co.nubetech.hiho.merge.HihoValue.java Source code

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Here is the source code for co.nubetech.hiho.merge.HihoValue.java

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/**
 * Copyright 2011 Nube Technologies
 *
 * 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 co.nubetech.hiho.merge;

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

import org.apache.hadoop.io.BooleanWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;

public class HihoValue<V extends Writable> implements Writable {

    protected BooleanWritable isOld;
    protected V val;
    private Text valClass;

    /*@Override
    public int hashCode() {
       final int prime = 31;
       int result = 1;
       result = prime * result + ((isOld == null) ? 0 : isOld.hashCode());
       result = prime * result + ((val == null) ? 0 : val.hashCode());
       result = prime * result
        + ((valClass == null) ? 0 : valClass.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;
        HihoValue other = (HihoValue) obj;
        if (isOld == null) {
            if (other.isOld != null)
                return false;
        } else if (!isOld.equals(other.isOld))
            return false;
        if (val == null) {
            if (other.val != null)
                return false;
        } else if (!val.equals(other.val))
            return false;
        if (valClass == null) {
            if (other.valClass != null)
                return false;
        } else if (!valClass.equals(other.valClass))
            return false;
        return true;
    }

    public V getVal() {
        return val;
    }

    public Boolean getIsOld() {
        return isOld.get();
    }

    public void setVal(V val) {
        this.val = val;
        this.valClass = new Text(val.getClass().getName());
    }

    public void setIsOld(Boolean isOld) {
        this.isOld = new BooleanWritable(isOld);
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        isOld = new BooleanWritable();
        isOld.readFields(in);
        valClass = new Text();
        valClass.readFields(in);
        try {
            val = (V) Class.forName(valClass.toString()).newInstance();
        } catch (Exception e) {
            e.printStackTrace();
        }
        val.readFields(in);
    }

    @Override
    public void write(DataOutput out) throws IOException {
        isOld.write(out);
        valClass.write(out);
        val.write(out);
    }

}