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From "Sunil Goklani" <upsidedo...@hotmail.com>
Subject RE: Dynamic references to properties files
Date Wed, 24 May 2006 00:35:13 GMT
Thank you Rob.  That solved it!

-Sunil
>From: "Anderson, Rob (Global Trade)" <Rob.Anderson@nike.com>
>Reply-To: "Ant Users List" <user@ant.apache.org>
>To: "Ant Users List" <user@ant.apache.org>
>Subject: RE: Dynamic references to properties files
>Date: Mon, 22 May 2006 11:06:19 -0700
>
>No. Not the case. I believe you are confused. You can set a prefix for
>retrieving environment properties like so...
>
><property environment="env"/>
>
>This will allow you to retrieve environment variable as you say, however
>the existence of ${env.MYDIR} does not mean that a property named ${env}
>exists. In fact, I often use the ${env} property as I recommended as
>well as using "env" as a prefix for environment properties in the same
>build file without conflict or overlap.
>
>Play around with it in a build.xml file and see for yourself.
>
>-Rob Anderson
>
> > -----Original Message-----
> > From: bill/wilandra [mailto:bill@wilandra.com]
> > Sent: Monday, May 22, 2006 10:57 AM
> > 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!
> > >
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