PDoubleInfo.java from Texai at Krugle

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/*
 * PDoubleInfo.java
 *
 * Created on October 24, 2006, 1:43 PM
 *
 * Description: Contains the specialized fields for PDouble.
 *
 * Copyright (C) 2006 Stephen L. Reed.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program;
 * if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

package org.texai.kb.ejb.entity;

import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import javax.persistence.Transient;

/**
 * Entity class PDoubleInfo
 *
 * @author reed
 */
@Entity
public class PDoubleInfo implements Serializable {

  /**
   * Determines if a de-serialized file is compatible with this class.
   *
   * Maintainers must change this value if and only if the new version
   * of this class is not compatible with old versions. See Sun docs
   * for <a href=http://java.sun.com/products/jdk/1.1/docs/guide
   * /serialization/spec/version.doc.html> details. </a>
   *
   * Not necessary to include in first version of the class, but
   * included here as a reminder of its importance.
   */
  @Transient
  private static final long serialVersionUID = 1L;

  /** the id */
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Long pDoubleInfoId;             // NOPMD

  /** the persistent double */
  @OneToOne
  private PDouble pDouble;                // NOPMD

  /** the double precision value */
  @Basic
  private Double doubleValue;             // NOPMD

  /** Creates a new instance of PDoubleInfo. */
  public PDoubleInfo() {
    super();
  }

  /** Creates a new instance of PDoubleInfo.
   *
   * @param pDouble the persistent double
   * @param doubleValue the double precision value
   */
  public PDoubleInfo(final PDouble pDouble, final Double doubleValue) {
    super();

    this.pDouble = pDouble;
    this.doubleValue = doubleValue;
  }

  /**
   * Gets the id of this PDoubleInfo.
   *
   * @return the id
   */
  public Long getPDoubleInfoId() {
    return this.pDoubleInfoId;
  }

  /** Gets the double precision value
   *
   * @return the double precision value
   */
  public Double getDoubleValue() {
    return doubleValue;
  }

  /**
   * Returns a hash code value for the object.  This implementation computes
   * a hash code value based on the unchanging doubleValue.
   * @return a hash code value for this object
   */
  @Override
  public int hashCode() {
    return doubleValue.hashCode();
  }

  /**
   * Determines whether another object is equal to this PDoubleInfo object.
   *
   * @param object the reference object with which to compare
   * @return <code>true</code> if this object is the same as the argument;
   * <code>false</code> otherwise.
   */
  @Override
  public boolean equals(final Object object) {
    if (!(object instanceof PDoubleInfo)) {
      return false;
    }
    final PDoubleInfo that = (PDoubleInfo) object;
    return this.getDoubleValue().equals(that.getDoubleValue());
  }

  /** Returns a string representation of this object.
   *
   * @return a string representation of this object
   */
  @Override
  public String toString() {
    return doubleValue.toString();
  }

  /** Returns a CycL representation of this object.
   *
   * @return a CycL representation of this object
   */
  public String toCycLString() {
    return toString();
  }

  /** gets the persistent double
   *
   * @return the persistent double
   */
  public PDouble getPDouble() {
    return pDouble;
  }

}
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