Bug 199714 NPE with invalid url[0002]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
* @param options
	 *            InputOptions
	 * 
	 * @return Map
	 */
	protected Map getParsedParametersAsString( Collection parameterList,
			HttpServletRequest request, InputOptions options )
			throws ReportServiceException
	{
		Map params = new HashMap( );
		if ( parameterList == null )
			return params;
		for ( Iterator iter = parameterList.iterator( ); iter.hasNext( ); )
		{
			ParameterDefinition parameter = (ParameterDefinition) iter.next( );
			if ( parameter == null )
				continue;
			
			String paramName = parameter.getName( );
			if ( paramName == null )
				continue;
			
			String paramValue = null;
			if ( ParameterAccessor.isReportParameterExist( request, paramName ) )
			{
				
				paramValue = ParameterAccessor.getReportParameter( request,
						paramName, null );
				params.put( paramName, paramValue );
			}