001    /*
002     * Copyright (C) 2003-2009 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    package org.crsh.util;
020    
021    import java.io.Closeable;
022    import java.io.IOException;
023    
024    /**
025     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
026     * @version $Revision$
027     */
028    public class Safe {
029    
030      public static void close(Closeable closeable) {
031        if (closeable != null) {
032          try {
033            closeable.close();
034          }
035          catch (IOException ignore) {
036          }
037        }
038      }
039    
040      public static <T extends Throwable> void rethrow(Class<T> throwableClass, Throwable cause) throws T {
041        T throwable;
042    
043        //
044        try {
045          throwable = throwableClass.newInstance();
046        }
047        catch (Exception e) {
048          throw new AssertionError(e);
049        }
050    
051        //
052        throwable.initCause(cause);
053    
054        //
055        throw throwable;
056      }
057    }