/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.util;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;
/**
* A Wrapper stream that does never calls close on its parent. This implementation is needed when creating
* ZipOutputStream, as the final ZipDirectory is written when close is called on the ZipOutputSteam.
*
* @author Thomas Morgner
*/
public class NoCloseOutputStream extends FilterOutputStream {
/**
* Create a new NoCloseOutputStream with the given output stream a parent.
*
* @param out
* the parent stream
*/
public NoCloseOutputStream( final OutputStream out ) {
super( out );
if ( out == null ) {
throw new NullPointerException( "Given Output Stream is null!" );
}
}
/**
* Closes this output stream and releases any system resources associated with the stream, but does not close the
* underlying output stream.
* <p/>
* The <code>close</code> method of <code>FilterOutputStream</code> calls its <code>flush</code> method.
*
* @throws IOException
* if an I/O error occurs.
* @see FilterOutputStream#flush()
* @see FilterOutputStream#out
*/
public void close() throws IOException {
flush();
// do not close the parent stream ... !
}
}