/*
This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2010 Servoy BV
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your option) any
later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along
with this program; if not, see http://www.gnu.org/licenses or write to the Free
Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
*/
package com.servoy.j2db.persistence;
/**
* Interface for objects that can visit IVisitable structures.
*/
public interface IPersistVisitor
{
/**
* Value to return to continue a traversal.
*/
public static final Object CONTINUE_TRAVERSAL = null;
/**
* Value to return to continue a traversal but don't go deeper into it the tree
*/
public static final Object CONTINUE_TRAVERSAL_BUT_DONT_GO_DEEPER = new Object();
/**
* Value to return to continue a traversal but don't go up to the parent
*/
public static final Object CONTINUE_TRAVERSAL_BUT_DONT_GO_UP = new Object();
/**
* @returns continueTraversal
*/
public Object visit(IPersist o);
}