Bug 140974 bad assert in ScalarParameterFragment
The following assert appears around line 98 in org.eclipse.birt.report.viewer.aggregation.parameter.ScalarParameterFragment assert paramDefaultValueObj instanceof String; If the report does not have a default value for the parameter in the report, then this assert fails even though the code that follows it explicitly handles a null value. Since null is a valid value, the assert should be assert (paramDefaultValueObj == null) || (paramDefaultValueObj instanceof String);
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
*/
	public static Set getParameterValues( HttpServletRequest request,
			String parameterName )
	{
		return getParameterValues( request, parameterName, true );
	}
	/**
	 * Get report file name.
	 * 
	 * @param request
	 *            http request
	 * @return report file name
	 */
	public static String getReport( HttpServletRequest request )
	{
		String filePath = getParameter( request, PARAM_REPORT );
		filePath = preProcess( filePath );
		filePath = createAbsolutePath( filePath );
		return filePath;
	}
	/**
	 * Get report document name.
	 * 
	 * @param request
	 *            http request
	 * @return report file name
	 * @throws AxisFault
	 */
	public static String getReportDocument( HttpServletRequest request )
	{