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: StreamingReportProcessor.java,v 1.11 2007/05/04 09:43:04 taqua Exp $
027 * ------------
028 * (C) Copyright 2000-2005, by Object Refinery Limited.
029 * (C) Copyright 2005-2007, by Pentaho Corporation.
030 */
031 package org.jfree.report.flow.streaming;
032
033 import org.jfree.layouting.DefaultLayoutProcess;
034 import org.jfree.layouting.LayoutProcess;
035 import org.jfree.layouting.output.OutputProcessor;
036 import org.jfree.report.DataSourceException;
037 import org.jfree.report.ReportDataFactoryException;
038 import org.jfree.report.ReportProcessingException;
039 import org.jfree.report.flow.AbstractReportProcessor;
040 import org.jfree.report.flow.LibLayoutReportTarget;
041 import org.jfree.report.flow.ReportJob;
042 import org.jfree.resourceloader.ResourceKey;
043 import org.jfree.resourceloader.ResourceManager;
044
045 /**
046 * This is written to use LibLayout. It will never work with other report
047 * targets.
048 *
049 * @author Thomas Morgner
050 */
051 public class StreamingReportProcessor extends AbstractReportProcessor
052 {
053 private OutputProcessor outputProcessor;
054
055 public StreamingReportProcessor()
056 {
057 }
058
059 public OutputProcessor getOutputProcessor()
060 {
061 return outputProcessor;
062 }
063
064 public void setOutputProcessor(final OutputProcessor outputProcessor)
065 {
066 this.outputProcessor = outputProcessor;
067 }
068
069 public void processReport(final ReportJob job)
070 throws ReportDataFactoryException, DataSourceException, ReportProcessingException
071 {
072 if (job == null)
073 {
074 throw new NullPointerException();
075 }
076
077 synchronized (job)
078 {
079 // first, compute the globals
080 processReportRun(job, createTarget(job));
081 // second, paginate (this splits the stream into flows)
082 processReportRun(job, createTarget(job));
083 // third, generate the content.
084 processReportRun(job, createTarget(job));
085 }
086 }
087
088 protected LibLayoutReportTarget createTarget(final ReportJob job)
089 throws ReportProcessingException
090 {
091 if (outputProcessor == null)
092 {
093 throw new IllegalStateException(
094 "OutputProcessor is invalid.");
095 }
096 final LayoutProcess layoutProcess =
097 new DefaultLayoutProcess(outputProcessor);
098 final ResourceManager resourceManager = job.getReportStructureRoot().getResourceManager();
099 final ResourceKey resourceKey = job.getReportStructureRoot().getBaseResource();
100
101 return new LibLayoutReportTarget
102 (job, resourceKey, resourceManager, layoutProcess);
103 }
104 }