targets depending on the value of a property

["Reuleaux, Andreas" <A....@klopotek.de>]

Hi ants, 

can I make a decision whether to do one target or another
depending on the value of a property like this:

  <target name="a">
    <echo message="hi from a" />
  </target>

  <target name="b">
    <echo message="hi from b" />
  </target>

  <target name="say-hi">
    do either target a or target b depending on the value of the property
from
    ...do all the rest of say-hi
  </target>

calling ant with
  >ant say-hi -Dfrom=a 
should do target a before the rest of say-hi, whereas
  >ant say-hi -Dfrom=b
should do target b before the rest of say-hi

something like
  <target name="a" if="from">
    <echo message="hi from a" />
  </target>
is not really of use to, since it only asks whether from
is set at all, not what its value is.

something like if="from==a" is needed instead.

Thanks for any help in advance.

--
Andreas

Re: targets depending on the value of a property

[Stefan Bodewig <bo...@bost.de>]

>>>>> "RA" == Reuleaux, Andreas <A....@klopotek.de> writes:

 RA> Hi ants, can I make a decision whether to do one target or
 RA> another depending on the value of a property like this:

You can't, decissions are only made depending on the existance of a
property.

How does this property you want to decide upon get its value? Maybe
you can rewrite this to use the set/not set logic Ant employs?

Stefan