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     * ZipContentLocation.java
027     * ------------
028     * (C) Copyright 2006, by Pentaho Corporation.
029     */
030    
031    package org.jfree.repository.zipwriter;
032    
033    import java.util.HashMap;
034    import java.util.zip.ZipEntry;
035    import java.io.IOException;
036    
037    import org.jfree.repository.ContentLocation;
038    import org.jfree.repository.ContentEntity;
039    import org.jfree.repository.ContentIOException;
040    import org.jfree.repository.ContentItem;
041    import org.jfree.repository.ContentCreationException;
042    import org.jfree.repository.Repository;
043    import org.jfree.repository.RepositoryUtilities;
044    
045    /**
046     * Creation-Date: 01.12.2006, 21:13:24
047     *
048     * @author Thomas Morgner
049     */
050    public class ZipContentLocation implements ContentLocation
051    {
052      private HashMap entries;
053      private String name;
054      private String contentId;
055      private ContentLocation parent;
056      private ZipRepository repository;
057    
058      public ZipContentLocation(final ZipRepository repository,
059                                final ContentLocation parent,
060                                final String name)
061      {
062        this.repository = repository;
063        this.parent = parent;
064        this.name = name;
065        this.entries = new HashMap();
066        this.contentId = RepositoryUtilities.buildName(this, "/") + "/";
067      }
068    
069      public ContentEntity[] listContents() throws ContentIOException
070      {
071        return (ContentEntity[]) entries.values().toArray
072            (new ContentEntity[entries.size()]);
073      }
074    
075      public ContentEntity getEntry(final String name) throws ContentIOException
076      {
077        return (ContentEntity) entries.get(name);
078      }
079    
080      /**
081       * Creates a new data item in the current location. This method must never
082       * return null.
083       *
084       * @param name
085       * @return
086       * @throws org.jfree.repository.ContentCreationException
087       *          if the item could not be created.
088       */
089      public ContentItem createItem(final String name) throws ContentCreationException
090      {
091        if (entries.containsKey(name))
092        {
093          throw new ContentCreationException("Entry already exists");
094        }
095    
096        final ZipContentItem item = new ZipContentItem(name, repository, this);
097        entries.put (name, item);
098        return item;
099      }
100    
101      public ContentLocation createLocation(final String name)
102          throws ContentCreationException
103      {
104        if (entries.containsKey(name))
105        {
106          throw new ContentCreationException("Entry already exists");
107        }
108    
109        final ZipContentLocation item = new ZipContentLocation(repository, this, name);
110        entries.put (name, item);
111        if ("/".equals(this.contentId) == false)
112        {
113          try
114          {
115            final ZipEntry entry = new ZipEntry(contentId);
116            repository.writeDirectory(entry);
117          }
118          catch (IOException e)
119          {
120            throw new ContentCreationException("Failed to create directory.");
121          }
122        }
123        return item;
124      }
125    
126      public boolean exists(final String name)
127      {
128        return entries.containsKey(name);
129      }
130    
131      public String getName()
132      {
133        return name;
134      }
135    
136      public Object getContentId()
137      {
138        return contentId;
139      }
140    
141      public Object getAttribute(final String domain, final String key)
142      {
143        return null;
144      }
145    
146      public boolean setAttribute(final String domain, final String key, final Object value)
147      {
148        return false;
149      }
150    
151      public ContentLocation getParent()
152      {
153        return parent;
154      }
155    
156      public Repository getRepository()
157      {
158        return repository;
159      }
160    
161      public boolean delete()
162      {
163        return false;
164      }
165    }