Bug 214204 Only document content in document folder should be removed.[0601]
Description: Only document related content in document folder should be removed. Build number:2.3.0.v20080103 Steps to reproduce: 1. Deploy BIRT. 2. Edit web.xml to set BIRT_VIEWER_DOCUMENT_FOLDER to your local path and there are content inside the path. 3. Start server and click View Example to preview sample report. Expected result: Only content created by viewer should be removed in specified document folder. Actual result: All contents are deleted despite whether they are related with BIRT. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
{
			documentFile = documentFile + SUFFIX_REPORT_DOCUMENT;
		}
		return documentFile;
	}
	/**
	 * Get named parameter from http request. parameter names and values are all
	 * in iso-8859-1 format in request.
	 * 
	 * @param request
	 *            incoming http request
	 * @param parameterName
	 *            parameter name in UTF-8 format
	 * @return
	 */
	public static String getParameter( HttpServletRequest request,
			String parameterName )
	{
		return getParameter( request, parameterName, true );
	}
	/**
	 * Get named parameter from http request. parameter names and values are all
	 * in iso-8859-1 format in request.
	 * 
	 * @param request
	 *            incoming http request
	 * @param parameterName
	 *            parameter name
	 * @param isUTF
	 *            is parameter in UTF-8 formator not