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: * BeginReportHandler.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.ReportProcessingException;
32: import org.jfree.report.event.ReportEvent;
33:
34: /**
35: * Creation-Date: 03.07.2007, 13:05:16
36: *
37: * @author Thomas Morgner
38: */
39: public class BeginReportHandler implements AdvanceHandler {
40: public static final AdvanceHandler HANDLER = new BeginReportHandler();
41:
42: private BeginReportHandler() {
43: }
44:
45: public int getEventCode() {
46: return ReportEvent.REPORT_INITIALIZED;
47: }
48:
49: public boolean isFinish() {
50: return false;
51: }
52:
53: public ProcessState advance(final ProcessState state) {
54: if (!state.getFlowController().getMasterRow()
55: .getExpressionDataRow().isValid()) {
56: throw new IllegalStateException(
57: "The expression data-row must be valid upon the start of the report processing.");
58: }
59:
60: final ProcessState next = state.deriveForAdvance();
61: next.fireReportEvent();
62: return next;
63: }
64:
65: public ProcessState commit(final ProcessState next)
66: throws ReportProcessingException {
67: next.setAdvanceHandler(ReportHeaderHandler.HANDLER);
68: return next;
69: }
70: }
|