If I see a syntax like ${prefix:key} I could think of having a map of "map
providers".
The source of such a map could be a file, system properties, environment
variables, database, ldap, ...
Haven't looked at commons-configuration.
But maybe also have a look at Apache Deltaspike which supports configurtion
values via a "Datasource".
And Tamaya will also have one, I think ...
Jan
> -----Ursprüngliche Nachricht-----
> Von: Ralph Goers [mailto:[email protected]]
> Gesendet: Donnerstag, 14. Dezember 2017 16:41
> An: Commons Developers List
> Betreff: Re: [text] Adapt the Log4j 2 Interpolator to [text]
>
> Yes, the Interpolator was borrowed from Commons Configuration.
>
> Ralph
>
> > On Dec 14, 2017, at 5:20 AM, Jörg Schaible <joerg.schaible@bpm-
> inspire.com> wrote:
> >
> > Hi Gary,
> >
> > Am Wed, 13 Dec 2017 15:17:56 -0700 schrieb Gary Gregory:
> >
> >> Hi All,
> >>
> >> Log4j 2 provides it's own copy of our StrSubstitutor/StrLookup
> >> framework enhanced for Log4j's needs. In addition it provides a
> >> custom StrLookup called Interpolator which allows for lookups like:
> >>
> >> ${sys:java.version} and ${env:MY_VAR} to look up system properties
> >> and environment variables respectively as well as other sub maps.
> >
> > You will find this also in commons-configurations.
> >
> >> I would like to borrow this concept of a composite and keyed
> >> StrLookup and make it a first class citizen in [text].
> >>
> >> This would look like this:
> >>
> >> Interpolator interpolator = new o.a.c.t.Interpolator();
> >> interpolator.put("gary", StrLookup.mapLookup(new HashMap()));
> >> interpolator.put("alice", StrLookup.mapLookup(new HashMap()));
> >> StrSubstitutor strSubstitutor = new StrSubstitutor(interpolator);
> >>
> >> Thoughts?
> >
> > Cheers,
> > Jörg
> >
> >
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>
>
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