Bug 135207 parameter dialog is not displayed when drill through to a PDF report that contains parameter with no default value
steps to reproduce: - create 1st report - add a report parameter (no default value) - create 2nd report - add a label "link" - edit hyperlink property (type: drill-through, target report format: PDF) - preview 1st report - click on "link" expected behavior: - parameter dialog should be displayed - target report is rendered in PDF format actual behavior: - "Some required parameter values are not set or set to incompatible data type." was displayed instead.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/servlet/ViewerServlet.java
InputOptions options = new InputOptions( );
		options.setOption( InputOptions.OPT_REQUEST, request );
		BirtReportServiceFactory.getReportService( ).setContext(
				getServletContext( ), options );
		return new BirtContext( request, response );
	}
	/**
	 * Local process http request with GET method.
	 * 
	 * @param request
	 *            incoming http request
	 * @param response
	 *            http response
	 * @exception ServletException
	 * @exception IOException
	 * @return
	 */
	protected void __doGet( IContext context ) throws ServletException,
			IOException, BirtException
	{
		IFragment activeFragment = null;
		String servletPath = context.getRequest( ).getServletPath( );
		if ( "/frameset".equalsIgnoreCase( servletPath ) ) 
		{
			activeFragment = viewer;
		}
		else if ( "/run".equalsIgnoreCase( servletPath ) ) 
		{
			activeFragment = engine;
		}