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
Object paramValueObj = DataUtil.validate( dataType, pattern,
					paramValue, bean.getLocale( ), isLocale );
			
			parameterMap.put( paramName, paramValueObj );
		}
	}
	/**
	 * Returns report runnable from design file
	 * 
	 * @param request
	 * @param path
	 * @return
	 * @throws EngineException
	 * 
	 */
	public static IReportRunnable getRunnableFromDesignFile(
			HttpServletRequest request, String designFile, Map options )
			throws EngineException
	{
		IReportRunnable reportRunnable = null;
		
		File file = new File( designFile );
		if ( file.exists( ) )
		{
			reportRunnable = ReportEngineService.getInstance( )
					.openReportDesign( designFile, options );
		}
		else
		{