001 /**
002 * ========================================
003 * JFreeReport : a free Java report library
004 * ========================================
005 *
006 * Project Info: http://reporting.pentaho.org/
007 *
008 * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009 *
010 * This library is free software; you can redistribute it and/or modify it under the terms
011 * of the GNU Lesser General Public License as published by the Free Software Foundation;
012 * either version 2.1 of the License, or (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016 * See the GNU Lesser General Public License for more details.
017 *
018 * You should have received a copy of the GNU Lesser General Public License along with this
019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020 * Boston, MA 02111-1307, USA.
021 *
022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023 * in the United States and other countries.]
024 *
025 * ------------
026 * $Id: SubReportReadHandler.java,v 1.9 2007/04/01 18:49:30 taqua Exp $
027 * ------------
028 * (C) Copyright 2000-2005, by Object Refinery Limited.
029 * (C) Copyright 2005-2007, by Pentaho Corporation.
030 */
031 package org.jfree.report.modules.factories.report.flow;
032
033 import java.util.ArrayList;
034
035 import org.jfree.report.structure.Element;
036 import org.jfree.report.structure.SubReport;
037 import org.jfree.xmlns.parser.StringReadHandler;
038 import org.jfree.xmlns.parser.XmlReadHandler;
039 import org.jfree.xmlns.parser.ParseException;
040 import org.xml.sax.Attributes;
041 import org.xml.sax.SAXException;
042
043 /**
044 * Creation-Date: 09.04.2006, 14:57:38
045 *
046 * @author Thomas Morgner
047 */
048 public class SubReportReadHandler extends SectionReadHandler
049 {
050 private SubReport subReport;
051 private ArrayList importParameters;
052 private ArrayList exportParameters;
053 private StringReadHandler queryReadHandler;
054
055 public SubReportReadHandler()
056 {
057 subReport = new SubReport();
058 importParameters = new ArrayList();
059 exportParameters = new ArrayList();
060 }
061
062 /**
063 * Starts parsing.
064 *
065 * @param attrs the attributes.
066 * @throws org.xml.sax.SAXException if there is a parsing error.
067 */
068 protected void startParsing(final Attributes attrs) throws SAXException
069 {
070 super.startParsing(attrs);
071 final String source = attrs.getValue(getUri(), "href");
072 if (source != null)
073 {
074 // start parsing ..
075 }
076 }
077
078 /**
079 * Returns the handler for a child element.
080 *
081 * @param tagName the tag name.
082 * @param atts the attributes.
083 * @return the handler or null, if the tagname is invalid.
084 * @throws SAXException if there is a parsing error.
085 */
086 protected XmlReadHandler getHandlerForChild(final String uri,
087 final String tagName,
088 final Attributes atts)
089 throws SAXException
090 {
091 XmlReadHandler base = super.getHandlerForChild(uri, tagName, atts);
092 if (base != null)
093 {
094 return base;
095 }
096 if (FlowReportFactoryModule.NAMESPACE.equals(uri))
097 {
098 if ("import-parameter".equals(tagName))
099 {
100 ParameterMappingReadHandler handler = new ParameterMappingReadHandler();
101 importParameters.add(handler);
102 return handler;
103 }
104 if ("export-parameter".equals(tagName))
105 {
106 ParameterMappingReadHandler handler = new ParameterMappingReadHandler();
107 exportParameters.add(handler);
108 return handler;
109 }
110 if ("query".equals(tagName))
111 {
112 queryReadHandler = new StringReadHandler();
113 return queryReadHandler;
114 }
115 }
116 return null;
117 }
118
119 /**
120 * Done parsing.
121 *
122 * @throws SAXException if there is a parsing error.
123 */
124 protected void doneParsing() throws SAXException
125 {
126 super.doneParsing();
127 SubReport report = (SubReport) getElement();
128 for (int i = 0; i < importParameters.size(); i++)
129 {
130 final ParameterMappingReadHandler handler =
131 (ParameterMappingReadHandler) importParameters.get(i);
132 report.addInputParameter(handler.getName(), handler.getAlias());
133 }
134 for (int i = 0; i < exportParameters.size(); i++)
135 {
136 final ParameterMappingReadHandler handler =
137 (ParameterMappingReadHandler) exportParameters.get(i);
138 report.addExportParameter(handler.getAlias(), handler.getName());
139 }
140 if (queryReadHandler == null)
141 {
142 throw new ParseException("Query is not specified.", getLocator());
143 }
144 final String result = queryReadHandler.getResult();
145 report.setQuery(result);
146 }
147
148 protected Element getElement()
149 {
150 return subReport;
151 }
152 }