this.servletContext = servletContext;
Report report = ReportDAO.load(siteId, reportId);
EngineConfig config = new EngineConfig();
config.setEngineHome("");
IPlatformContext context = new PlatformServletContext(servletContext);
config.setPlatformContext(context);
Platform.startup(config);
IReportEngineFactory factory = (IReportEngineFactory) Platform
.createFactoryObject( IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY );