/*
* 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) 2009 Pentaho Corporation. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.extensions.legacy.charts;
import org.pentaho.plugin.jfreereport.reportcharts.ChartExpression;
import org.pentaho.plugin.jfreereport.reportcharts.MultiPlotChartExpression;
import org.pentaho.reporting.engine.classic.core.AbstractReportDefinition;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.ReportElement;
import org.pentaho.reporting.engine.classic.core.ReportPreProcessor;
import org.pentaho.reporting.engine.classic.core.ReportProcessingException;
import org.pentaho.reporting.engine.classic.core.Section;
import org.pentaho.reporting.engine.classic.core.SubReport;
import org.pentaho.reporting.engine.classic.core.function.Expression;
import org.pentaho.reporting.engine.classic.core.states.datarow.DefaultFlowController;
import org.pentaho.reporting.engine.classic.core.wizard.AutoGeneratorUtility;
import org.pentaho.reporting.engine.classic.core.wizard.DataSchema;
/**
* Todo: Document me!
* <p/>
* Date: 15.06.2009
* Time: 15:42:45
*
* @author Thomas Morgner.
*/
public class LegacyChartPreProcessor implements ReportPreProcessor
{
public LegacyChartPreProcessor()
{
}
public Object clone() throws CloneNotSupportedException
{
return super.clone();
}
public MasterReport performPreProcessing(final MasterReport definition,
final DefaultFlowController flowController) throws ReportProcessingException
{
processSection(definition, flowController.getDataSchema(), definition);
return definition;
}
public SubReport performPreProcessing(final SubReport definition,
final DefaultFlowController flowController) throws ReportProcessingException
{
processSection(definition, flowController.getDataSchema(), definition);
return definition;
}
private void processSection(final Section section,
final DataSchema dataSchema,
final AbstractReportDefinition reportDefinition) throws ReportProcessingException
{
final int count = section.getElementCount();
for (int i = 0; i < count; i++)
{
final ReportElement element = section.getElement(i);
if (element instanceof SubReport)
{
continue;
}
if (element instanceof Section)
{
processSection((Section) element, dataSchema, reportDefinition);
continue;
}
final Object attribute =
element.getAttribute(AttributeNames.Core.NAMESPACE, AttributeNames.Core.ELEMENT_TYPE);
if (attribute instanceof LegacyChartType == false)
{
continue;
}
final Object maybeChartExpression =
element.getAttributeExpression(AttributeNames.Core.NAMESPACE, AttributeNames.Core.VALUE);
if (maybeChartExpression instanceof ChartExpression == false)
{
continue;
}
final ChartExpression chartExpression = (ChartExpression) maybeChartExpression;
final Object primaryChartExpression = element.getAttribute
(LegacyChartElementModule.NAMESPACE, LegacyChartElementModule.PRIMARY_DATA_COLLECTOR_FUNCTION_ATTRIBUTE);
if (primaryChartExpression instanceof Expression)
{
final Expression datasetExpression = (Expression) primaryChartExpression;
final Expression datasetExpressionInstance = datasetExpression.getInstance();
final String name = AutoGeneratorUtility.generateUniqueExpressionName
(dataSchema, "::legacy-charts::primary-dataset::{0}", reportDefinition);
datasetExpressionInstance.setName(name);
chartExpression.setDataSource(name);
reportDefinition.addExpression(datasetExpressionInstance);
}
if (chartExpression instanceof MultiPlotChartExpression == false)
{
continue;
}
final MultiPlotChartExpression multiPlotChartExpression = (MultiPlotChartExpression) chartExpression;
final Object secondaryDataSourceExpression = element.getAttribute
(LegacyChartElementModule.NAMESPACE, LegacyChartElementModule.SECONDARY_DATA_COLLECTOR_FUNCTION_ATTRIBUTE);
if (secondaryDataSourceExpression instanceof Expression)
{
final Expression datasetExpression = (Expression) secondaryDataSourceExpression;
final Expression datasetExpressionInstance = datasetExpression.getInstance();
final String name = AutoGeneratorUtility.generateUniqueExpressionName
(dataSchema, "::legacy-charts::secondary-dataset::{0}", reportDefinition);
datasetExpressionInstance.setName(name);
multiPlotChartExpression.setSecondaryDataSet(name);
reportDefinition.addExpression(datasetExpressionInstance);
}
}
}
}