01: /**
02: * ========================================
03: * JFreeReport : a free Java report library
04: * ========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * $Id: NoCloseOutputStream.java 3048 2007-07-28 18:02:42Z tmorgner $
27: * ------------
28: * (C) Copyright 2000-2005, by Object Refinery Limited.
29: * (C) Copyright 2005-2007, by Pentaho Corporation.
30: */package org.jfree.report.util;
31:
32: import java.io.FilterOutputStream;
33: import java.io.IOException;
34: import java.io.OutputStream;
35:
36: /**
37: * A Wrapper stream that does never calls close on its parent. This implementation is
38: * needed when creating ZipOutputStream, as the final ZipDirectory is written when close
39: * is called on the ZipOutputSteam.
40: *
41: * @author Thomas Morgner
42: */
43: public class NoCloseOutputStream extends FilterOutputStream {
44: /**
45: * Create a new NoCloseOutputStream with the given output stream a parent.
46: *
47: * @param out the parent stream
48: */
49: public NoCloseOutputStream(final OutputStream out) {
50: super (out);
51: if (out == null) {
52: throw new NullPointerException(
53: "Given Output Stream is null!");
54: }
55: }
56:
57: /**
58: * Closes this output stream and releases any system resources associated with the
59: * stream, but does not close the underlying output stream.
60: * <p/>
61: * The <code>close</code> method of <code>FilterOutputStream</code> calls its
62: * <code>flush</code> method.
63: *
64: * @throws IOException if an I/O error occurs.
65: * @see FilterOutputStream#flush()
66: * @see FilterOutputStream#out
67: */
68: public void close() throws IOException {
69: flush();
70: // do not close the parent stream ... !
71: }
72: }
|