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From Vishal Vishnoi <>
Subject Re: How to preserve a property assigned via antcall on main build process?
Date Mon, 16 Oct 2006 18:20:53 GMT
I used to be in the same boat sometime back, where I thought using 
ant-contrib is building too many external dependency.

Over time I've realized that Ant-contrib is very stable and complements 
Ant very well. If you need to use 'if', then use 'if'. Don't fight it, 
otherwise you will end up with horrible hard to understand code.


David wrote:

>Dear members,
>  I am figthing for avoiding to use <if> from ant contrib lib, but I guess for solving
this problem there is no other solution.
>  I have the following targets:
>  <target name="target" depends="target-pre"
>   unless ="target.skip">
>  ...
>  </target>
>  Note: From working properly this target I need to compute the property target.var.value
(and this property could be assigned previoulsy if some target needed such property before)
>  Now 
>  <target name="target-pre" unless ="target.var.value">
>    <antcall target="compute-target1.var1"/>
>    <property name="target.var1.value" value="the value is: ${target.var}"/>
>  </target>
>  This is the best solution, but the problem comes from the fact that the property computed
on target compute-target1.var (property target.var) is not assigned after antcall invokation,
so it doesn't work.
>  but If I use instead of antcall, just dependences I get the value of target.var properly
>  <target name="target-pre" unless ="target.var"
>   depends="compute-target.var">
>    <property name="target.var.value" value="the value is: ${target.var}"/>
>  </target>
>  what I don't like about this solution is that the dependences targets are ALWAYS execute
even if the property target.var was defined or not. This is a simple case, but on my case
the computation of target.var is a complex task, so I have to run it always.
>  Using ant contrib it is inmidiatly using <if> task, but I don't want to add more
library dependence to my project.
>  Do you have any idea about how to solve this problem?
>  Thanks,
>  David
>Do you Yahoo!?
> Get on board. You're invited to try the new Yahoo! Mail.

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