org.eclipse.emf.emfstore.client/src/org/eclipse/emf/emfstore/client/model/impl/OperationPersister.java

/*******************************************************************************
 * Copyright 2011 Chair for Applied Software Engineering,
 * Technische Universitaet Muenchen.
 * All rights reserved. This program and the accompanying materials
 * are made available under the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 ******************************************************************************/
package org.eclipse.emf.emfstore.client.model.impl;

import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.emfstore.client.model.Configuration;
import org.eclipse.emf.emfstore.client.model.changeTracking.commands.CommandObserver;

/**
 * The operation persister may be registered as an {@link CommandObserver} on a given
 * stack and saves each time when a command has been completed, as long as {@link Configuration#isAutoSaveEnabled()}
 * returns true.
 * 
 * @author emueller
 * 
 */
public class OperationPersister implements CommandObserver {

	private final ProjectSpaceBase projectSpace;

	/**
	 * Constructor.
	 * 
	 * @param projectSpace
	 *            the project space holding the operations to be saved
	 */
	public OperationPersister(ProjectSpaceBase projectSpace) {
		this.projectSpace = projectSpace;
	}

	/**
	 * 
	 * {@inheritDoc}
	 * 
	 * @see org.eclipse.emf.emfstore.client.model.changeTracking.commands.CommandObserver#commandStarted(org.eclipse.emf.common.command.Command)
	 */
	public void commandStarted(Command command) {

	}

	/**
	 * 
	 * {@inheritDoc}
	 * 
	 * @see org.eclipse.emf.emfstore.client.model.changeTracking.commands.CommandObserver#commandCompleted(org.eclipse.emf.common.command.Command)
	 */
	public void commandCompleted(Command command) {
		if (Configuration.isAutoSaveEnabled()) {
			projectSpace.save();
		}
	}

	/**
	 * 
	 * {@inheritDoc}
	 * 
	 * @see org.eclipse.emf.emfstore.client.model.changeTracking.commands.CommandObserver#commandFailed(org.eclipse.emf.common.command.Command,
	 *      java.lang.Exception)
	 */
	public void commandFailed(Command command, Exception exception) {

	}
}