3.2.6 maven dependency question

[armita]

I tried to use jboss's maven repository. I noticed that jbpm 3.2.6 artifact includes a lot of dependencies that does not make sense to me. I wanted to ask what is the reason of including these dependencies in the POM file for jbpm-jpdl-3.2.6.SP1:

-lucence
-jackrabbit
-derby
-icu4j

Could someone please clarify it ?

[kukeltje]

lucene/jackrabbit were/are for JCR (JSR-168) compliant storage options. Not used by a lot of people.

The other 2 I do not no by heart (and no time to find out for you now)

[armita]

"kukeltje" wrote:
lucene/jackrabbit were/are for JCR (JSR-168) compliant storage options. Not used by a lot of people.

The other 2 I do not no by heart (and no time to find out for you now)

Thanks very much Ronald for your kind answer.
I don't see why optional dependencies that aren't used by a lot of people should be defaulted in pom file.