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From "EJ Ciramella" <>
Subject RE: Uptodate working one way only
Date Tue, 12 Aug 2008 15:27:52 GMT
Maybe I'm still not understanding, but doesn't copy only copy over bits
that have changed?

So you're copying the idl files to <somedirectory> and then from that
generating various java files?  If the copy doesn't do anything, then
again, you'll have to test for the uptodate status of the idl files and
then and only then generate new java files.

Did I miss again?

-----Original Message-----
From: Evgeny [] 
Sent: Tuesday, August 12, 2008 3:58 AM
Subject: Re: Uptodate working one way only

No one replied, perhaps I did not make myself clear.

I have a problem where I have a list of files scattered all over the
place .. the list is in a file.
Then I have no problems copying files with <mapper type="flatten"/>
and get a nice directory
with all those files copied into it.

But there is an <exec> task that I run on these files, that generates
.java from .idl and the problem
is that each idl is generated into multiple java files.

So when an idl file is copied with a new version, or a new idl file is
copied -- I need to clean the
generated files and generate everything fresh again. A process that
takes several minutes, and
I don't want to do this if no idl files were changed.

So I thought using the <uptodate> task is most appropriate ... but
here is the catch, it works
the wrong way. I have a <fileset> from that list-in-a-file, and I have
a directory with all those
files copied -- and <uptodate> does not provide a solution comparing
one to another in a way
that I will know when a <copy> is going to be made. And <copy> does
not provide something
like the "property" attribute that <uptodate> has, though it works in
exactly the way I need.

Other than writing custom tasks for Ant that will give me the
usability of <uptodate> with the
functionality of <copy>, is there any other way that I am missing?


On Wed, Aug 6, 2008 at 5:20 PM, Evgeny <> wrote:
> Hi Ant users,
> I wish there was a way to use the uptodate task in the other
> direction, not check source against target but check target against
> source. Since my list of files in source comes from a list in a text
> file, and it's easy to use a mapping to map them to the place where
> they are copied to (aggregated). But I want to have a way to use
> antcall or something similar if there is anything needs to be copied,
> and it's almost impossible with the current uptodate task.
> Regards,
> Evgeny

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