Mailing-List: contact ant-user-help@jakarta.apache.org; run by ezmlm
From: glennm@ca.ibm.com
To: ant-user@jakarta.apache.org
Message-ID: <87256936.00726108.00@d53mta05h.boulder.ibm.com>
Date: Wed, 9 Aug 2000 16:49:13 -0400
Subject: Re: Using if/unless within a target
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Don't use property substitution. =A0Do

<target name=3D"test1" depends=3D"check_for_depend" if=3D"string.presen=
t">
...
</target>

The if attribute is simply expecting the name of the attribute. =A0The =
way
you have it coded, ant will replace string.present with ${string.presen=
t},
since it can't find it at parse time (unless they've changed things in =
the
week that I've been on vacation). =A0Just before the target is executed=
, it
looks for property ${string.present}, not string.present.

Glenn McAllister
TID - Software Developer - VisualAge for Java
IBM Toronto Lab, (416) 448-3805
"An approximate answer to the right question is better than the
right answer to the wrong question." - John W. Tukey


Please respond to ant-user@jakarta.apache.org

To: =A0 =A0 =A0 =A0"'ant-user@jakarta.apache.org'" <ant-user@jakarta.ap=
ache.org>
cc:
Subject: =A0 =A0 =A0 =A0Using if/unless within a target


I am trying to use "if" within a target tag, and the documentation
indicates
that if the property is set, the target will be executed. =A0The small
buildfile below indicates that this is not the case. =A0When I execute =
this
buildfile, I would expect to see: "executing test1", instead I don't se=
e
any
echo messages. =A0Likewise, if I replace the "if" with "unless", I see =
both
echo messages.

Have I set this up incorrectly? =A0When I turn on verbose, I see the me=
ssage
that "string.present" is set to true.
This behavior seems buggy and contrary to the documentation.

I am using the release version 1.1, and have also tried it with last
night's
build (08/09) with the same result.

Ralph Bohnet

------
<project name=3D"testConditions" default=3D"all" >
=A0<target name=3D"check_for_depend" >
=A0 =A0<available property=3D"string.present" classname=3D"java.lang.St=
ring" />
=A0 =A0<available property=3D"not.present" classname=3D"foo" />
=A0</target>

=A0 <target name=3D"test1" depends=3D"check_for_depend" if=3D"${string.=
present}">
=A0 =A0<echo message=3D"executing test1"/>
=A0</target>

=A0 <target name=3D"test2" depends=3D"check_for_depend" if=3D"${not.pre=
sent}">
=A0 =A0<echo message=3D"executing test2"/>
=A0</target>

=A0 <target name=3D"all" depends=3D"test1,test2" />
</project>
--------


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