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Subject: RE: <clone> or file collections
Date: Tue, 11 Jan 2005 10:47:17 -0600
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Thread-Topic: <clone> or file collections
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From: "Dominique Devienne" <DDevienne@lgc.com>
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> From: Stefan Bodewig [mailto:bodewig@apache.org]
>=20
> I'm not really sure what the task is going to be used for, that's
> probably my biggest problem with it.  Why do we need it?

Yep. My thoughts exactly.

> The problem Bug 32631 talks about could better be solved by tasks that
> perform set operations.  Right now our best file collection is path
> and it would be rather easy to have
>=20
> <intersect targetid=3D"new-path">
>   <path refid=3D"path1"/>
>   <path refid=3D"path2"/>
> </intersect>
>=20
> as a task that creates a new path based on the intersection of two
> others.  Set unions are already possible for <path>.  Set minus should
> be as easy to implement as intersections.

That would be abusing Path IMHO. I know Peter has used Path as the
primary datatype for some of his excellent Ant-Contrib tasks, but
Path is supposed to be an *ordered* collection of arbitrary file and/or
directories, some possibly not existing.

This is quite different as a collection of arbitrary files.

> Maybe we really need to
> finally tackle a generic file collection approach that unifies
> fileset, path and filelist (possibly path is that already?) and have
> tasks that work on those collections.

Yes, I believe it's high time for this. --DD

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