You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@ant.apache.org by "Jacob, Anil - MWT" <Ja...@menlolog.com> on 2003/12/12 23:10:32 UTC

disabling targets dynamically

 Is there a way to disable a target at runtime based on certain value from a property

 For example If I have - target 1, target 2, target 3 all of the are available when I run ant on HostA, where as when I run on Host B I want only target1 and target to be available.

Is this possible?
Anil

---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
For additional commands, e-mail: user-help@ant.apache.org

RE: disabling targets dynamically

Posted by "W. Sean Hennessy" <sh...@goldenhourdata.com>.
  <!-- on windows systems ${env.COMPUTERNAME} is host name -->

    <!-- target to evaluate which host -->
    <target name="HostEvalA.tgt.nm">
        <condition property="properties.isHostA">
            <and>
            <equals arg1=${env.COMPUTERNAME} arg2="HostA" />
            ${env.COMPUTERNAME} = "HostA"
           </and>
        </condition>
        <condition property="properties.isHostB">
            <and>
            ${env.COMPUTERNAME} = "HostB"
           </and>
        </condition>
    </target>

   <target name="HostEvalB.tgt.nm">
        <condition property="properties.isHostA">
            <and>
            <equals arg1=${env.COMPUTERNAME} arg2="HostB" />
            ${env.COMPUTERNAME} = "HostA"
           </and>
        </condition>
    </target>
    <!-- use of unless to exclude if Host B -->
    <target name="target2" depends=HostEvalB.tgt.nm" unless="properties.isHostB">
    </target>

-----Original Message-----
From: Jacob, Anil - MWT [mailto:Jacob.Anil@menlolog.com] 
Sent: Friday, December 12, 2003 2:11 PM
To: Ant Users (E-mail)
Subject: disabling targets dynamically



 Is there a way to disable a target at runtime based on certain value from a property

 For example If I have - target 1, target 2, target 3 all of the are available when I run ant on HostA, where as when I
run on Host B I want only target1 and target to be available.

Is this possible?
Anil

---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
For additional commands, e-mail: user-help@ant.apache.org



---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
For additional commands, e-mail: user-help@ant.apache.org

Re: disabling targets dynamically

Posted by Antoine Lévy-Lambert <an...@antbuild.com>.
Note that the if and unless attributes of the target tag do not work on 
the value of a property, but simply check whether the property is defined.
In a typical pure ant scenario, you need a target init where you are 
going to set a property on.hosta if you are on hosta and on.hostb if you 
are on hostb

<target name="init">
    <!-- find out on which host you are, may be with the HOSTNAME 
command -->
    <exec  executable="hostname" outputproperty="myhost"/>
    <condition property="on.hosta">
        <equals arg1="${myhost}" arg2="HostA"/>
    </condition>
    <condition property="on.hostaorb">
      <or>
        <equals arg1="${myhost}" arg2="HostA"/>
        <equals arg1="${myhost}" arg2="HostB"/>
    </or>
    </condition>
</target>
<target name="target1" if="on.hostaorb" depends="init">
    <!-- do something --->
</target>

<target name="target2" if="on.hostaorb" depends="init">
    <!-- do something --->
</target>

<target name="target3" if="on.hosta" depends="init">
    <!-- do something --->
</target>

There are also if tasks in antelope and ant-contrib which you can use too.


Antoine


Corey Jewett wrote:

> target has unless and if attributes that should let you do this.
>
> http://ant.apache.org/manual/using.html#targets
>
> Corey
>
>
> On Friday, December 12, 2003, at 02:10 PM, Jacob, Anil - MWT wrote:
>
>>
>>  Is there a way to disable a target at runtime based on certain value 
>> from a property
>>
>>  For example If I have - target 1, target 2, target 3 all of the are 
>> available when I run ant on HostA, where as when I run on Host B I 
>> want only target1 and target to be available.
>>
>> Is this possible?
>> Anil
>>



---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
For additional commands, e-mail: user-help@ant.apache.org

Re: disabling targets dynamically

Posted by Corey Jewett <cj...@syntheticplayground.com>.
target has unless and if attributes that should let you do this.

http://ant.apache.org/manual/using.html#targets

Corey


On Friday, December 12, 2003, at 02:10 PM, Jacob, Anil - MWT wrote:

>
>  Is there a way to disable a target at runtime based on certain value 
> from a property
>
>  For example If I have - target 1, target 2, target 3 all of the are 
> available when I run ant on HostA, where as when I run on Host B I 
> want only target1 and target to be available.
>
> Is this possible?
> Anil
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
> For additional commands, e-mail: user-help@ant.apache.org
>


---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
For additional commands, e-mail: user-help@ant.apache.org