dxmap.java

用Java写的面相对象的数据库管理系统

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-2000 by SMB GmbH. All rights reserved.
//
// $Id: DxMap.java,v 1.5 2000/10/28 16:55:14 daniela Exp $

package org.ozoneDB.DxLib;

import java.io.*;

/**
 * 
 * 
 * @author <a href="http://www.softwarebuero.de/">SMB</a>
 * @version $Revision: 1.5 $Date: 2000/10/28 16:55:14 $
 */
public interface DxMap extends DxCollection {
    
    
    public boolean addForKey( Object obj, Object key );
    
    
    public Object elementForKey( Object key );
    
    
    /**
     * Returns the key for the given object, which has to be the same
     * object as stored in the map.
     */
    public Object keyForElement( Object obj );
    
    
    public Object removeForKey( Object key );
    
    
    public boolean removeAllKeys( DxCollection coll );
    
    
    /**
     * This method is not declared abstract because it does not need to
     * be implemented in any case.
     */
    public Object buildKey( Object obj );
    
    
    public boolean containsKey( Object key );
    
    
    public DxSet keySet();
    
    
    public DxSet elementSet();
}