src/org/apache/xml/utils/CharKey.java

/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999-2003 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Xalan" and "Apache Software Foundation" must
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 * 5. Products derived from this software may not be called "Apache",
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, Lotus
 * Development Corporation., http://www.lotus.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package org.apache.xml.utils;

/**
 * <meta name="usage" content="internal"/>
 * Simple class for fast lookup of char values, when used with
 * hashtables.  You can set the char, then use it as a key.
 */
public class CharKey extends Object
{

  /** String value          */
  private char m_char;

  /**
   * Constructor CharKey
   *
   * @param key char value of this object.
   */
  public CharKey(char key)
  {
    m_char = key;
  }
  
  /**
   * Default constructor for a CharKey.
   *
   * @param key char value of this object.
   */
  public CharKey()
  {
  }
  
  /**
   * Get the hash value of the character.  
   *
   * @return hash value of the character.
   */
  public final void setChar(char c)
  {
    m_char = c;
  }



  /**
   * Get the hash value of the character.  
   *
   * @return hash value of the character.
   */
  public final int hashCode()
  {
    return (int)m_char;
  }

  /**
   * Override of equals() for this object 
   *
   * @param obj to compare to
   *
   * @return True if this object equals this string value 
   */
  public final boolean equals(Object obj)
  {
    return ((CharKey)obj).m_char == m_char;
  }
}