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Message-ID: <879A5AD5DD0ED511891F0003473A9B560E23F551@Z011004>
From: Jan.Materne@rzf.fin-nrw.de
To: user@ant.apache.org
Subject: AW: Overriding a property and subsequently derived properties
Date: Wed, 1 Sep 2004 08:28:44 +0200 
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The manual to <ant> sais:

Parameters
inheritAll=20
  If true, pass all properties to the new Ant project. Defaults to =
true.=20

You should try it with setting to false. Otherwise ${Y} is set and cant =
be
changed
because props are immutable.


Jan


> -----Urspr=FCngliche Nachricht-----
> Von: Richard Grey [mailto:richard@haamdhani.com]
> Gesendet am: Dienstag, 31. August 2004 19:19
> An: user@ant.apache.org
> Betreff: Overriding a property and subsequently derived properties
>=20
> I have two targets A and B in a single build.xml file. Both targets=20
> utilise a single property X which is set differently (via an=20
> environment
>  variable).
> =20
> Normally, I would use a command line to set the environment=20
> variable and
>  call target A, then reset the environment variable and then=20
> call target
>  B.
> =20
> All well and good, but I wish to automate this manual process. I've=20
> tried using a batch file with the above, but the batch file finishes=20
> completely after the first target completes.
> =20
> So I thought I'd get Ant to do it for me from another target C. I've=20
> tried using <antcall> and overriding property X, but my=20
> problem is that=20
> despite property Y being derived from X, property Y never=20
> changes when=20
> property X is overridden.
> =20
> Follow ?! Is this expected ? Can anybody please help, or=20
> suggest what I=20
> could/should do to achieve what I want, ie property Y also changing ?
> =20
> Obviously, this is a simplified test case, and just overrding=20
> property Y
>  isn't ideal. In the real world, I have a multitude of other=20
> properties=20
> derived from the "changing" original.
> =20
> Thanks
> =20
> --
> =20
> <?xml version=3D"1.0" encoding=3D"UTF-8"?>
> =20
> <project basedir=3D".">
> =20
>         <property environment=3D"env"/>
> =20
>         <property name=3D"X" value=3D"${env.MY_VARIABLE}" />
>         <property name=3D"Y" value=3D"${X}/Y" />
>        =20
>         <target name=3D"A">
>                <echo message=3D"X is ${X}"/>
>                <echo message=3D"Y is ${Y}"/>
>         </target>
> =20
>         <target name=3D"B">
>                <echo message=3D"X is ${X}"/>
>                <echo message=3D"Y is ${Y}"/>
>         </target>
> =20
> =20
>         <target name=3D"C">
>                <ant antfile=3D"temp.xml" target=3D"A">
>                        <property name=3D"X" value=3D"A" />
>                </ant>
>                <ant antfile=3D"temp.xml" target=3D"B">
>                        <property name=3D"X" value=3D"B" />
>                </ant>
>         </target>
>        =20
> </project>
> =20
> --
> =20
> > set MY_VARIABLE=3DZ
> > ant -f temp.xml C
> Buildfile: temp.xml
> =20
> C:
> =20
> A:
>      [echo] X is A
>      [echo] Y is Z/Y
> =20
> B:
>      [echo] X is B
>      [echo] Y is Z/Y
> =20
> BUILD SUCCESSFUL
>=20
> Total time: 0 seconds
>=20
>=20

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