private void log ( Writer writer ) throws IOException { if ( writer == null ) { log . write ( "null" ) ; } else if ( writer instanceof LoggingWriter ) { LoggingWriter loggingWriter = ( LoggingWriter ) writer ; log . write ( "writer[" ) ; log . write ( Long . toString ( loggingWriter . getId ( ) ) ) ; log . write ( ' ' ) ; } else if ( writer instanceof EncoderWriter ) { EncoderWriter encoderWriter = ( EncoderWriter ) writer ; log . write ( "new EncoderWriter(" ) ; log ( encoderWriter . getEncoder ( ) ) ; log . write ( ", " ) ; log ( encoderWriter . getOut ( ) ) ; log . write ( ' ' ) ; } else { String classname = writer . getClass ( ) . getName ( ) ; if ( classname . equals ( "org.apache.jasper.runtime.BodyContentImpl" ) ) log . write ( "bodyContent" ) ; else if ( classname . equals ( "org.apache.jasper.runtime.JspWriterImpl" ) ) log . write ( "jspWriter" ) ; else log . write ( classname ) ; } }
Provides detailed logging for a writer .