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: AbstractReportProcessor.java,v 1.10 2007/04/01 18:49:25 taqua Exp $
027 * ------------
028 * (C) Copyright 2000-2005, by Object Refinery Limited.
029 * (C) Copyright 2005-2007, by Pentaho Corporation.
030 */
031
032 package org.jfree.report.flow;
033
034 import org.jfree.formula.DefaultFormulaContext;
035 import org.jfree.report.DataSourceException;
036 import org.jfree.report.ReportDataFactoryException;
037 import org.jfree.report.ReportProcessingException;
038 import org.jfree.report.data.ReportContextImpl;
039 import org.jfree.report.flow.layoutprocessor.DefaultLayoutControllerFactory;
040 import org.jfree.report.flow.layoutprocessor.LayoutController;
041 import org.jfree.report.flow.layoutprocessor.LayoutControllerFactory;
042
043 /**
044 * Creation-Date: 10.11.2006, 16:07:26
045 *
046 * @author Thomas Morgner
047 */
048 public abstract class AbstractReportProcessor implements ReportProcessor
049 {
050 protected AbstractReportProcessor()
051 {
052 }
053
054 protected void processReportRun
055 (final ReportJob job,
056 final ReportTarget target)
057 throws ReportDataFactoryException,
058 DataSourceException, ReportProcessingException
059 {
060 synchronized (job)
061 {
062 final ReportContext context = createReportContext(job, target);
063 final LayoutControllerFactory layoutFactory =
064 context.getLayoutControllerFactory();
065 // we have the data and we have our position inside the report.
066 // lets generate something ...
067 final FlowController flowController = createFlowControler(context, job);
068
069 LayoutController layoutController =
070 layoutFactory.create(flowController, job.getReportStructureRoot(), null);
071
072 while (layoutController.isAdvanceable())
073 {
074 layoutController = layoutController.advance(target);
075 while (layoutController.isAdvanceable() == false &&
076 layoutController.getParent() != null)
077 {
078 final LayoutController parent = layoutController.getParent();
079 target.commit();
080 layoutController = parent.join(layoutController.getFlowController());
081 }
082 }
083 target.commit();
084 }
085 }
086
087 protected ReportContext createReportContext (final ReportJob job,
088 final ReportTarget target)
089 {
090 final ReportContextImpl context = new ReportContextImpl();
091 context.setExportDescriptor(target.getExportDescriptor());
092 final DefaultLayoutControllerFactory lcf = new DefaultLayoutControllerFactory();
093 lcf.initialize(job);
094 context.setLayoutControllerFactory(lcf);
095
096 final DefaultFormulaContext formulaContext = new DefaultFormulaContext();
097 context.setFormulaContext(formulaContext);
098 context.setResourceBundleFactory(job.getResourceBundleFactory());
099 context.setReportStructureRoot(job.getReportStructureRoot());
100 return context;
101 }
102
103 protected FlowController createFlowControler(final ReportContext context,
104 final ReportJob job)
105 throws DataSourceException
106 {
107 return new DefaultFlowController(context, job);
108 }
109
110 }