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     * FileContentLocation.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.io.IOException;
035    
036    import org.jfree.io.IOUtils;
037    import org.jfree.repository.ContentCreationException;
038    import org.jfree.repository.ContentEntity;
039    import org.jfree.repository.ContentIOException;
040    import org.jfree.repository.ContentItem;
041    import org.jfree.repository.ContentLocation;
042    import org.jfree.repository.Repository;
043    
044    /**
045     * Creation-Date: 13.11.2006, 12:01:11
046     *
047     * @author Thomas Morgner
048     */
049    public class FileContentLocation extends FileContentEntity implements ContentLocation
050    {
051      public FileContentLocation(final ContentLocation parent, final File backend)
052      {
053        super(parent, backend);
054      }
055    
056      public FileContentLocation(final Repository repository, final File backend)
057      {
058        super(repository, backend);
059      }
060    
061      public ContentEntity[] listContents() throws ContentIOException
062      {
063        final File file = getBackend();
064        final File[] files = file.listFiles();
065        final ContentEntity[] entities = new ContentEntity[files.length];
066        for (int i = 0; i < files.length; i++)
067        {
068          final File child = files[i];
069          if (child.isDirectory())
070          {
071            entities[i] = new FileContentLocation(this, child);
072          }
073          else if (child.isFile())
074          {
075            entities[i] = new FileContentLocation(this, child);
076          }
077        }
078        return entities;
079      }
080    
081      public ContentEntity getEntry(final String name) throws ContentIOException
082      {
083        final File file = getBackend();
084        final File child = new File (file, name);
085        if (child.exists() == false)
086        {
087          throw new ContentIOException("Not found.");
088        }
089        try
090        {
091          if (IOUtils.getInstance().isSubDirectory(file, child))
092          {
093            throw new ContentIOException("Not sub-directory");
094          }
095        }
096        catch (IOException e)
097        {
098          throw new ContentIOException("IO Error.");
099        }
100    
101        if (child.isDirectory())
102        {
103          return new FileContentLocation(this, child);
104        }
105        else if (child.isFile())
106        {
107          return new FileContentItem(this, child);
108        }
109        else
110        {
111          throw new ContentIOException("Not File nor directory.");
112        }
113      }
114    
115      public ContentItem createItem(final String name) throws ContentCreationException
116      {
117        final File file = getBackend();
118        final File child = new File (file, name);
119        if (child.exists())
120        {
121          throw new ContentCreationException("File already exists.");
122        }
123        try
124        {
125          if (child.createNewFile() == false)
126          {
127            throw new ContentCreationException("Unable to create");
128          }
129          return new FileContentItem(this, child);
130        }
131        catch (IOException e)
132        {
133          throw new ContentCreationException("IOError while create");
134        }
135      }
136    
137      public ContentLocation createLocation(final String name)
138          throws ContentCreationException
139      {
140        final File file = getBackend();
141        final File child = new File (file, name);
142        if (child.exists())
143        {
144          throw new ContentCreationException("File already exists.");
145        }
146        if (child.mkdir() == false)
147        {
148          throw new ContentCreationException("Unable to create");
149        }
150        return new FileContentLocation(this, child);
151      }
152    
153      public boolean exists(final String name)
154      {
155        final File file = getBackend();
156        final File child = new File (file, name);
157        return (child.exists());
158      }
159    }