1 /*
2 * JasperReports - Free Java Reporting Library.
3 * Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved.
4 * http://www.jaspersoft.com
5 *
6 * Unless you have purchased a commercial license agreement from Jaspersoft,
7 * the following license terms apply:
8 *
9 * This program is part of JasperReports.
10 *
11 * JasperReports is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * JasperReports is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
23 */
24 package net.sf.jasperreports.engine.fill;
25
26 import org.apache.commons.javaflow.api.continuable;
27
28 /**
29 * Abstract base for {@link java.lang.Runnable Runnable}-based
30 * {@link net.sf.jasperreports.engine.fill.JRSubreportRunner JRSubreportRunner}
31 * implementations.
32 *
33 * @author Lucian Chirita (lucianc@users.sourceforge.net)
34 */
35 public abstract class JRSubreportRunnable implements Runnable
36 {
37 private final JRFillSubreport fillSubreport;
38
39 private Throwable error;
40 private boolean running;
41
42 protected JRSubreportRunnable(JRFillSubreport fillSubreport)
43 {
44 this.fillSubreport = fillSubreport;
45 }
46
47 protected JRSubreportRunResult runResult()
48 {
49 return new JRSubreportRunResult(!running, error);
50 }
51
52 @Override
53 @continuable
54 public void run()
55 {
56 running = true;
57 error = null;
58
59 try
60 {
61 fillSubreport.fillSubreport();
62 }
63 catch (JRFillInterruptedException e)
64 {
65 //If the subreport filler was interrupted, we should remain silent
66 }
67 // we have to catch Throwable, because it is difficult to say what would happen with the master
68 // filler thread in case we don't
69 catch (Throwable t) //NOPMD
70 {
71 error = t;
72 }
73
74 running = false;
75 }
76
77 protected boolean isRunning()
78 {
79 return running;
80 }
81 }
82