001    /*
002     * Copyright (C) 2012 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    
024    public abstract class AbstractFSDriver<H> implements FSDriver<H> {
025    
026      public H child(H handle, String name) throws IOException {
027        if (handle == null) {
028          throw new NullPointerException();
029        }
030        if (name == null) {
031          throw new NullPointerException();
032        }
033        for (H child : children(handle)) {
034          String childName = name(child);
035          if (childName.equals(name)) {
036            return child;
037          }
038        }
039        return null;
040      }
041    }