Bug 137176 It takes unacceptable long time to render a report
Description: Get the attached report design, preview in report designer. It takes unacceptable long time to render a report, and users could not get the output finally. Even during the rending, the computer could not do anything else.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
/**
	 * Get report element's iid.
	 * 
	 * @param request
	 * @return report element's iid
	 */
	public static String getIId( HttpServletRequest request )
	{
		return getReportParameter( request, PARAM_IID, null );
	}
	/**
	 * Get report locale from Http request.
	 * 
	 * @param request
	 *            http request
	 * @return report locale
	 */
	public static Locale getLocale( HttpServletRequest request )
	{
		return getLocaleFromString( getParameter( request, PARAM_LOCALE ) );
	}
	/**
	 * Check whether the viewer is set rtl option.
	 * 
	 * @param request
	 * @return
	 */
	public static boolean isRtl( HttpServletRequest request )
	{
		boolean isRtl = false;