BirtProvider


1   /*  
2    * Copyright (C) 2006 by Open Source Software Solutions, LLC and Contributors
3    *  
4    * This program is free software; you can redistribute it and/or modify it
5    * under the terms of the GNU General Public License as published by the Free
6    * Software Foundation; either version 2 of the License, or (at your option)
7    * any later version.
8    * 
9    * This program is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11   * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12   * more details.
13   * 
14   * You should have received a copy of the GNU General Public License along with
15   * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16   * Place - Suite 330, Boston, MA 02111-1307, USA.
17   *   
18   * Original Author  :   Roberto Nibali  - rnibali@pyx.ch 
19   * Contributor(s)   :   Erik Swenson    - erik@oreports.com
20   * 
21   */
22  
23  package org.efs.openreports.providers;
24  
25  import java.util.logging.Level  ;
26  
27  import org.apache.log4j.Logger;
28  import org.eclipse.birt.core.exception.BirtException;
29  import org.eclipse.birt.core.framework.IPlatformContext;
30  import org.eclipse.birt.core.framework.Platform;
31  import org.eclipse.birt.core.framework.PlatformConfig;
32  import org.eclipse.birt.core.framework.PlatformFileContext;
33  import org.eclipse.birt.report.engine.api.EngineConfig;
34  import org.eclipse.birt.report.engine.api.HTMLActionHandler;
35  import org.eclipse.birt.report.engine.api.HTMLEmitterConfig;
36  import org.eclipse.birt.report.engine.api.HTMLServerImageHandler;
37  import org.eclipse.birt.report.engine.api.IReportEngine;
38  import org.eclipse.birt.report.engine.api.IReportEngineFactory;
39  import org.springframework.beans.factory.DisposableBean;
40  
41  /**
42   * Provides the init and startup of the birt engine and config. 
43   * 
44   * @author Roberto Nibali
45   * 
46   */
47  public class BirtProvider implements DisposableBean
48  {
49      protected static Logger log = Logger.getLogger(BirtProvider.class);
50      
51      private static IReportEngine birtEngine = null; 
52  
53      public static synchronized IReportEngine getBirtEngine(String   birtHome)
54      {
55          if (birtEngine == null)
56          {           
57              log.info("Starting BIRT Engine and OSGI Platform");
58                          
59              PlatformConfig platformConfig = new PlatformConfig();
60              platformConfig.getBIRTHome(birtHome);
61              
62              IPlatformContext context = new PlatformFileContext(platformConfig);
63              
64              HTMLServerImageHandler imageHandler = new HTMLServerImageHandler();
65              
66              HTMLEmitterConfig emitterConfig = new HTMLEmitterConfig();
67              emitterConfig.setActionHandler(new HTMLActionHandler());        
68              emitterConfig.setImageHandler(imageHandler);
69  
70              EngineConfig config = new EngineConfig();
71              config.setEngineHome("");
72              config.setPlatformContext(context);                             
73              config.setLogConfig(null, Level.ALL);           
74              config.getEmitterConfigs().put("html", emitterConfig);
75  
76              try
77              {
78                  Platform.startup(config);
79              }
80              catch (BirtException e)
81              {
82                  log.error("BirtException", e);
83              }
84  
85              IReportEngineFactory factory = (IReportEngineFactory) Platform
86                      .createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);
87              
88              birtEngine = factory.createReportEngine(config);
89              
90              log.info("BIRT Engine Started");
91          }       
92                  
93          birtEngine.changeLogLevel(Level.SEVERE);
94          
95          return birtEngine;
96      }
97  
98      public void destroy()
99      {
100         if (birtEngine == null) return;             
101         
102         birtEngine.destroy();
103         birtEngine.shutdown();          
104         Platform.shutdown();
105         birtEngine = null;
106         
107         log.info("BIRT Engine and OSGI Platform Shutdown");
108     }
109 }
110
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