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From "EJ Ciramella" <ejcirame...@upromise.com>
Subject RE: Trying (and failing) to build the nightly snapshot
Date Mon, 04 Aug 2008 13:54:31 GMT
Right - in an ideal world, sure. 

We're using ant for deployments and the first file is the MOST specific
file, the secondary one is the more generic file.

So, in a nutshell, we can't alter the order of the property files.

What is interesting though is if all the properties are in the SAME
file, there's no problem (as all the expansion can happen at once).  Can
I do something with concat?  <propertyfileset> or something?

If concat could do something like, "first found takes precedence but in
general add all the properties" that would be perfect...

-----Original Message-----
From: Steve Loughran [mailto:stevel@apache.org] 
Sent: Monday, August 04, 2008 9:48 AM
To: Ant Developers List
Subject: Re: Trying (and failing) to build the nightly snapshot

EJ Ciramella wrote:
> I think I misunderstood this particular bug.  It appears to be a
problem
> with $${someprop} versus loading two property files and the first one
> containing a ${property} that is set in the second one loaded.
> 
> To be explicit, if you have two property files, a.properties and
> b.properties, in the first one loaded you have a ${property} that is
set
> in b.properties, ant leaves it as ${}.
> 
> a.properties:
> 
> foo=bar
> 
> coolprop=${foo}:${from.b.properties}
> 
> 
> 
> 
> 
> b.properties:
> 
> from.b.properties=awesome
> 
> 
> 
> 
> build.xml:
> 
> <project default="go">
>     <target name="go" >
> 	<property file="a.properties" />   
>       <property file="b.properties" />
>         <echo>This is a problem: ${coolprop}</echo>
>     </target>
> </project>
> 
> You'll see this:
> 
> This is a problem: bar:${from.b.properties}

That's because property expansion takes place when the properties files 
are loaded. If you want properties from b.properties, load it before 
a.properties




-- 
Steve Loughran                  http://www.1060.org/blogxter/publish/5
Author: Ant in Action           http://antbook.org/

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