encobjectimp.java

Java Communicating Agents是一个用于开发网络反应式信息agent的框架

/*
 * $Source: /home/data/cvsroot/src/jacomma/icm/io/imp/EncObjectImp.java,v $
 * $Revision: 1.12 $
 * $Date: 2000/10/28 20:09:07 $
 *
 * This file is part of the jacomma framework
 * Copyright (c) 2000 	Dimitrios Vyzovitis
 *			mailto:[e-mail]
 *			
 *
 *			
 *			
 *			
 *
 *	This library is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU Library General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	This library 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 Library General Public License for more details.
 *
 *	You should have received a copy of the GNU Library General Public License
 *	along with this library; if not, write to the Free Software
 *	Foundation, Inc., 59 Temple Place, Suite 330, 
 *	Boston, MA  02111-1307  USA
 */

package jacomma.icm.io.imp;

import jacomma.icm.io.EncObject;
import jacomma.icm.io.EncObjectType;

/**
 * TBA
 **/
public class EncObjectImp implements EncObject {

	EncObjectType type_;
	Object value_;
	String signature_;
	
	int hc_;

	public EncObjectImp( EncObjectType type, Object val ) {
		type_ = type;
		value_ = val;
		
		hc_ = type_.hashCode() ^ value_.hashCode();
	}

	public EncObjectImp( EncObjectType type, Object val, String sig ) {
		this( type, val );
		signature_ = sig;
		
		hc_ ^= signature_.hashCode();
	}
	
	public int hashCode() {
		return hc_;
	}

	public boolean equals( Object obj ) {
		try {
			return type_.equals( ((EncObject)obj).getType() )
				&& ( (value_ == null) ?
					 (((EncObject)obj).getValue() == null) :
					 value_.equals( ((EncObject)obj).getValue() ) )
				&& ( (signature_ == null) ? 
					 (((EncObject)obj).getSignature() == null) : 
					 signature_.equals( ((EncObject)obj).getSignature() ) );
		} catch ( ClassCastException exc ) {
			return false;
		}
	}

    public EncObjectType getType() {
		return type_;
	}

	public Object getValue() {
		return value_;
	}
	
	public String getSignature() {
		return signature_;
	}

	public void setSignature( String s ) {
		signature_ = s;
		hc_ = type_.hashCode() ^ value_.hashCode() ^ s.hashCode();
	}


}