01: /**
02: * ===========================================
03: * JFreeReport : a free Java reporting library
04: * ===========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2001-2007, by Object Refinery Ltd, 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: * JoinDetailsHandler.java
27: * ------------
28: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
29: */package org.jfree.report.states.process;
30:
31: import org.jfree.report.Group;
32: import org.jfree.report.ReportProcessingException;
33: import org.jfree.report.event.ReportEvent;
34: import org.jfree.report.states.datarow.DefaultFlowController;
35:
36: /**
37: * This delays the actual test on whether the current detail-group should be finished until the subreports have been
38: * processed. The subreports can influence this test by declaring output-parameters.
39: *
40: * @author Thomas Morgner
41: */
42: public class JoinDetailsHandler implements AdvanceHandler {
43: public static final AdvanceHandler HANDLER = new JoinDetailsHandler();
44:
45: private JoinDetailsHandler() {
46: }
47:
48: public int getEventCode() {
49: return ReportEvent.ITEMS_ADVANCED
50: | ProcessState.ARTIFICIAL_EVENT_CODE;
51: }
52:
53: public ProcessState advance(final ProcessState state)
54: throws ReportProcessingException {
55: return state.deriveForAdvance();
56: }
57:
58: public ProcessState commit(final ProcessState next)
59: throws ReportProcessingException {
60: final DefaultFlowController fc = next.getFlowController()
61: .performAdvance();
62: final Group group = next.getReport().getGroup(
63: next.getCurrentGroupIndex());
64: final DefaultFlowController cfc = fc.performCommit();
65: if (ProcessState.isLastItemInGroup(group, fc.getMasterRow(),
66: cfc.getMasterRow())) {
67: next.setFlowController(fc);
68: next.setAdvanceHandler(EndDetailsHandler.HANDLER);
69: } else {
70: next.setFlowController(cfc);
71: next.setAdvanceHandler(ProcessDetailsHandler.HANDLER);
72: }
73: return next;
74: }
75:
76: public boolean isFinish() {
77: return false;
78: }
79: }
|