001 /** 002 * =========================================================== 003 * LibRepository : a free Java content repository access layer 004 * =========================================================== 005 * 006 * Project Info: http://jfreereport.pentaho.org/librepository/ 007 * 008 * (C) Copyright 2006, by Pentaho Corporation and Contributors. 009 * 010 * This library is free software; you can redistribute it and/or modify it under the terms 011 * of the GNU Lesser General Public License as published by the Free Software Foundation; 012 * either version 2.1 of the License, or (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 016 * See the GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public License along with this 019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 020 * Boston, MA 02111-1307, USA. 021 * 022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 023 * in the United States and other countries.] 024 * 025 * ------------ 026 * FileContentEntity.java 027 * ------------ 028 * (C) Copyright 2006, by Pentaho Corporation. 029 */ 030 031 package org.jfree.repository.file; 032 033 import java.io.File; 034 import java.util.Date; 035 036 import org.jfree.repository.ContentEntity; 037 import org.jfree.repository.ContentLocation; 038 import org.jfree.repository.LibRepositoryBoot; 039 import org.jfree.repository.Repository; 040 041 /** 042 * Creation-Date: 13.11.2006, 12:01:47 043 * 044 * @author Thomas Morgner 045 */ 046 public abstract class FileContentEntity implements ContentEntity 047 { 048 private File backend; 049 private ContentLocation parent; 050 private Repository repository; 051 052 protected FileContentEntity(final ContentLocation parent, final File backend) 053 { 054 if (backend == null) 055 { 056 throw new NullPointerException("Backend file must be given."); 057 } 058 if (parent == null) 059 { 060 throw new NullPointerException("Parent file must be given."); 061 } 062 this.repository = parent.getRepository(); 063 this.parent = parent; 064 this.backend = backend; 065 } 066 067 protected FileContentEntity(final Repository repository, final File backend) 068 { 069 if (backend == null) 070 { 071 throw new NullPointerException("Backend file must be given."); 072 } 073 if (repository == null) 074 { 075 throw new NullPointerException("Repository file must be given."); 076 } 077 this.repository = repository; 078 this.backend = backend; 079 } 080 081 public Repository getRepository() 082 { 083 return repository; 084 } 085 086 public String getName() 087 { 088 return backend.getName(); 089 } 090 091 protected File getBackend() 092 { 093 return backend; 094 } 095 096 public Object getContentId() 097 { 098 return getName(); 099 } 100 101 public Object getAttribute(final String domain, final String key) 102 { 103 if (LibRepositoryBoot.REPOSITORY_DOMAIN.equals(domain)) 104 { 105 if (LibRepositoryBoot.SIZE_ATTRIBUTE.equals(key)) 106 { 107 return new Long(backend.length()); 108 } 109 else if (LibRepositoryBoot.VERSION_ATTRIBUTE.equals(key)) 110 { 111 return new Date(backend.lastModified()); 112 } 113 } 114 return null; 115 } 116 117 public boolean setAttribute(final String domain, final String key, final Object value) 118 { 119 if (LibRepositoryBoot.REPOSITORY_DOMAIN.equals(domain)) 120 { 121 if (LibRepositoryBoot.VERSION_ATTRIBUTE.equals(key)) 122 { 123 if (value instanceof Date) 124 { 125 final Date date = (Date) value; 126 return backend.setLastModified(date.getTime()); 127 } 128 else if (value instanceof Number) 129 { 130 final Number time = (Number) value; 131 return backend.setLastModified(time.longValue()); 132 } 133 } 134 } 135 return false; 136 } 137 138 public ContentLocation getParent() 139 { 140 return parent; 141 } 142 143 public boolean delete() 144 { 145 return backend.delete(); 146 } 147 }