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Date: Thu, 30 Aug 2007 10:20:23 -0500
From: "Dominique Devienne" <ddevienne@gmail.com>
To: "Ant Users List" <user@ant.apache.org>
Subject: Re: R: global variables
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On 8/30/07, Pom=E8 Elisabetta <epome@axioma.it> wrote:
> Thank you, but I'm not sure I have understood.
> If I have 3 target (target A with an antcall to target B and an antcall t=
o
> another target C) and I define a property in target B I can't see its val=
ue
> in target C. So I thought that properties have the scope of the target in
> which they're defined. Am I wrong?
> But my problem is different 'cause I need to change a value due to some
> condition in order to decide a behavior. I have a foreach loop: inside th=
at
> loop I have to set "something" (a property? I don't think, 'cause propert=
ies
> are immutable) when I found a certain condition. Each time I enter the lo=
op
> I need to test this "something" in order to understand whether continue o=
r
> end the loop.

It sounds (antcall chain, foreach loops) like you are trying to use
Ant as an imperative scripting language with method calls and
variables. Ant is not designed for this, and although it has some
support for these constructs, you are using it "against the grain",
which leads to issues (because of property immutability).

Ant "way" is declarative, where high level targets *depend* on lower
level targets (as opposed to antcalling other targets), and loops are
usually built in to tasks, not explicit.

Rather that asking questions about using the scripting features of
Ant, tell us what you are trying to achieve at a higher level and we
may be able to point you to facilities in Ant that could achieve them.

There are things that Ant can't do out-of-the-box, but then one
switches to a real scripting language to achieve them (using <script>
or <scriptdef>), or to writing custom tasks in Java. --DD

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