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Date: Thu, 11 Jul 2002 17:31:32 +0100 (BST)
From: =?iso-8859-1?q?Jose=20Alberto=20Fernandez?= <j_a_fernandez@yahoo.com>
Subject: Re: <import> enhancement, it's done, but do you like how it works?
To: Ant Developers List <ant-dev@jakarta.apache.org>, nicolaken@apache.org
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 --- Nicola Ken Barozzi <nicolaken@apache.org> wrote:
> Jose Alberto Fernandez wrote:
> ...
> > The fact that it is NOT a string. If you use a
> string
> > you will have to parse the data. What does it
> happen
> > if you have something like:
> > 
> >   <property name="parent"
> value="super.targetname"/>
> >   <antcall target="${parent}"/>
> > 
> > How do you know "parent" needs to be rewritten?
> 
> Rewritten? I don't understand...
> 
What does your code do if you have two levels of
import?

> > By the way, the exact syntax of the property is
> not
> > the point. The important points are:
> > 
> > 1) Make dificult to clash with current buildfiles:
> > 
> >   "ant::"
> 
> Instead of super I can use ant::super::targetname or
> anything else, it's 
> just an implementation issue.
> 

The whole point is to have that as a property so you
do not get confuse with regular text.

> 
> Try this, it works:
>    <property name="mbextra" value="super.mb2" />
>    <!-- redefine mb2 here; dependencies are not
> inherited but called by 
> super.mb2 -->
>    <target name="mb2" depends="super.mb2">
>      <echo message="*Redefined* Sub2 build called
> /pre/ :-)"/>
>      <antcall target="${mbextra}"/>
>      <echo message="*Redefined* Sub2 build called
> /post/ :-)"/>
>    </target>
> 
> Could you please add snippets that fail to work with
> current import 
> proposed implementation, so that I can understand
> you better right away 
> and maybe propose a solution?

Take the snipped above, and lets assume it is in file
buildA.xml with its import in buildB.xml.

Define buildC.xml as:

  <import file="buildA.xml">
  <target name="mb2" depends="super.mb2"/>

Now ${mbextra} should expand to "super.super.mb2" and
not to "super.mb2" since the super is the target in
"buildB.xml". But the above code will call the one in
buildA.xml. (If I understood you translation
correctly).

As for the solution, the translation scheme I proposed
in my previous message will do.

Jose Alberto


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