Source for org.jfree.report.flow.flowing.FlowReportProcessor

   1: /**
   2:  * ========================================
   3:  * JFreeReport : a free Java report library
   4:  * ========================================
   5:  *
   6:  * Project Info:  http://reporting.pentaho.org/
   7:  *
   8:  * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
   9:  *
  10:  * This library is free software; you can redistribute it and/or modify it under the terms
  11:  * of the GNU Lesser General Public License as published by the Free Software Foundation;
  12:  * either version 2.1 of the License, or (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  15:  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16:  * See the GNU Lesser General Public License for more details.
  17:  *
  18:  * You should have received a copy of the GNU Lesser General Public License along with this
  19:  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20:  * Boston, MA 02111-1307, USA.
  21:  *
  22:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
  23:  * in the United States and other countries.]
  24:  *
  25:  * ------------
  26:  * $Id: FlowReportProcessor.java 2725 2007-04-01 18:49:29Z taqua $
  27:  * ------------
  28:  * (C) Copyright 2000-2005, by Object Refinery Limited.
  29:  * (C) Copyright 2005-2007, by Pentaho Corporation.
  30:  */
  31: package org.jfree.report.flow.flowing;
  32: 
  33: import org.jfree.layouting.ChainingLayoutProcess;
  34: import org.jfree.layouting.DefaultLayoutProcess;
  35: import org.jfree.layouting.LayoutProcess;
  36: import org.jfree.layouting.output.OutputProcessor;
  37: import org.jfree.report.DataSourceException;
  38: import org.jfree.report.ReportDataFactoryException;
  39: import org.jfree.report.ReportProcessingException;
  40: import org.jfree.report.flow.AbstractReportProcessor;
  41: import org.jfree.report.flow.LibLayoutReportTarget;
  42: import org.jfree.report.flow.ReportJob;
  43: import org.jfree.resourceloader.ResourceKey;
  44: import org.jfree.resourceloader.ResourceManager;
  45: 
  46: /**
  47:  * This is written to use LibLayout. It will never work with other report
  48:  * targets.
  49:  *
  50:  * @author Thomas Morgner
  51:  */
  52: public class FlowReportProcessor extends AbstractReportProcessor
  53: {
  54:   private OutputProcessor outputProcessor;
  55: 
  56:   public FlowReportProcessor()
  57:   {
  58:   }
  59: 
  60:   public OutputProcessor getOutputProcessor()
  61:   {
  62:     return outputProcessor;
  63:   }
  64: 
  65:   public void setOutputProcessor(final OutputProcessor outputProcessor)
  66:   {
  67:     this.outputProcessor = outputProcessor;
  68:   }
  69: 
  70:   protected LibLayoutReportTarget createTarget(final ReportJob job)
  71:   {
  72:     if (outputProcessor == null)
  73:     {
  74:       throw new IllegalStateException(
  75:               "OutputProcessor is invalid.");
  76:     }
  77:     final LayoutProcess layoutProcess =
  78:             new ChainingLayoutProcess(new DefaultLayoutProcess(outputProcessor));
  79:     final ResourceManager resourceManager = job.getReportStructureRoot().getResourceManager();
  80:     final ResourceKey resourceKey = job.getReportStructureRoot().getBaseResource();
  81: 
  82:     return new LibLayoutReportTarget
  83:             (job, resourceKey, resourceManager, layoutProcess);
  84:   }
  85: 
  86:   /**
  87:    * Bootstraps the local report processing. This way of executing the report
  88:    * must be supported by *all* report processor implementations. It should
  89:    * fully process the complete report.
  90:    *
  91:    * @param job
  92:    * @throws ReportDataFactoryException
  93:    */
  94:   public void processReport (final ReportJob job)
  95:           throws ReportDataFactoryException, DataSourceException,
  96:           ReportProcessingException
  97:   {
  98:     if (job == null)
  99:     {
 100:       throw new NullPointerException();
 101:     }
 102: 
 103:     synchronized (job)
 104:     {
 105:       // first, compute the globals
 106:       processReportRun(job, createTarget(job));
 107:       // second, paginate (this splits the stream into flows)
 108:       processReportRun(job, createTarget(job));
 109:       // third, generate the content.
 110:       processReportRun(job, createTarget(job));
 111:     }
 112:   }
 113: 
 114: }