/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.parser.extwriter;
import java.io.IOException;
import org.pentaho.reporting.engine.classic.core.AbstractReportDefinition;
import org.pentaho.reporting.engine.classic.core.ClassicEngineBoot;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.modules.parser.ext.ExtParserModule;
import org.pentaho.reporting.libraries.base.config.Configuration;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.xmlns.common.AttributeList;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriter;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriterSupport;
/**
* Creation-Date: Jan 18, 2007, 6:39:15 PM
*
* @author Thomas Morgner
*/
public class DataFactoryWriter extends AbstractXMLDefinitionWriter
{
private static final String PREFIX =
"org.pentaho.reporting.engine.classic.core.modules.parser.extwriter.handler.datafactories.";
public DataFactoryWriter(final ReportWriterContext reportWriter, final XmlWriter xmlWriter)
{
super(reportWriter, xmlWriter);
}
/**
* Writes the report definition portion. Every DefinitionWriter handles one or more elements of the JFreeReport object
* tree, DefinitionWriter traverse the object tree and write the known objects or forward objects to other definition
* writers.
*
* @throws java.io.IOException if there is an I/O problem.
* @throws ReportWriterException if the report serialisation failed.
*/
public void write() throws IOException, ReportWriterException
{
final AbstractReportDefinition reportDef = getReport();
if (reportDef instanceof MasterReport == false)
{
// subreports have no data-factory at all.
return;
}
// first, try to find a suitable writer implementation.
final MasterReport report = (MasterReport) getReport();
final DataFactory dataFactory = report.getDataFactory();
final DataFactoryWriteHandler handler = DataFactoryWriter.lookupWriteHandler(dataFactory);
if (handler != null)
{
handler.write(getReportWriter(), getXmlWriter(), dataFactory);
return;
}
// then fall back to the default ..
DataFactoryWriter.writeDefaultDataFactory(dataFactory, getXmlWriter());
}
public static DataFactoryWriteHandler lookupWriteHandler(final DataFactory dataFactory)
{
final String configKey = PREFIX + dataFactory.getClass().getName();
final Configuration globalConfig = ClassicEngineBoot.getInstance().getGlobalConfig();
final String value = globalConfig.getConfigProperty(configKey);
if (value != null)
{
return (DataFactoryWriteHandler) ObjectUtilities.loadAndInstantiate
(value, DataFactoryWriter.class, DataFactoryWriteHandler.class);
}
return null;
}
public static void writeDefaultDataFactory(final DataFactory dataFactory,
final XmlWriter writer) throws IOException
{
String dataFactoryClass = null;
if (dataFactory != null)
{
if (hasPublicDefaultConstructor(dataFactory.getClass()))
{
dataFactoryClass = dataFactory.getClass().getName();
}
}
if (dataFactoryClass == null)
{
return;
}
final AttributeList attr = new AttributeList();
attr.setAttribute(ExtParserModule.NAMESPACE, "type", dataFactoryClass);
writer.writeTag(ExtParserModule.NAMESPACE, "data-factory", attr, XmlWriterSupport.CLOSE);
}
}