001    /*
002     * Copyright (C) 2010 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.vfs.spi;
021    
022    import java.io.IOException;
023    import java.io.InputStream;
024    import java.net.URL;
025    
026    /**
027     * A driver.
028     *
029     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
030     * @version $Revision$
031     * @param <H> the handle generic type
032     */
033    public interface FSDriver<H> {
034    
035      /**
036       * Returns the root handle.
037       *
038       * @return the root handle
039       * @throws IOException any io exception
040       */
041      H root() throws IOException;
042    
043      String name(H handle) throws IOException;
044    
045      boolean isDir(H handle) throws IOException;
046    
047      H child(H handle, String name) throws IOException;
048    
049      Iterable<H> children(H handle) throws IOException;
050    
051      long getLastModified(H handle) throws IOException;
052    
053      InputStream open(H handle) throws IOException;
054    
055    }