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: SQLDataFactoryReadHandler.java,v 1.2 2007/04/01 18:49:26 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.data.sql;
032
033 import java.util.ArrayList;
034
035 import org.jfree.report.ReportDataFactory;
036 import org.jfree.report.modules.data.sql.ConnectionProvider;
037 import org.jfree.report.modules.data.sql.SQLReportDataFactory;
038 import org.jfree.report.modules.factories.data.base.DataFactoryReadHandler;
039 import org.jfree.xmlns.parser.AbstractXmlReadHandler;
040 import org.jfree.xmlns.parser.PropertyReadHandler;
041 import org.jfree.xmlns.parser.XmlReadHandler;
042 import org.jfree.xmlns.parser.ParseException;
043 import org.xml.sax.Attributes;
044 import org.xml.sax.SAXException;
045
046 /**
047 * Creation-Date: 07.04.2006, 17:47:53
048 *
049 * @author Thomas Morgner
050 */
051 public class SQLDataFactoryReadHandler extends AbstractXmlReadHandler
052 implements DataFactoryReadHandler
053 {
054 private ConnectionReadHandler connectionProviderReadHandler;
055 private ArrayList queries;
056 private ConfigReadHandler configReadHandler;
057 private ReportDataFactory dataFactory;
058
059 public SQLDataFactoryReadHandler()
060 {
061 queries = new ArrayList();
062 }
063
064 /**
065 * Returns the handler for a child element.
066 *
067 * @param tagName the tag name.
068 * @param atts the attributes.
069 * @return the handler or null, if the tagname is invalid.
070 * @throws SAXException if there is a parsing error.
071 */
072 protected XmlReadHandler getHandlerForChild(final String uri,
073 final String tagName,
074 final Attributes atts)
075 throws SAXException
076 {
077
078 final ConnectionReadHandlerFactory factory = ConnectionReadHandlerFactory.getInstance();
079 final ConnectionReadHandler handler = (ConnectionReadHandler) factory.getHandler(uri, tagName);
080 if (handler != null)
081 {
082 connectionProviderReadHandler = handler;
083 return connectionProviderReadHandler;
084 }
085
086 if (isSameNamespace(uri) == false)
087 {
088 return null;
089 }
090 if (tagName.equals("config"))
091 {
092 configReadHandler = new ConfigReadHandler();
093 return configReadHandler;
094 }
095 if (tagName.equals("query"))
096 {
097 XmlReadHandler queryReadHandler = new PropertyReadHandler();
098 queries.add(queryReadHandler);
099 return queryReadHandler;
100 }
101 return null;
102 }
103
104 /**
105 * Done parsing.
106 *
107 * @throws SAXException if there is a parsing error.
108 */
109 protected void doneParsing() throws SAXException
110 {
111 ConnectionProvider provider = null;
112 if (connectionProviderReadHandler != null)
113 {
114 provider = connectionProviderReadHandler.getProvider();
115 }
116 if (provider == null)
117 {
118 provider = (ConnectionProvider)
119 getRootHandler().getHelperObject("connection-provider");
120 }
121 if (provider == null)
122 {
123 throw new ParseException
124 ("Unable to create SQL Factory: No connection provider.", getLocator());
125 }
126
127 SQLReportDataFactory srdf = new SQLReportDataFactory(provider);
128 if (configReadHandler != null)
129 {
130 final Boolean labelMapping = configReadHandler.isLabelMapping();
131 if (labelMapping != null)
132 {
133 srdf.setLabelMapping(labelMapping.booleanValue());
134 }
135 }
136 for (int i = 0; i < queries.size(); i++)
137 {
138 final PropertyReadHandler handler = (PropertyReadHandler) queries.get(i);
139 srdf.setQuery(handler.getName(), handler.getResult());
140 }
141 dataFactory = srdf;
142 }
143
144 /**
145 * Returns the object for this element or null, if this element does not
146 * create an object.
147 *
148 * @return the object.
149 * @throws SAXException if there is a parsing error.
150 */
151 public Object getObject() throws SAXException
152 {
153 return dataFactory;
154 }
155
156 public ReportDataFactory getDataFactory()
157 {
158 return dataFactory;
159 }
160 }