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From "Erik Hatcher" <jakarta-...@ehatchersolutions.com>
Subject Re: testing for update on filter file
Date Mon, 01 Jul 2002 17:02:36 GMT
For what its worth, I agree completely with Dominique's remarks about
filtered <copy> (and in general, on the topic of dependency checking).

Ant is only as good as its smarts under the covers of these tasks.

So, DD, gonna send us a path for the copy task?  :))

    Erik


----- Original Message -----
From: "Dominique Devienne" <DDevienne@lgc.com>
To: "'Ant Users List'" <ant-user@jakarta.apache.org>
Sent: Monday, July 01, 2002 12:54 PM
Subject: RE: testing for update on filter file


> This works, but is more a work-around. The semantic of <copy> (its
'smarts')
> is broken if the files are not copied when the filter file has changed. It
> should be built-in to <copy> IMHO, and avoid doing the depends/if dance. I
> think this is my single real gripe about Ant, all these convolutions one
has
> to go thru to perform something conditionally when it's not built-in to
the
> task itself. --DD
>
> -----Original Message-----
> From: Jon Skeet [mailto:jon.skeet@peramon.com]
> Sent: Friday, June 28, 2002 9:24 AM
> To: Ant Users List
> Subject: RE: testing for update on filter file
>
> > I'm using the copy task in conjunction with an external
> > filter file.   I
> > understand that if copy task detects if one of the source
> > files is newer
> > than the target file, it will copy the source file to the
> > target, otherwise
> > it will not copy the source file.
> >
> > What I'm looking to do is trigger a copy of the source files, based on
> > whether my filter file changed.  In other words, even if my
> > source files haven't changed, if something in the file filter changes, I
> > want the source files to be re-parsed with the tokens in the filter file
> and
> > copied to the target directories.
> >
> > How do I detect that the filter file has changed and how do I
> > subsequently trigger a copy on the source files?
>
> Use the uptodate task to check whether the destination files are more
recent
> than all of your source files *and* your filter file, and set a property
if
> so. Then only execute the filter if the property isn't set.
>
> Jon
>
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