/**
 * This file is part of the CRISTAL-iSE kernel.
 * Copyright (c) 2001-2014 The CRISTAL Consortium. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * http://www.fsf.org/licensing/licenses/lgpl.html
 */
/**
 *
 */
package com.c2kernel.utils;

import com.c2kernel.common.InvalidDataException;
import com.c2kernel.common.ObjectNotFoundException;
import com.c2kernel.entity.proxy.ItemProxy;
import com.c2kernel.lifecycle.instance.stateMachine.StateMachine;
import com.c2kernel.persistency.ClusterStorage;
import com.c2kernel.persistency.ClusterStorageException;
import com.c2kernel.persistency.outcome.Viewpoint;
import com.c2kernel.process.Gateway;

public class StateMachineCache extends DescriptionObjectCache<StateMachine> {

	
	@Override
	public String getDefRoot() {
		return "/desc/StateMachine";
	}
	
	@Override
	public StateMachine loadObject(String name, int version, ItemProxy proxy) throws ObjectNotFoundException, InvalidDataException {
		StateMachine thisStateMachine;
        Viewpoint smView = (Viewpoint)proxy.getObject(ClusterStorage.VIEWPOINT + "/StateMachine/" + version);
        String marshalledSM;
		try {
			marshalledSM = smView.getOutcome().getData();
		} catch (ClusterStorageException ex) {
			Logger.error(ex);
			throw new ObjectNotFoundException("Problem loading State Machine "+name+" v"+version+": "+ex.getMessage(), "");
		}
		try {
			thisStateMachine = (StateMachine)Gateway.getMarshaller().unmarshall(marshalledSM);
			thisStateMachine.validate();
		} catch (Exception ex) {
			Logger.error(ex);
			throw new InvalidDataException("Could not unmarshall State Machine '"+name+"' v"+version+": "+ex.getMessage(), "");
		}
		thisStateMachine.setName(name);
		thisStateMachine.setVersion(version);
        return thisStateMachine;
	}

}