DefaultMemento.java

/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <hr>
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* This file has been modified by the OpenOLAT community. Changes are licensed
* under the Apache 2.0 license as the original file.  
* <p>
*/ 

package org.olat.core.util.memento;

/**
 * Description:<br>
 * TODO: patrick Class Description for DefaultMemento
 * 
 * <P>
 * Initial Date:  Nov 25, 2005 <br>
 *
 * @author patrick
 */
public class DefaultMemento extends Memento {

	private int version=0;
	/**
	 * 
	 */
	public DefaultMemento() {
		super();
	}
	/**
	 * 
	 * @see org.olat.core.util.memento.Memento#resolveVersionIssues()
	 */
	protected void resolveVersionIssues() {
		// /*
		// * default implementation nothing to do
		// *
		// * otherwise this would be something like
		// * ----------------------------------------------------------------------
		// * int currentVersion = getVersion()
		// * int instanceVersion = ((Integer)mementoState.get(VERSION)).intValue()
		// * if(instanceVersion <= 1){
		// * do upgrade from version 0 to version 1
		// * }
		// * if(instanceVersion <= 2){
		// * do upgrade from version 1 to version 2
		// * }
		// * .
		// * .
		// * .
		// * if(instanceVersion <= currentVersion){
		// * do upgrade from version previous version to current version
		// * }
		// * !!very important now to
		// * mementoState.put(VERSION,new Integer(currentVersion));
		// *
		// *
		// */
		}
	/**
	 * 
	 * @see org.olat.core.util.memento.Memento#getVersion()
	 */
	protected int getVersion() {
		// default implementation just return 0
		return version;
	}

}