Forget it, it's easy to have
log4j.rootCategory=INFO, ${log4j.appenders}
with my configuration class providing a default value for this.
Fergus
On Fri, Sep 06, 2002 at 10:20:31AM +0100, Fergus Gallagher wrote:
> Thanks for that.
>
> I'll explain what I actually want to do - maybe someone can suggest a better
> way of doing it (my intended way was a bit of a hack anyway)
>
> I have lots of apps all using the same classpath, and I would *prefer* to
> use a single log4j config file, rather than one per app, to make management
> a bit easier.
>
> What I wanted to do was
>
> java -Dlog4j.appenders="A1,A3" ....
>
> and have only those configured. It would be relatively easy to add all the
> appenders to root, then remove those NOT in this list, but it would be nice
> to have the configuration fall back to something sensible if the system
> property isn't defined.
>
> Fergus
>
> P.S. as a related point, is the Enumeration from
> category.getAllAppenders() guaranteed to return them in the same order as
> they're defined?
>
>
> On Fri, Sep 06, 2002 at 10:51:16AM +0200, Ceki G?lc? wrote:
> >
> >
> > Appenders are instantiated only if they are attached to a logger. The
> > fact that they are mentioned in the config file has no effect.
> >
> > As to the programmatic listing of these appenders, suffice it to say
> > that one can't list things that do not exist.
> >
> >
> >
> > At 09:36 06.09.2002 +0100, you wrote:
> > >I have a config file like:
> > >
> > >log4j.rootCategory=INFO, A1
> > >
> > >log4j.appender.A1=.....
> > >log4j.appender.A2=.....
> > >log4j.appender.A3=.....
> > >
> > >
> > >i.e., I have multiple Appenders not attached to the root category. How can
> > >I (programmatically) get a list of all these appenders? I can only see how
> > >to get at those already attached to the root via
> > >Category.getRoot().getAllAppenders()
> > >
> > >Fergus
> > >
>
> --
> Fergus Gallagher Tel: +44 (20) 8742 1600
> Orbis Fax: +44 (20) 8742 2649
> 414 Chiswick High Street email: [EMAIL PROTECTED]
> London W4 5TL Web: http://www.orbisuk.com
>
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Fergus Gallagher Tel: +44 (20) 8742 1600
Orbis Fax: +44 (20) 8742 2649
414 Chiswick High Street email: [EMAIL PROTECTED]
London W4 5TL Web: http://www.orbisuk.com
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