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From Peter Bright <Peter.Bri...@orbian.com>
Subject behaviour of the maven plugin
Date Thu, 01 Apr 2004 16:35:45 GMT
Hello,

Is it really a Good Thing that the maven plugin causes the use of ear-plugin
1.3 and ejb-plugin 1.2?  maven rc2 ships with newer versions of both (1.4
and 1.3, respectively).  Because ear 1.4 has breaking changes, this seems
less than ideal to me.  A project.xml that works with 1.4 doesn't work with
1.3 (and vice versa -- 1.4 needs ear.module which 1.3 doesn't recognize, and
1.3 needs ear.bundle which 1.4 does something stupid with).

The upshot of this is that if one installs the plugin, maven (upon unpacking
the plugin to the ~/.maven/plugins) grabs these old versions, and breaks the
project on all subsequent builds.

This to me seems like quite undesirable behaviour.  I appreciate that the
cactus plugin calls one of the ear goals (<attainGoal name="ear:load"/>) and
so needs that goal available and working, but that doesn't seem to me to be
a good enough reason to break things.  I appreciate also that it's not
really the cactus plugin's fault that the ear plugin has changed in this
incompatible way.  I accept that omitting this dependency is quite contrary
to maven's generally desirable handling of versioned dependencies.  But I
feel that nonetheless the change should be made.  Particularly problematic
is that the result is that /any/ project gets broken, because of the
pollution of the plugin directory.

I notice that as of http://nagoya.apache.org/bugzilla/show_bug.cgi?id=27351
the cactus plugin now makes use of the new 1.4 property, but it appears
(judging by
http://cvs.apache.org/viewcvs.cgi/*checkout*/jakarta-cactus/integration/mave
n/project.xml?content-type=text%2Fplain) that it still has as a dependency
the older ear plugin, so the fix doesn't seem to be a particularly good one
-- installing a new cactus plugin will still result in plugin pollution.

Regards,

Peter


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