how to set header?

[Ana-Maria Oleski <an...@x-mail.net>]

Hi,

I've noticed there is an abstract getHeader() method in the Layout class, which is used
for example in HTMLLayout to set the html header.

What I would need is to set the header for a logfile in the log4j configuration file.
I'm writing performance data in a CSV format and I'd like to write the column names at
the beginning of the file.
 
I had originally hoped that I can set a "header" property for the ConversionPattern
layout, something like 

log4j.appender.statistics.layout.ConversionPattern= %d{yyyy-MM-dd};%d{HH:mm:ss}; %m%n
log4j.appender.statistics.layout.header=Day;Hour;Action;Millis

but that doesn't work. 

Should I write an own layout class (and if yes how do I get the value of the header
property from the configuration file into my HeaderLayout instance?). Or is there an
easier way?

Thanx,
Ana 

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