Frames | No Frames |
1: /** 2: * ================================================ 3: * LibLoader : a free Java resource loading library 4: * ================================================ 5: * 6: * Project Info: http://reporting.pentaho.org/libloader/ 7: * 8: * (C) Copyright 2006, by Pentaho Corporation and Contributors. 9: * 10: * This library is free software; you can redistribute it and/or modify it under the terms 11: * of the GNU Lesser General Public License as published by the Free Software Foundation; 12: * either version 2.1 of the License, or (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16: * See the GNU Lesser General Public License for more details. 17: * 18: * You should have received a copy of the GNU Lesser General Public License along with this 19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 20: * Boston, MA 02111-1307, USA. 21: * 22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 23: * in the United States and other countries.] 24: * 25: * 26: * ------------ 27: * $Id: Resource.java 2713 2007-04-01 13:43:18Z taqua $ 28: * ------------ 29: * (C) Copyright 2006, by Pentaho Corporation. 30: */ 31: package org.jfree.resourceloader; 32: 33: import java.io.Serializable; 34: 35: /** 36: * A resource is a wrapper around the final product. It shall not hold any 37: * references to the ResourceData object used to create the resource (to allow 38: * efficient 2-stage caching). 39: * 40: * Although this interfaces declares to be serializable, this might not be the 41: * case for some of the content contained in the resource object. Cache 42: * implementors should be aware of that issue and should act accordingly 43: * (for instance by not caching that object). 44: * 45: * @author Thomas Morgner 46: */ 47: public interface Resource extends Serializable 48: { 49: public Object getResource () throws ResourceException; 50: 51: public long getVersion(ResourceKey key); 52: 53: /** 54: * The primary source is also included in this set. The dependencies are 55: * given as ResourceKey objects. The keys itself do not hold any state 56: * information. 57: * 58: * The dependencies do not track deep dependencies. So if Resource A depends 59: * on Resource B which depends on Resource C, then A only knows about B, not 60: * C. 61: * 62: * @return 63: */ 64: public ResourceKey[] getDependencies(); 65: public ResourceKey getSource(); 66: }