Bug 200812 Issue when remove one separator setting in viewer.property[0002]
Description: Issue when remove one separator setting in viewer.property Build number:2.2.1.v200708220927 Steps to reproduce: 1. Deploy birt. 2. Open viewer.properties under WEB-INF folder. 3. Delete "viewer.sep.0=," line 4. Start server. 5. Preview report. 6. Export Data, select columns and select "Comma(,)", click OK. Expected result: Comma(,) isn't in the separator list. Actual result: Nothing happened after step6 and no error logs. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
String filePath, boolean isCreated )
	{
		if ( filePath == null )
			filePath = DataUtil.trimString( getParameter( request,
					PARAM_REPORT_DOCUMENT ) );
		
		if ( filePath.length( ) <= 0 && !isCreated )
			return null;
		if ( filePath.length( ) <= 0 )
		{
			filePath = generateDocumentFromReport( request );
			filePath = createDocumentPath( filePath, request );
		}
		else
		{
			filePath = getRealPathOnWorkingFolder( filePath, request );
		}
		return filePath;
	}
	/**
	 * Returns the real path based on working folder. If file path is an
	 * absolute path, return it directly. Else, return the absolute path based
	 * on working folder.
	 * 
	 * @param filePath
	 * @param request
	 * @return
	 */
	public static String getRealPathOnWorkingFolder( String filePath,
			HttpServletRequest request )