001    /*
002     * Databinder: a simple bridge from Wicket to Hibernate
003     * Copyright (C) 2006  Nathan Hamblen nathan@technically.us
004    
005     * This library is free software; you can redistribute it and/or
006     * modify it under the terms of the GNU Lesser General Public
007     * License as published by the Free Software Foundation; either
008     * version 2.1 of the License, or (at your option) any later version.
009     * 
010     * This library is distributed in the hope that it will be useful,
011     * but WITHOUT ANY WARRANTY; without even the implied warranty of
012     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013     * Lesser General Public License for more details.
014     * 
015     * You should have received a copy of the GNU Lesser General Public
016     * License along with this library; if not, write to the Free Software
017     * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
018     */
019    package net.databinder.models;
020    
021    import org.apache.wicket.model.IModel;
022    
023    /**
024     * Model associated with an object that can be "bound" to persistent storage.
025     * @author Nathan Hamblen
026     */
027    public interface BindingModel extends IModel {
028            /**
029             * @return true if object is bound to persistent storage
030             */
031            public boolean isBound();
032            
033            /**
034             * Discard any attached object and reset to a new unsaved object 
035             */
036            public void unbind();
037    }