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From "Anderson, Rob (Global Trade)" <>
Subject RE: Targeting Multiple Environments
Date Wed, 31 May 2006 16:17:45 GMT
I use the same strategy, except I use plain old property files instead
of xml. I have also added a user-friendly error message or input task if
the TARGET_ENV prop is missing:

<fail unless="TARGET_ENV">You must specify TARGET_ENV on the command
line. For example...
ant -DTARGET_ENV=dev deploy</fail>


<target name="getTargetEnv" unless="TARGET_ENV">

Why are you not satisfied with this solution?

-Rob A

> -----Original Message-----
> From: Kanjo, Samer [] 
> Sent: Wednesday, May 31, 2006 6:26 AM
> To: Ant Users (E-mail)
> Subject: Targeting Multiple Environments
> I am curious as to how others are using Ant to target 
> multiple environments such as development, test, training, 
> and production. In my world each environment typically has 
> its own set of databases, servers, and application servers.
> What I have done is externalize all properties into a set of 
> property files that end with the target environment name (The 
> target environment names are dev, test, train, and prod). So 
> if I had a properties file named "myprops.xml" included in 
> the build I would create one for each environment naming the 
> files as such: "", "myprops.xml.test", 
> "myprops.xml.train", "". The build script 
> would check for an environment variable named TARGET_ENV and 
> attempt to load the file "myprops.xml" suffixed with the 
> value of TARGET_ENV. Once loaded all the properties 
> associated with that target are available to the build script.
> In order for this to work I must specify a value for 
> TARGET_ENV on the command line. To simplify the command line 
> I created a batch/shell script that accepts the target 
> environment and a set of Ant targets and creates the command 
> line used to invoke Ant.
> This works fine but I am just not happy with the solution. I 
> have searched the web for solutions others have created for 
> this problem but it doesn't seem to be anything anyone really 
> talks about or I am looking in the wrong places.
> So what have you done?
> Samer Kanjo
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