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 context
	 * @return
	 */
	private static String getRealPath( String path, ServletContext context )
	{
		assert path != null;
		String realPath = null;
		try
		{
			if ( !path.startsWith( "/" ) ) 
				path = "/" + path; 
			realPath = context.getRealPath( path );
			if ( realPath == null )
			{
				
				String rootPath = System
						.getProperty( IBirtConstants.SYS_PROP_ROOT_PATH );
				if ( rootPath != null && !isRelativePath( rootPath ) )
				{
					path = path.substring( 1 );
					realPath = DataUtil.trimSepEnd( rootPath ) + File.separator
							+ path;
				}
				else
				{
					URL url = context.getResource( "/" ); 
					if ( url != null )
						realPath = DataUtil.trimString( url.getFile( ) ) + path;
				}
			}