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 }