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Date: Thu, 23 Aug 2001 14:06:39 -0700 (PDT)
From: Edgar "S�nchez" <vesanchez@yahoo.com>
Subject: Re: Making Jumps or doing Loops!!
To: ant-user@jakarta.apache.org
In-Reply-To: <20010823205215.10921.qmail@web13407.mail.yahoo.com>
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  Thank you Diane, and all you guys

--- Diane Holt <holtdl@yahoo.com> wrote:
> And of course, right after I send it again, I
> realize there's a d'oh! in
> it -- the "doit" target actually does run 10 times,
> not 9 (my parenthetic
> about it not being zero-based is completely wrong,
> since of course it is
> zero-based, so 9 is the last number that gets echoed
> out -- d'oh! :)
> 
> Diane
> 
> --- Diane Holt <holtdl@yahoo.com> wrote:
> > [Sorry if this ends up getting posted twice, but
> it was the first one I
> > sent, and I've yet to see it come through, so I'm
> not sure if it really
> > went out.]
> > 
> > Actually, I'd take advantage of some of the new
> stuff available in 1.4
> > (finally found some time to pick it up and start
> trying things out :) --
> > namely, the new "inheritAll" attr for <antcall>
> and the new <condition>
> > task, in conjunction with <propertyfile>'s
> incrementing functionality.
> > For
> > example:
> > 
> >   <property name="maxCount" value="10"/>
> > 
> >   <target name="doWhile">
> >     <propertyfile file="counter.properties">
> >       <entry key="counter" type="int"
> operation="+"/>
> >     </propertyfile>
> >     <property file="counter.properties"/>
> >     <condition property="loopDone">
> >       <equals arg1="${counter}"
> arg2="${maxCount}"/>
> >     </condition>
> >     <antcall target="doit"/>
> >   </target>
> > 
> >   <target name="doit" unless="loopDone">
> >     <echo message="Do stuff here..."/>
> >     <antcall target="doWhile" inheritAll="no"/>
> >   </target>
> > 
> > will "Do stuff here" 9 times (it's not zero-based
> :)  [Note: Make sure
> > something removes counter.properties before the
> "doit" target gets run.]
> > 
> > Diane
> > 
> > --- Don Taylor <donald_l_taylor_jr@yahoo.com>
> wrote:
> > > 
> > > --- Edgar S�nchez <vesanchez@yahoo.com> wrote:
> > > >   Thanks Don
> > > > 
> > > >     just a question.
> > > >    When you put the sample of the counter the
> "."
> > > > after the counter means that the value will
> increment
> > > > in one??
> > > 
> > > Not the value, the property name. I'm creating a
> series of properties:
> > > 
> > > counter
> > > counter.
> > > counter..
> > > counter...
> > > 
> > > The value is whatever.
> > > 
> > > -- Don
> > > 
> > > >    <property name="${counter}."
> value="whatever" />
> > > >   or how do I increment in one the variable
> value of
> > > > my counter?
> > > > 
> > > >   Thanks again
> > > > VES
> > > > 
> > > > 
> > > > --- Don Taylor <donald_l_taylor_jr@yahoo.com>
> wrote:
> > > > > 
> > > > > --- Edgar S�nchez <vesanchez@yahoo.com>
> wrote:
> > > > > >   Hi everyone is Vincent again...
> > > > > > 
> > > > > >     now I've 2 questions, well those are
> for the
> > > > > same
> > > > > > reason..
> > > > > >   I was wondering if here in Ant could I
> make some
> > > > > > jumps in order to repeat the same
> procedure with
> > > > > other
> > > > > > caracteristics, 
> > > > > 
> > > > > Yes, check out the antcall task. This allows
> you to
> > > > > execute the
> > > > > same target multiple times with different
> sets of
> > > > > "inputs".
> > > > > 
> > > > > 
> > > > > or if I can use loops like For or
> > > > > > While to do the same, keeping a counter in
> order
> > > > > to
> > > > > > make conditions to execute the same
> procedure or
> > > > > same
> > > > > > target with diferent actions.
> > > > > > 
> > > > > >   Is it possible?
> > > > > 
> > > > > When looping, you have to create a
> "kick-out"
> > > > > condition. I used the
> > > > > target's unless attribute. The idea is to
> loop until
> > > > > the property is
> > > > > set. However, because a target can't antcall
> itself,
> > > > > you have to
> > > > > replicate the target and have them
> cross-call each
> > > > > other:
> > > > > 
> > > > > 
> > > > > <target name="worker">
> > > > >   <!-- This does the actual work. May depend
> on
> > > > > other workers. -->
> > > > > </target>
> > > > > 
> > > > > <target name="looper_1" depends="worker"
> > > > > unless="some.condition">
> > > > >   <antcall target="looper_2"/>
> > > > > </target>
> > > > > 
> > > > > <target name="looper_2" depends="worker"
> > > > > unless="some.condition">
> > > > >   <antcall target="looper_1"/>
> > > > > </target>
> > > > > 
> > > > > 
> > > > > This takes care of while loops. I've never
> tried
> > > > > implementing a for
> > > > > loop in Ant. I suppose you could do
> something like
> > > > > the following
> > > > > in the worker target:
> > > > > 
> > > > > <property name="counter" value="counter" />
> > > > > 
> > > > > <target name="worker">
> > > > >   <property name="${counter}."
> value="whatever" />
> > > > > </target>
> > > > > 
> > > > > Then if you wanted to loop 3 times:
> > > > > 
> > > > > <target name="looper_1" depends="worker"
> > > > > unless="counter...">
> > > > >   <antcall target="looper_2"/>
> > > > > </target>
> > > > > 
> > > > > <target name="looper_2" depends="worker"
> > > > > unless="counter...">
> > > > >   <antcall target="looper_1"/>
> > > > > </target>
> > > > > 
> > > > > -- Don
> > > > >
> > > > > >   thank you
> > > > > > VES
> > 
> > =====
> > (holtdl@yahoo.com)
> > 
> > 
> > 
> > __________________________________________________
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> 
=== message truncated ===


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