Bug 180118 Enhance to print out source stack trace in preview mode.[0002]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/BirtUtility.java
InputStream is = null;
			URL url = null;
			try
			{
				designFile = ParameterAccessor.workingFolder
						+ "/" 
						+ ParameterAccessor.getParameter( request,
								ParameterAccessor.PARAM_REPORT );
				if ( !designFile.startsWith( "/" ) ) 
					designFile = "/" + designFile; 
				url = request.getSession( ).getServletContext( ).getResource(
						designFile );
				if ( url != null )
					is = url.openStream( );
				if ( is != null )
					reportRunnable = ReportEngineService.getInstance( )
							.openReportDesign( url.toString( ), is, options );
			}
			catch ( Exception e )
			{
			}
		}
		return reportRunnable;
	}
	/**
	 * Returns report title from design
	 * 
	 * @param reportDesignHandle
	 * @return
	 * @throws ReportServiceException