Bug 195613 drill through to toc in target report does not work properly[04]
steps to reproduce: use attached reports preview new_report_9.rptdesign in PDF click on actuate logo expected behavior: data item of 2nd page (toc) in target report is displayed actual behavior: target report was reached, but failed to navigated to the toc item
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/BirtUtility.java
/**
	 * Add current task in http session
	 * 
	 * @param request
	 * @param task
	 */
	public static void addTask( HttpServletRequest request, IEngineTask task )
	{
		if ( request == null || task == null )
			return;
		try
		{
			
			BaseAttributeBean attrBean = (BaseAttributeBean) request
					.getAttribute( IBirtConstants.ATTRIBUTE_BEAN );
			if ( attrBean == null )
				return;
			String taskid = attrBean.getTaskId( );
			if ( taskid == null )
				return;
			
			HttpSession session = request.getSession( true );
			Map map = (Map) session.getAttribute( IBirtConstants.TASK_MAP );
			if ( map == null )
			{
				map = new HashMap( );
				session.setAttribute( IBirtConstants.TASK_MAP, map );
			}
			
			synchronized ( map )