[slf4j-dev] jcl-over-slf4j module not building

Ceki Gülcü listid at qos.ch
Tue Feb 20 21:36:12 CET 2007


John,

Do you have a suggestion how we could avoid duplication of slf4j-api 
classes in the various bindings? Can this be done using maven-bundle-plugin ?

At 07:52 PM 2/19/2007, Ceki Gülcü wrote:

>At 08:25 PM 2/18/2007, John E. Conlon wrote:
>
> > > Assuming Maven 2 is used by all participants, without particular
> > > action by Sally, slf4j-api would be packaged in the final
> > > application along with a user-chosen binding, say slf4j-log4j12. In
> > > that case, we would have the contents of slf4j-api project duplicated,
> > > once in slf4j-api.jar and once in slf4j-log4j12.jar. It would most
> > > probably work as expected, but I don't think it's good practice to
> > > have class files duplicated.
> > >
> >I don't like this class duplication either, but AFAIK given the same
> >classloader this should not matter.  The same classloader will load
> >which ever it encounters first.  (Maybe I will eat these words latter?) ;-)
>
>Hi John,
>
>The driving premise behind SLF4J is to reduce surprises. I think we
>should do things by the book and avoid duplication. Since SLF4J
>version 1.1, user's have been asked to have two jars, slfl4-api.jar in
>addition to a binding. In SLF4J 1.3, the general arrangement remains
>the same, except that slf4j-api is now self-sufficient as a
>compile-time dependency.
>
>I quite like this user-story. Alice and Bob expose slf4j-api as a
>transitive dependency, while Sally, the end-user, chooses to depend on
>a binding of her own selection.  We respond to Eric Crahen's initial
>request [1] without fundamentally changing how SLF4J works.
>
>I do not wish to hide behind backward-compatibility excuses. We
>finally have a nice and clear separation between slf4j-api and
>slf4j-binding. Let's keep it clean and simple even if it costs an
>extra jar on the class path.
>
>[1]
>http://www.qos.ch/pipermail/logback-user/2007-February/000129.html
>
>
>
> >a good weekend for you too,
> >John
>
>--
>Ceki Gülcü
>Logback: The reliable, generic, fast and flexible logging framework for Java.
>http://logback.qos.ch
>
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-- 
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
http://logback.qos.ch




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