On Sat, 15 Sep 2001 01:22, COFFMAN Steven wrote:
> Hi,
> Over at FOP, several (4) users have recently raised concerns with
> FOP's adoption of Avalon and LogKit. The most valid complaint is by those
> who had embedded FOP into applications that use Log4J and now have two
> different logs.
In these cases it is probably best to create adapters between the two APIs
(ie have an appender that delivers to LogKit system or a LogTarget that
delivers to Log4j system). When I originally switched the majority of my apps
away from using Log4j (at about version Log4J 0.64) this is what I did and it
worked reasonably okay.
> I remember the proposal to make a single Avalon interface
> that either Log4J or LogKit could be plugged into interchangeably, but now
> that Avalon 4.0 final is out, I wanted to raise the issue again.
You should have raised the issue earlier ;) The problem in changing Loggable
interface now would break backwards compatability with the framework. I don't
really like the idea of doing this to a supposedly stable API - especially
such an essential part of framework. It would have been better to have made
this change during alpha or at worst beta phases but not now because it will
break too much stuff.
Then again I know it will also help in introducing the framework into some
existing systems. So I guess it is not so bad. Maybe if we release next
version of Framework, LogKit and re-release Excalibur (so they all work with
released jars) then I wouldn't -1 it ... ;)
> Also,
> there's an alternative approach to the proposal that might have some good
> ideas:
> http://www.openinstitute.org/trunk/
Thats similar to what I proposed ages ago to Ceki and it is also similar to
the proposal in jakarta commons. The problem is that adopting such an
interface doesn't really gain you anything. It just creates a 6th API that
you have to learn.
In time it will become largely unnecessary - as jdk1.4 becomes "standard"
install most people will move to that toolkit and it will become THE standard
and all the other logging APIs will go away much like JGL (a great
collections library pre-jdk1.2).
--
Cheers,
Pete
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