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Date: Mon, 22 Jun 2009 16:02:55 -0700 (PDT)
From: jscripter <pc88mxer@gmail.com>
To: user@ant.apache.org
Subject: Re: factoring out commonality in sequences of tasks
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Michael Ludwig-6 wrote:
> 
> jscripter schrieb am 22.06.2009 um 14:16:24 (-0700):
> 
>> >   <target name="deploy-using-copy" depends="trg1,trg3,trg5">
>> >   ...
>> > 
>> >   <target name="deploy-using-link" depends="trg1,trg3,trg5">
>> >   ...
> 
>> I need to preserve the execution order of the tasks, so I don't think
>> that would work.
> 
> From a recent post of David Weintraub:
> 
> | You say that B depends upon A, and C depends upon A and that A depends
> | upon D, and both Ant and Make will calculate out the build order of
> | your components. If you make a change (Say B now depends upon both A
> | and C, Ant [...] will adjust the build without major rewriting of your
> | build script.
> 
> This suggests you could guarantee execution order by setting up the
> dependency matrix accordingly. Let your main tasks depend on trg5, which
> in turn depends on trg3, which in turn depends on trg1.
> 
> Also, take a look at the manual, which has this example:
> 
>     <target name="A"/>
>     <target name="B" depends="A"/>
>     <target name="C" depends="B"/>
>     <target name="D" depends="C,B,A"/>
> 
> 	Suppose we want to execute target D. From its depends attribute, you
> 	might think that first target C, then B and then A is executed. Wrong!
> 	C depends on B, and B depends on A, so first A is executed, then B,
> 	then C, and finally D.
> 
> http://ant.apache.org/manual/using.html#targets
> 
> Michael Ludwig
> 
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> 
> 
> 
The problem is that task3 has to come after copy-files-2 OR link-files-2
depending on which one I want to execute.

So, to use an abbreviated example, I can get most of the execution order
specified with
the following declarations:

<target name="deploy-using-copy"
depends="target-1,target-copy-2,target-3">...</target>
<target name="deploy-using-link"
depends="target-1,target-link-2,target-3">...</target>

<target name="target-copy-2" depends=target-1">...</target>
<target name="target-link-2" depends="target-1">...</target>

but then how do I set up the depends for target-3?

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