
    public void setJ(double j) {
        this.j = j;
    }

}