01: /*
02: * ============================================================================
03: * GNU Lesser General Public License
04: * ============================================================================
05: *
06: * JasperReports - Free Java report-generating library.
07: * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
08: *
09: * This library is free software; you can redistribute it and/or
10: * modify it under the terms of the GNU Lesser General Public
11: * License as published by the Free Software Foundation; either
12: * 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,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17: * Lesser General Public License for more details.
18: *
19: * You should have received a copy of the GNU Lesser General Public
20: * License along with this library; if not, write to the Free Software
21: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22: *
23: * JasperSoft Corporation
24: * 303 Second Street, Suite 450 North
25: * San Francisco, CA 94107
26: * http://www.jaspersoft.com
27: */
28: package net.sf.jasperreports.engine.fill;
29:
30: import org.apache.commons.javaflow.Continuation;
31:
32: /**
33: * Implemetation of {@link net.sf.jasperreports.engine.fill.JRSubreportRunner JRSubreportRunner}
34: * using <a href="http://jakarta.apache.org/commons/sandbox/javaflow/">Javaflow</a> continuations.
35: *
36: * @author Lucian Chirita (lucianc@users.sourceforge.net)
37: * @version $Id: JRContinuationSubreportRunner.java 1229 2006-04-19 10:27:35Z teodord $
38: */
39: public class JRContinuationSubreportRunner extends JRSubreportRunnable
40: implements JRSubreportRunner {
41: private Continuation continuation;
42:
43: public JRContinuationSubreportRunner(JRFillSubreport fillSubreport) {
44: super (fillSubreport);
45: }
46:
47: public boolean isFilling() {
48: return continuation != null;
49: }
50:
51: public JRSubreportRunResult start() {
52: continuation = Continuation.startWith(this );
53: return runResult();
54: }
55:
56: public JRSubreportRunResult resume() {
57: continuation = Continuation.continueWith(continuation);
58: return runResult();
59: }
60:
61: public void reset() {
62: continuation = null;
63: }
64:
65: public void cancel() {
66: }
67:
68: public void suspend() {
69: Continuation.suspend();
70: }
71: }
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