ReadContext.java

/* This file is part of the db4o object database http://www.db4o.com

Copyright (C) 2004 - 2011  Versant Corporation http://www.versant.com

db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.

db4o 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 General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program.  If not, see http://www.gnu.org/licenses/. */
package com.db4o.marshall;

import com.db4o.typehandlers.*;

/**
 * this interface is passed to internal class {@link TypeHandler4}
 * when instantiating objects.
 */
public interface ReadContext extends Context, ReadBuffer {

    /**
     * Interprets the current position in the context as 
     * an ID and returns the object with this ID.
     * @return the object
     */
    public Object readObject();

    
    /**
     * reads sub-objects, in cases where the {@link TypeHandler4}
     * is known.
     */
    public Object readObject(TypeHandler4 handler);

}