Bug 136770 Cannot view report document from web viewer
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* folder. So if a report file path is relative path, it's absolute path is
	 * synthesized by appending file path to the working folder path.
	 * 
	 * @param file
	 * @return
	 */
	private static String createAbsolutePath( String filePath )
	{
		if ( isWorkingFolderAccessOnly || isRelativePath( filePath ) )
		{
			return workingFolder + File.separator + filePath;
		}
		return filePath;
	}
	/**
	 * Generate document name according to report name.
	 * 
	 * @param request
	 * @return document name.
	 */
	private static String generateDocumentFromReport( HttpServletRequest request )
	{
		String fileName = getReport( request );
		if ( fileName.indexOf( '.' ) >= 0 )
		{
			fileName = fileName.substring( 0, fileName.lastIndexOf( '.' ) )
					+ SUFFIX_REPORT_DOCUMENT;
		}
		else
		{