/*
* 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.compounddata;
import java.io.IOException;
import org.pentaho.reporting.engine.classic.core.CompoundDataFactory;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.ReportDataFactoryException;
import org.pentaho.reporting.engine.classic.core.modules.parser.data.compounddata.CompoundDataFactoryModule;
import org.pentaho.reporting.engine.classic.core.modules.parser.data.sql.SQLDataFactoryModule;
import org.pentaho.reporting.engine.classic.core.modules.parser.extwriter.DataFactoryWriteHandler;
import org.pentaho.reporting.engine.classic.core.modules.parser.extwriter.DataFactoryWriter;
import org.pentaho.reporting.engine.classic.core.modules.parser.extwriter.ReportWriterContext;
import org.pentaho.reporting.engine.classic.core.modules.parser.extwriter.ReportWriterException;
import org.pentaho.reporting.libraries.xmlns.common.AttributeList;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriter;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriterSupport;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class CompoundDataFactoryWriteHandler implements DataFactoryWriteHandler
{
public CompoundDataFactoryWriteHandler()
{
}
/**
* Writes a data-source into a XML-stream.
*
* @param reportWriter the writer context that holds all factories.
* @param xmlWriter the XML writer that will receive the generated XML data.
* @param dataFactory the data factory that should be written.
* @throws IOException if any error occured
* @throws ReportWriterException if the data factory cannot be written.
*/
public void write(final ReportWriterContext reportWriter,
final XmlWriter xmlWriter,
final DataFactory dataFactory)
throws IOException, ReportWriterException
{
if (reportWriter == null)
{
throw new NullPointerException();
}
if (dataFactory == null)
{
throw new NullPointerException();
}
if (xmlWriter == null)
{
throw new NullPointerException();
}
final CompoundDataFactory compoundDataFactory = (CompoundDataFactory) dataFactory;
final AttributeList rootAttrs = new AttributeList();
if (xmlWriter.isNamespaceDefined(CompoundDataFactoryModule.NAMESPACE) == false)
{
rootAttrs.addNamespaceDeclaration("data", CompoundDataFactoryModule.NAMESPACE);
}
xmlWriter.writeTag(SQLDataFactoryModule.NAMESPACE, "sql-datasource", rootAttrs, XmlWriterSupport.OPEN);
xmlWriter.writeTag(CompoundDataFactoryModule.NAMESPACE, "compound-datasource", rootAttrs, XmlWriterSupport.OPEN);
for (int i = 0; i < compoundDataFactory.size(); i++)
{
final DataFactory df = compoundDataFactory.get(i);
final DataFactoryWriteHandler writerHandler = DataFactoryWriter.lookupWriteHandler(df);
if (writerHandler == null)
{
throw new ReportWriterException("Unable to find writer-handler for data-factory " + df.getClass());
}
writerHandler.write(reportWriter, xmlWriter, dataFactory);
}
xmlWriter.writeCloseTag();
}
}