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/*******************************************************************************
 * Copyright (c) 2008, 2009 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0, which accompanies this distribution
 * and is available at http://www.eclipse.org/legal/epl-v10.html.
 * 
 * Contributors:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.core;

/**
 * Listeners are notified whenever anything in the JPA resource model changes.
 * 
 * Provisional API: This interface is part of an interim API that is still
 * under development and expected to change significantly before reaching
 * stability. It is available at this early stage to solicit feedback from
 * pioneering adopters on the understanding that any code that uses this API
 * will almost certainly be broken (repeatedly) as the API evolves.
 */
public interface JpaResourceModel 
{
	/**
	 * Return the resource type of the model.  This may potentially change.
	 */
	JpaResourceType getResourceType();
	
	/**
	 * Changes to the resource model result in events.
	 * In particular, the JPA project performs an "update" whenever a resource
	 * model changes.
	 */
	void addResourceModelListener(JpaResourceModelListener listener);

	/**
	 * @see #addResourceModelListener(ResourceModelListener)
	 */
	void removeResourceModelListener(JpaResourceModelListener listener);
}