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/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2006 - 2009 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.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 Class getTargetType();
public boolean isTemporaryResult();
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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