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From "Vincent Massol" <>
Subject RE: artifact types/extensions
Date Wed, 16 Jun 2004 04:59:39 GMT
Hi Brett,

I agree that we need a way to relate different produced artifacts to a
project id. ATM this is not possible and causing problems for the ejb
plugin for example (which generates 2 artifacts: a main jar + a client

A "derivative" would work I guess. 

I'd much prefer that the version remains at the end of the artifact name

What is the "format"? Is it the extension?

It is currently not possible to introduce a new artifact type that
doesn't end with .<type> (like we need for ear, war, rar, etc) without
modifying Maven core code. Adding the optional <extension> (or <format>)
element would allow for this.


> -----Original Message-----
> From: Brett Porter []
> Sent: 16 June 2004 07:12
> To: Maven 2 Developers List
> Subject: artifact types/extensions
> Hi,
> I'm just checking how this sits in m2 land so the stuff I'm hacking
> m1's
> artifact is somewhat compatible.
> So, we have single projects generating multiple artifacts of different
> types
> (dists, jars, documentation, poms, etc). In m1, there is a mapping of
> to
> extension, so one type = one extension.
> I believe this is taken care of so that there can be multiple
> extensions for a single type (where the artifact is the same, but
> presented
> differently - eg tar.gz vs zip, etc) - is this correct?
> What about src dists vs bin dists? I originally thought of them as
> different
> types, but this isn't really the same thing. Also - you really want to
> name the
> files differently. This also applies to things like ejb where you have
> client JAR.
> What I was thinking was that there is also a "derivative" attribute of
> artifact, that goes between version and extension. What do people
> So the final specification of an identifier for an artifact would be:
> groupId
> artifactId
> version
> type
> derivative
> format
> Where derivative defaults to none and each type has one default
> although
> formats are not related to type explicitly. The filename would be:
> groupId/types/artifactId-version-derivative.format
> Where -derivative is optional and version may be replaced by a
> version.
> Thoughts?
> - Brett

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