/*
 * This file is part of ***  M y C o R e  ***
 * See http://www.mycore.de/ for details.
 *
 * MyCoRe 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 3 of the License, or
 * (at your option) any later version.
 *
 * MyCoRe 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 MyCoRe.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.mycore.datamodel.common;

import org.mycore.common.events.MCREvent;
import org.mycore.common.events.MCREventHandlerBase;
import org.mycore.datamodel.metadata.MCRDerivate;
import org.mycore.datamodel.metadata.MCRObject;

/**
 * This class manages all operations of the LinkTables for operations of an object.
 * 
 * @author Jens Kupferschmidt
 */
public class MCRLinkTableEventHandler extends MCREventHandlerBase {

    /**
     * This method add the data to the link and classification table via MCRLinkTableManager.
     * 
     * @param evt
     *            the event that occured
     * @param obj
     *            the MCRObject that caused the event
     */
    @Override
    protected final void handleObjectCreated(MCREvent evt, MCRObject obj) {
        MCRLinkTableManager.instance().create(obj);
    }

    /**
     * This method update the data to the link and classification table via MCRLinkTableManager.
     * 
     * @param evt
     *            the event that occured
     * @param obj
     *            the MCRObject that caused the event
     */
    @Override
    protected final void handleObjectUpdated(MCREvent evt, MCRObject obj) {
        handleObjectRepaired(evt, obj);
    }

    /**
     * This method delete the data from the link and classification table via MCRLinkTableManager.
     * 
     * @param evt
     *            the event that occured
     * @param obj
     *            the MCRObject that caused the event
     */
    @Override
    protected final void handleObjectDeleted(MCREvent evt, MCRObject obj) {
        MCRLinkTableManager.instance().delete(obj.getId());
    }

    /**
     * This method repair the data from the link and classification table via MCRLinkTableManager.
     * 
     * @param evt
     *            the event that occured
     * @param obj
     *            the MCRObject that caused the event
     */
    @Override
    protected final void handleObjectRepaired(MCREvent evt, MCRObject obj) {
        MCRLinkTableManager.instance().update(obj.getId());
    }

    @Override
    protected void handleDerivateCreated(MCREvent evt, MCRDerivate der) {
        MCRLinkTableManager.instance().create(der);
    }

    @Override
    protected void handleDerivateRepaired(MCREvent evt, MCRDerivate der) {
        MCRLinkTableManager.instance().update(der.getId());
    }

    @Override
    protected void handleDerivateUpdated(MCREvent evt, MCRDerivate der) {
        handleDerivateRepaired(evt, der);
    }

    @Override
    protected void handleDerivateDeleted(MCREvent evt, MCRDerivate der) {
        MCRLinkTableManager.instance().delete(der.getId());
    }
}
