Bug 180431 Exported files from Export Report have no extension name.[0002]
Description: Exported files from Export Report have no extension name. Build number:2.2.0.v20070402 Steps to reproduce: 1. New a report. 2. Preview in Web Viewer. 3. Click Export Report. 4. Select any kind of format and click OK. 5. Save the report intead of open it. 6. Check the saved file. Expected result: If I choose PDF, the file name should be like "new_report_1.pdf" Actual result: The file name is new_report without extension name. Error log:N/A
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
: null;
	}
	/**
	 * Get query string with new parameter value.
	 * 
	 * @param request
	 *            http request
	 * @param name
	 *            parameter name
	 * @param value
	 *            default parameter value
	 * @return new query string with new parameter value
	 */
	public static String getEncodedQueryString( HttpServletRequest request,
			String name, String value )
	{
		String queryString = ""; 
		Enumeration e = request.getParameterNames( );
		Set nullParams = getParameterValues( request, PARAM_ISNULL );
		boolean isFirst = true;
		while ( e.hasMoreElements( ) )
		{
			String paramName = (String) e.nextElement( );
			if ( paramName != null
					&& !paramName.equalsIgnoreCase( PARAM_ISNULL ) )
			{
				String paramValue = getParameter( request, paramName, false );
				if ( nullParams != null
						&& nullParams.remove( toUTFString( paramName ) )
						&& !paramName.equalsIgnoreCase( name ) )