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From Asaf Mesika <asaf.mes...@gmail.com>
Subject RE: Dynamic references to properties files
Date Mon, 22 May 2006 19:06:47 GMT
Env is commonly used, but it is not defined unless you define it explicitly
using :
  <property environment="myenv"/>

Asaf


> -----Original Message-----
> From: bill/wilandra [mailto:bill@wilandra.com]
> Sent: Monday, May 22, 2006 7:57 PM
> To: 'Ant Users List'
> Subject: RE: Dynamic references to properties files
> 
> Isn't env a well known property for retrieving op sys environment vars
> (e.g., ${env.MYDIR})? If so, can it ever not be set? If it is always set
> then the <fail unless="env"> will never fail regardless of whether the
> user
> sets the env property or not on the command line.
> 
> Bill
> 
> -----Original Message-----
> From: Anderson, Rob (Global Trade) [mailto:Rob.Anderson@nike.com]
> Sent: Monday, May 22, 2006 10:11 AM
> To: Ant Users List
> Subject: RE: Dynamic references to properties files
> 
> You examples below are a little confusing, so forgive me if I am
> completely
> missing the mark with this advice.
> 
> My suggestion is to not try to fit all the properties into a single file.
> Try creating a properties file for each environment.
> 
> dev.properties
> ===============
> webpath=http://localhost:7001/cis-7.6.0
> 
> qa.properties
> =============
> webpath=http://some-server.com:8185/cis-7.6.0
> 
> staging.properties
> ==============
> webpath=http://some-server2.com:8185/cis-7.6.0
> 
> Then in your build.xml you can load the appropriate properties file based
> on
> the value of another property, like ${env} for example.
> 
> build.xml
> ===========
> ...
> <property file="${env}.properties"/>
> ...
> <!-- make sure the user set the env property when running ant --> <fail
> unless="env">You must specify the env property on the command line. For
> example:
> ant -Denv=dev
> </fail>
> 
> So based in the value of ${env} you will have a different value for
> ${webpath}. You can do the same for other environment specific properties
> as
> well.
> 
> I hope this helps.
> 
> -Rob Anderson
> 
> > -----Original Message-----
> > From: Sunil Goklani [mailto:upsidedowne@hotmail.com]
> > Sent: Friday, May 19, 2006 6:06 PM
> > To: user@ant.apache.org
> > Subject: Dynamic references to properties files
> >
> > Hi All,
> >
> > I had a question on how I could use two variables to access
> > information from my properties files.  I am trying to build an ant
> > script to generate configuration files for all of my development, qa,
> > and staging environments.
> >
> > For example I have the following in a properties file:
> >
> > #Configuration for adapterconfig.xml
> > adapterconfig.webpath=<property
> > name="webPath">http://localhost:7001/cis-7.6.0</property>
> > assem1-adapterconfig.webpath=<property
> > name="webPath">http://some-server.com:8185/cis-7.6.0</property>
> > assem2-adapterconfig.webpath=<property
> > name="webPath">http://some-server2.com:8185/cis-7.6.0</property>
> >
> > The first property is what developers use and check/label into the
> > cvs.  The other values are what I am supposed to have for my
> > respective environments.
> >
> > Suppose I input "-Dset.environment=assem1" as a command line argument.
> > Is there a way possible for me to access the value of
> > ${assem1-adapterconfig.webpath} with a variable combination of
> > "${${set.environment}-${adapterconfig.webpath}}".
> >
> > I tried it like that and I got an error because it was replacing the
> > actual value of "adapterconfig.webpath" before it even got to where I
> > wanted it to.
> >
> > Second approach:
> >
> > I created a temp property and built out the correct string <property
> > name="p-temp"
> > value="${set.open}${set.environment}-adapterconfig.webpath${se
> > t.close}"/>
> > the set.open and set.close are the ${ and } respectively.
> > However now in my
> > destination file, it actually replaces with:
> > "${assem1-adapterconfig.webpath}" and not the value itself.
> > Is there anyway
> > I can make ant recognize this string as a property?
> >
> > Thanks all in advance!
> >
> > _________________________________________________________________
> > Express yourself instantly with MSN Messenger! Download today
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> >
> >
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> >
> >
> >
> 
> 
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> 
> 
> 
> 
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