/*
* 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.states.process;
import org.pentaho.reporting.engine.classic.core.ReportProcessingException;
import org.pentaho.reporting.engine.classic.core.RootLevelBand;
import org.pentaho.reporting.engine.classic.core.event.ReportEvent;
/**
* Creation-Date: 03.07.2007, 13:57:49
*
* @author Thomas Morgner
*/
public class BeginDetailsHandler implements AdvanceHandler
{
public static final BeginDetailsHandler HANDLER = new BeginDetailsHandler();
private BeginDetailsHandler()
{
}
public int getEventCode()
{
return ReportEvent.ITEMS_STARTED;
}
public ProcessState advance(final ProcessState state) throws ReportProcessingException
{
final ProcessState next = state.deriveForAdvance();
// if there is no data in the report's data source, this now prints the No-Data-Band.
next.fireReportEvent();
if (next.getNumberOfRows() == 0)
{
return InlineSubreportProcessor.processInline(next, next.getReport().getNoDataBand());
}
return next;
}
public ProcessState commit(final ProcessState next) throws ReportProcessingException
{
next.setInItemGroup(true);
if (next.getNumberOfRows() > 0)
{
next.setAdvanceHandler(ProcessDetailsHandler.HANDLER);
return next;
}
next.setAdvanceHandler(EndDetailsHandler.HANDLER);
final RootLevelBand rootLevelBand = next.getReport().getNoDataBand();
return InlineSubreportProcessor.process(next, rootLevelBand);
}
public boolean isFinish()
{
return false;
}
public boolean isRestoreHandler()
{
return false;
}
}