Package co.nubetech.hiho.merge

Source Code of co.nubetech.hiho.merge.HihoValue

/**
* 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);
  }

}
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