/*
 * Copyright (C) 2006 Alfresco, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * 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 General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * As a special exception to the terms and conditions of version 2.0 of
 * the GPL, you may redistribute this Program in connection with Free/Libre
 * and Open Source Software ("FLOSS") applications as described in Alfresco's
 * FLOSS exception.  You should have recieved a copy of the text describing
 * the FLOSS exception, and it is also available here:
 * http://www.alfresco.com/legal/licensing" */

package org.alfresco.repo.avm;

import java.util.List;

/**
 * DAO for history links.
 * @author britt
 */
public interface HistoryLinkDAO
{
    /**
     * Save and unsaved HistoryLink.
     * @param link
     */
    public void save(HistoryLink link);
    
    /**
     * Get the history link with the given descendent.
     * @param descendent The descendent.
     * @return The HistoryLink or null if not found.
     */
    public HistoryLink getByDescendent(AVMNode descendent);
    
    /**
     * Get all the descendents of a node.
     * @param ancestor The ancestor node.
     * @return A List of AVMNode descendents.
     */
    public List<HistoryLink> getByAncestor(AVMNode ancestor);

    /**
     * Delete a HistoryLink
     * @param link The link to delete.
     */
    public void delete(HistoryLink link);
}