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
* @param request
	 * @param filePath
	 * @return report file
	 */
	public static String getReport( HttpServletRequest request, String filePath )
	{
		if ( filePath == null )
			filePath = DataUtil
					.trimString( getParameter( request, PARAM_REPORT ) );
		return getRealPathOnWorkingFolder( filePath, request );
	}
	/**
	 * Get report document name. If passed file path is null, get document file
	 * from request. If isCreated is true, try to create the document file when
	 * file path is null.
	 * 
	 * @param request
	 * @param filePath
	 * @param isCreated
	 * @return
	 */
	public static String getReportDocument( HttpServletRequest request,
			String filePath, boolean isCreated )
	{
		if ( filePath == null )
			filePath = DataUtil.trimString( getParameter( request,
					PARAM_REPORT_DOCUMENT ) );
		
		if ( filePath.length( ) <= 0 && !isCreated )
			return null;