keynamepair.java

Java写的ERP系统

/******************************************************************************
 * The contents of this file are subject to the   Compiere License  Version 1.1
 * ("License"); You may not use this file except in compliance with the License
 * You may obtain a copy of the License at http://www.compiere.org/license.html
 * Software distributed under the License is distributed on an  "AS IS"  basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 * The Original Code is                  Compiere  ERP & CRM  Business Solution
 * The Initial Developer of the Original Code is Jorg Janke  and ComPiere, Inc.
 * Portions created by Jorg Janke are Copyright (C) 1999-2001 Jorg Janke, parts
 * created by ComPiere are Copyright (C) ComPiere, Inc.;   All Rights Reserved.
 * Contributor(s): ______________________________________.
 *****************************************************************************/
package org.compiere.util;

/**
 *	(Numeric) Key Name Pair
 *
 *  @author     Jorg Janke
 *  @version    $Id: KeyNamePair.java,v 1.3 2002/06/24 05:02:27 jjanke Exp $
 */
public final class KeyNamePair extends NamePair
{
	/**
	 *	Constructor KeyValue Pair -
	 *  @param key Key (-1 is considered as null)
	 *  @param name string representation
	 */
	public KeyNamePair(int key, String name)
	{
		super(name);
		m_key = key;
	}   //  KeyNamePair

	/** The Key         */
	private int 	m_key = 0;

	/**
	 *	Get Key
	 *  @return key
	 */
	public int getKey()
	{
		return m_key;
	}	//	getKey

	/**
	 *	Get ID (key as String)
	 *
	 *  @return String value of key or null if -1
	 */
	public String getID()
	{
		if (m_key == -1)
			return null;
		return String.valueOf(m_key);
	}	//	getID


	/**
	 *	Equals
	 *  @param obj object
	 *  @return true if equal
	 */
	public boolean equals(Object obj)
	{
		if (obj instanceof KeyNamePair)
		{
			KeyNamePair pp = (KeyNamePair)obj;
			if (pp.getName() != null &&
				pp.getName().equals(getName()) && pp.getKey() == m_key)
				return true;
			return false;
		}
		return false;
	}	//	equals

	/**
	 *  Return Hashcode of key
	 *  @return hascode
	 */
	public int hashCode()
	{
		return m_key;
	}   //  hashCode

}	//	KeyNamePair