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: GroupReadHandler.java 3525 2007-10-16 11:43:48Z tmorgner $
27: * ------------
28: * (C) Copyright 2000-2005, by Object Refinery Limited.
29: * (C) Copyright 2005-2007, by Pentaho Corporation.
30: */package org.jfree.report.modules.factories.report.flow;
31:
32: import org.jfree.report.structure.Element;
33: import org.jfree.report.structure.Group;
34: import org.jfree.xmlns.parser.XmlReadHandler;
35: import org.jfree.xmlns.parser.ParseException;
36: import org.xml.sax.Attributes;
37: import org.xml.sax.SAXException;
38:
39: /**
40: * Creation-Date: 09.04.2006, 15:37:31
41: *
42: * @author Thomas Morgner
43: */
44: public class GroupReadHandler extends SectionReadHandler {
45: private Group group;
46: private GroupingExpressionReadHandler groupingExpressionReadHandler;
47:
48: public GroupReadHandler() {
49: group = new Group();
50: }
51:
52: /**
53: * Returns the handler for a child element.
54: *
55: * @param tagName the tag name.
56: * @param atts the attributes.
57: * @return the handler or null, if the tagname is invalid.
58: * @throws SAXException if there is a parsing error.
59: */
60: protected XmlReadHandler getHandlerForChild(final String uri,
61: final String tagName, final Attributes atts)
62: throws SAXException {
63: final XmlReadHandler base = super .getHandlerForChild(uri,
64: tagName, atts);
65: if (base != null) {
66: return base;
67: }
68: if (FlowReportFactoryModule.NAMESPACE.equals(uri)) {
69: if ("grouping-expression".equals(tagName)) {
70: groupingExpressionReadHandler = new GroupingExpressionReadHandler();
71: return groupingExpressionReadHandler;
72: }
73: }
74: return null;
75: }
76:
77: /**
78: * Done parsing.
79: *
80: * @throws SAXException if there is a parsing error.
81: */
82: protected void doneParsing() throws SAXException {
83: if (groupingExpressionReadHandler == null) {
84: throw new ParseException(
85: "Required element 'grouping-expression' is missing.",
86: getLocator());
87: }
88:
89: super .doneParsing();
90: final Group group = (Group) getElement();
91: group.setGroupingExpression(groupingExpressionReadHandler
92: .getExpression());
93: }
94:
95: protected Element getElement() {
96: return group;
97: }
98: }
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