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From "Richard Eckart de Castilho (JIRA)" <...@uima.apache.org>
Subject [jira] [Commented] (UIMA-3381) Trim UIMA-AS dependencies
Date Fri, 25 Oct 2013 16:16:35 GMT

    [ https://issues.apache.org/jira/browse/UIMA-3381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13805422#comment-13805422

Richard Eckart de Castilho commented on UIMA-3381:

I'd just like to point out that in my experience, exclusions are not such a good idea. Consider
the following situation:

* Project X has a dependency on UIMA-AS
* UIMA-AS has an excluded transitive dependency on A
* Project X has a dependency on Y
* Project Y has a transitive dependency on Z
* Project Z has a transitive dependency on A

Maven uses the concept of "closest first". So since the exclusion of A is closed to X (X ->
UIMA AS -> !A) than the inclusion (X -> Y -> Z -> A), A not available to x, even
though it is required by Z.

Users of uimaFIT / DKPro Core  had issues with exclusions in uimaFIT when we started excluding
stuff in the POM. Hence,  we do not do exclusions in the POM anymore, but we do them only
in the binary assembly.

Note: I didn't build a test of this right now, this is how I made myself a rhyme to the issues
our users had when uimaFIT had been using exclusions.

> Trim UIMA-AS  dependencies
> --------------------------
>                 Key: UIMA-3381
>                 URL: https://issues.apache.org/jira/browse/UIMA-3381
>             Project: UIMA
>          Issue Type: Bug
>          Components: Async Scaleout
>            Reporter: Jerry Cwiklik
>            Assignee: Jerry Cwiklik
>             Fix For: 2.4.2AS
> The uimaj-as-activemq pom declares dependency on activemq-web which in turn has transitive
dependencies on many other parts including hadoop,google guiice, jackson and others. This
just bloats the classpath with unnecessary dependencies and forced downloads during maven
> Modify poms to exclude transitive dependencies.

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