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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: StreamingReportProcessor.java 2775 2007-05-04 09:43:04Z 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.streaming; 32: 33: import org.jfree.layouting.DefaultLayoutProcess; 34: import org.jfree.layouting.LayoutProcess; 35: import org.jfree.layouting.output.OutputProcessor; 36: import org.jfree.report.DataSourceException; 37: import org.jfree.report.ReportDataFactoryException; 38: import org.jfree.report.ReportProcessingException; 39: import org.jfree.report.flow.AbstractReportProcessor; 40: import org.jfree.report.flow.LibLayoutReportTarget; 41: import org.jfree.report.flow.ReportJob; 42: import org.jfree.resourceloader.ResourceKey; 43: import org.jfree.resourceloader.ResourceManager; 44: 45: /** 46: * This is written to use LibLayout. It will never work with other report 47: * targets. 48: * 49: * @author Thomas Morgner 50: */ 51: public class StreamingReportProcessor extends AbstractReportProcessor 52: { 53: private OutputProcessor outputProcessor; 54: 55: public StreamingReportProcessor() 56: { 57: } 58: 59: public OutputProcessor getOutputProcessor() 60: { 61: return outputProcessor; 62: } 63: 64: public void setOutputProcessor(final OutputProcessor outputProcessor) 65: { 66: this.outputProcessor = outputProcessor; 67: } 68: 69: public void processReport(final ReportJob job) 70: throws ReportDataFactoryException, DataSourceException, ReportProcessingException 71: { 72: if (job == null) 73: { 74: throw new NullPointerException(); 75: } 76: 77: synchronized (job) 78: { 79: // first, compute the globals 80: processReportRun(job, createTarget(job)); 81: // second, paginate (this splits the stream into flows) 82: processReportRun(job, createTarget(job)); 83: // third, generate the content. 84: processReportRun(job, createTarget(job)); 85: } 86: } 87: 88: protected LibLayoutReportTarget createTarget(final ReportJob job) 89: throws ReportProcessingException 90: { 91: if (outputProcessor == null) 92: { 93: throw new IllegalStateException( 94: "OutputProcessor is invalid."); 95: } 96: final LayoutProcess layoutProcess = 97: new DefaultLayoutProcess(outputProcessor); 98: final ResourceManager resourceManager = job.getReportStructureRoot().getResourceManager(); 99: final ResourceKey resourceKey = job.getReportStructureRoot().getBaseResource(); 100: 101: return new LibLayoutReportTarget 102: (job, resourceKey, resourceManager, layoutProcess); 103: } 104: }