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
paramName = urlEncode( paramName, ISO_8859_1_ENCODE );
				paramValue = urlEncode( paramValue, UTF_8_ENCODE );
				queryString += ( isFirst ? "" : PARAMETER_SEPARATOR ) + paramName + EQUALS_OPERATOR + paramValue; 
				isFirst = false;
			}
		}
		if ( nullParams != null && nullParams.size( ) > 0 )
		{
			Iterator i = nullParams.iterator( );
			while ( i.hasNext( ) )
			{
				String paramName = (String) i.next( );
				if ( paramName != null && !paramName.equalsIgnoreCase( name ) )
				{
					paramName = urlEncode( paramName, UTF_8_ENCODE );
					queryString += ( isFirst ? "" : PARAMETER_SEPARATOR ) + PARAM_ISNULL + EQUALS_OPERATOR + paramName;  
					isFirst = false;
				}
			}
		}
		if ( name != null && name.length( ) > 0 ) 
		{
			if ( getParameter( request, name ) == null )
			{
				String paramValue = value;
				paramValue = urlEncode( paramValue, UTF_8_ENCODE );
				queryString += ( isFirst ? "" : PARAMETER_SEPARATOR ) + name + EQUALS_OPERATOR + paramValue; 
				isFirst = false;
			}
		}