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 * StreamContentLocation.java 027 * ------------ 028 * (C) Copyright 2006, by Pentaho Corporation. 029 */ 030 031 package org.jfree.repository.stream; 032 033 import org.jfree.repository.ContentCreationException; 034 import org.jfree.repository.ContentEntity; 035 import org.jfree.repository.ContentIOException; 036 import org.jfree.repository.ContentItem; 037 import org.jfree.repository.ContentLocation; 038 import org.jfree.repository.Repository; 039 040 /** 041 * Creation-Date: 13.11.2006, 17:23:40 042 * 043 * @author Thomas Morgner 044 */ 045 public class StreamContentLocation implements ContentLocation 046 { 047 private ContentItem contentItem; 048 private StreamRepository repository; 049 private static final ContentEntity[] EMPTY_CONTENT_ENTITY = new ContentEntity[0]; 050 051 public StreamContentLocation(final StreamRepository repository) 052 { 053 this.repository = repository; 054 } 055 056 public ContentEntity[] listContents() throws ContentIOException 057 { 058 if (contentItem == null) 059 { 060 return EMPTY_CONTENT_ENTITY; 061 } 062 else 063 { 064 return new ContentEntity[]{contentItem}; 065 } 066 } 067 068 public ContentEntity getEntry(final String name) throws ContentIOException 069 { 070 if (contentItem == null) 071 { 072 throw new ContentIOException("No such item"); 073 } 074 if (contentItem.getName().equals(name)) 075 { 076 return contentItem; 077 } 078 throw new ContentIOException("No such item"); 079 } 080 081 public ContentItem createItem(final String name) throws ContentCreationException 082 { 083 if (contentItem == null) 084 { 085 contentItem = new StreamContentItem(name, this, 086 repository.getInputStream(), repository.getOutputStream()); 087 return contentItem; 088 } 089 throw new ContentCreationException 090 ("Failed to create the item. Item already there"); 091 } 092 093 public ContentLocation createLocation(final String name) 094 throws ContentCreationException 095 { 096 throw new ContentCreationException 097 ("Failed to create the item. Item already there"); 098 } 099 100 public boolean exists(final String name) 101 { 102 if (contentItem == null) 103 { 104 return false; 105 } 106 return contentItem.getName().equals(name); 107 } 108 109 public String getName() 110 { 111 return "root"; 112 } 113 114 public Object getContentId() 115 { 116 return getName(); 117 } 118 119 public Object getAttribute(final String domain, final String key) 120 { 121 return null; 122 } 123 124 public boolean setAttribute(final String domain, final String key, final Object value) 125 { 126 return false; 127 } 128 129 public ContentLocation getParent() 130 { 131 return null; 132 } 133 134 public Repository getRepository() 135 { 136 return repository; 137 } 138 139 public boolean delete() 140 { 141 return false; 142 } 143 }