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Subject: RE: Probs with property expansion in <for> loops
Date: Tue, 30 Aug 2005 09:23:20 -0400
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Thread-Topic: Probs with property expansion in <for> loops
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From: "Burgess, Benjamin" <BBurgess@tiaa-cref.org>
To: "Ant Users List" <user@ant.apache.org>
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In core ant, properties are immutable.  Also, there are no <for> loops.
However, using ant-contrib you can add a for loop.  Also with
ant-contrib you will have to use <var name=3D"updatelist" unset=3D"true"/>
to unset the property.

Ben Burgess

-----Original Message-----
From: Rebhan, Gilbert [mailto:Gilbert.Rebhan@huk-coburg.de]=20
Sent: Tuesday, August 30, 2005 9:18 AM
To: user@ant.apache.org
Subject: Probs with property expansion in <for> loops


Hi,

i have a problem with properties in <for>

scenario =3D

Three lists :
- list with all environments that should be served
  (loaded outside all loops)
- list with all servers of one environment
  (loaded in loop 2)
- list of files to be deleted on those servers
- list of files to be copied to those servers
  (generated in the outer loop 1 by a java class,
    loaded in loop 3 and loop 4)

Buildfile structure :

...

<!-- property =3D list with all environments -->
<loadfile property=3D"Lums" srcFile=3D"K:\r1p1l01a1\luminfo.txt" />

	<target name=3D"main" depends=3D"doall" />

	<target name=3D"doall">

		<!-- // start loop 1 // -->

	<for list=3D"${Lums}" param=3D"Lum">
	<sequential>
	<untar src=3D"K:\r1p1l01a1/@{Lum}/transfer/tarfile_@{Lum}.tar"=20
	   dest=3D"K:\r1p1l01a1/@{Lum}/serverdata"
	   overwrite=3D"true" />
			=09
	<loadfile property=3D"server" srcFile=3D"K:\r1p1l01a1\server_@{Lum}"
/>

<java classname=3D"de. ... .ParseCCLogs" failonerror=3D"true">
	<arg value=3D"K:\r1p1l01a1/@{Lum}/transfer" />
	<arg value=3D"K:\r1p1l01a1/@{Lum}/temp/updated.txt" />
	<arg value=3D"K:\r1p1l01a1/@{Lum}/temp/deleted.txt" />
...
</java>

<!-- files to be deleted on all servers-->	=09
<loadfile property=3D"updatelist"
srcFile=3D"K:\r1p1l01a1/@{Lum}/temp/updated.txt" />

<!-- files to be copied to all servers-->
<loadfile property=3D"deletelist"
srcFile=3D"K:\r1p1l01a1/@{Lum}/temp/deleted.txt" />


	<!-- // start loop 2 //  -->
	<for list=3D"${server}" param=3D"server">
	<sequential>
                       <!-- // start loop 3 // -->
		<for list=3D"${deletelist}" param=3D"delfile">
		<sequential>
		<echo message=3D"Delete file -> @{delfile}" />
		</sequential>
		</for> <!-- // end loop 3 // -->
    =20
                         <!-- // start loop 4 // -->
		<for list=3D"${updatelist}" param=3D"copyfile">
		<sequential>
		<echo message=3D"Copy file -> @{copyfile}" />
		</sequential>
		</for> <!-- // end loop 4 // -->

	</sequential>
	</for>	<!-- // end Loop 2 // -->
</sequential>
</for><!-- // end Loop 1 // -->


Problem =3D

Once the first time the updatelist and deletelist are loaded for the
first environment =3D @{Lum} it cannot be overwrited for the next
environment in the list ${Lums}.

debugmode says :
Override ignored for property updatelist
Override ignored for property deletelist
when getting into the loop for the second @{Lum}

Question =3D

How to make that loops work with a list of input properties,
properties expanded correct ?

If for loops are the wrong way, what should i do instead ?

I wanted to avoid several foreach loops.

Any hints ?


Regards, Gilbert

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