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/**
* ================================================
* LibLoader : a free Java resource loading library
* ================================================
*
* Project Info: http://reporting.pentaho.org/libloader/
*
* (C) Copyright 2006, by Pentaho Corporation and Contributors.
*
* 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 2.1 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;
* without 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.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
*
* ------------
* $Id: Resource.java 2713 2007-04-01 13:43:18Z taqua $
* ------------
* (C) Copyright 2006, by Pentaho Corporation.
*/
package org.jfree.resourceloader;
import java.io.Serializable;
/**
* A resource is a wrapper around the final product. It shall not hold any
* references to the ResourceData object used to create the resource (to allow
* efficient 2-stage caching).
*
* Although this interfaces declares to be serializable, this might not be the
* case for some of the content contained in the resource object. Cache
* implementors should be aware of that issue and should act accordingly
* (for instance by not caching that object).
*
* @author Thomas Morgner
*/
public interface Resource extends Serializable
{
public Object getResource () throws ResourceException;
public long getVersion(ResourceKey key);
/**
* The primary source is also included in this set. The dependencies are
* given as ResourceKey objects. The keys itself do not hold any state
* information.
*
* The dependencies do not track deep dependencies. So if Resource A depends
* on Resource B which depends on Resource C, then A only knows about B, not
* C.
*
* @return
*/
public ResourceKey[] getDependencies();
public ResourceKey getSource();
}
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