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Subject: RE: <foreach> & <propertycopy> (was 'RE: Automated source config
 model?')
Date: Thu, 5 Sep 2002 14:36:48 -0400
Message-ID: <9093431B64301C47986EF078512912AD2C9F83@xchange.stargus.com>
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Thread-Topic: <foreach> & <propertycopy> (was 'RE: Automated source config
 model?')
Thread-Index: AcJVBllFarIX9kiIRE2ZL2ui/5t74QABKQog
From: "Matt Lyon" <matt@stargus.com>
To: "Ant Users List" <ant-user@jakarta.apache.org>
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X-Spam-Rating: daedalus.apache.org 1.6.2 0/1000/N

Yes,=20

Figured it out as follows:

  <!-- Targets to check out the souce code from CVS. -->=20
  <target name=3D"checkout"=20
          depends=3D"init"=20
          description=3D"Checks out tagged directories listed in the =
config.properties file.">
    <foreach list=3D"${components}"
             target=3D"checkout-dirs"
             param=3D"component"/>
  </target>

  <target name=3D"checkout-dirs">=20
    <propertycopy name=3D"complist"
                  from=3D"${component}.dirs"/>
    <propertycopy name=3D"comptag"
                  from=3D"${component}.tag"
                  silent=3D"true"/>
    <foreach list=3D"${complist}"
             target=3D"checkout-dir"
             param=3D"ckout.pkg">
      <param name=3D"comptagValue" value=3D"${comptag}"/>
    </foreach>
  </target>

  <target name=3D"checkout-dir">
    <if>   =20
    <equals arg1=3D"${comptagValue}" arg2=3D"$${comptag}" />
      <then>
        <echo message=3D"NOTE: no tag defined for ${ckout.pkg}; checking =
out from main code line"/>=20
        <cvs cvsRoot=3D"${cvsRoot}"
             dest=3D"${src}"
            command=3D"co -PA ${ckout.pkg}"/>
      </then>
      <else>
        <echo message=3D"checking out ${ckout.pkg} with tag =
${comptagValue}"/>
        <cvs cvsRoot=3D"${cvsRoot}"
             dest=3D"${src}"
             command=3D"co -P -r ${comptagValue} ${ckout.pkg}"/>
      </else>
    </if>
  </target>

Thanks!

Matt

-----Original Message-----
From: Dominique Devienne [mailto:DDevienne@lgc.com]
Sent: Thursday, September 05, 2002 2:14 PM
To: 'Ant Users List'
Subject: RE: <foreach> & <propertycopy> (was 'RE: Automated source
config model?')


You can easily check for that case using:

<condition or if>
  <equals arg1=3D"${comptag}" arg2=3D"$${comptag}" />
</condition or if>

You could also use a pseudo-tag called 'head', and check for the value
specifically. And that would allow to add a

<fail message=3D"..." unless=3D"comptag" />

to fail with a nice message if comptag ends up really being not defined!

Cheers, --DD

-----Original Message-----
From: Matt Lyon [mailto:matt@stargus.com]=20
Sent: Thursday, September 05, 2002 12:52 PM
To: Ant Users List
Subject: RE: <foreach> & <propertycopy> (was 'RE: Automated source =
config
model?')

Diane,

Yes it was. Thanks. However, I'm actually not out of the woods yet, as =
it
turns out, contrary to my previous response (a rush to irrational
exuberance, perhaps?).

I'm still wrestling with the ${comptag} property value. It appears that =
I
have a bit of a catch-22. It seems that I need to set the nested <param
name=3D"comptag" value=3D"${comptag}"/> element in my <foreach task> in =
my
"checkout-dirs" target to pass this along to the subsequent =
"checkout-dir"
target to get it to recognize the tags, because if I don't, the target =
sees
${comptag} as not defined and checks out from the main code line. =
However,
if I do so and comment out one of the ${component}.tag values in my
properties file, it causes the value to be passed in as ${comptag}, =
which
results in:
checkout-dir:
     [echo] checking out starman/src/com/stargus/web with tag ${comptag}
      [cvs] cvs [server aborted]: no such tag ${comptag}

Let me post the two targets I've got now:

  <target name=3D"checkout-dirs">=20
    <propertycopy name=3D"complist"
                  from=3D"${component}.dirs"/>
    <propertycopy name=3D"comptag"
                  from=3D"${component}.tag"
                  silent=3D"true"/>
    <echo message=3D"complist is set to ${complist}"/>
    <echo message=3D"comptag is set to ${comptag}"/>
    <foreach list=3D"${complist}"
             target=3D"checkout-dir"
             param=3D"ckout.pkg">
      <!--param name=3D"comptag" value=3D"${comptag}"/-->
    </foreach>
  </target>

  <target name=3D"checkout-dir">
    <if>
      <isset property=3D"comptag"/>
      <then>
        <echo message=3D"checking out ${ckout.pkg} with tag =
${comptag}"/>
        <cvs cvsRoot=3D"${cvsRoot}"
             dest=3D"${src}"
             command=3D"co -P -r ${comptag} ${ckout.pkg}"/>
      </then>
      <else>
        <echo message=3D"NOTE: no tag defined for ${ckout.pkg}; checking =
out
from main code line"/>=20
        <cvs cvsRoot=3D"${cvsRoot}"
             dest=3D"${src}"
            command=3D"co -PA ${ckout.pkg}"/>
      </else>
    </if>
  </target>

Basically, the requirement is that I need to be able to define named =
value
pairs (tags and srcdirs), have ant iterate over them, and checkout the
srcdirs from the defined tag, or from the main code line if the tag is =
not
defined. So I either need to figure out how to make isset in my <if> =
task
recognize when comptag is not set to a legitimate value or perhaps =
figure
out how to get ${comptag} passed without having to use a nested <param>
element.

Matt
-----Original Message-----
From: Diane Holt [mailto:holtdl@yahoo.com]
Sent: Thursday, September 05, 2002 1:38 PM
To: Ant Users List
Subject: RE: <foreach> & <propertycopy> (was 'RE: Automated source
config model?')


--- Matt Lyon <matt@stargus.com> wrote:
> That rocks! Thanks for the help. If I use your second suggestion in
> conjunction with my original "checkout-dirs" target (sans the nested
> <param> you suggested, which also works!) I get exactly the
> functionality I was looking for. I'm still a little puzzled as to why =
I
> needed the nested <param> element to pass ${comptag} to checkout-dir
> target explicitly in scenario 1, but since I have something that works
> now, I won't bother banging my head against that one right now. Thanks
> again...

When I fix the two typo's you had in your listing, this is what I get
(changed the <cvs> stuff to just echo out the 'co' command line):
checkout-dir-tag:
  command=3D"co -P -r V1_0_6_183 starman/src/com/stargus/platform"

checkout-dir-tag:
  command=3D"co -P -r V1_0_6_183 starman/src/com/stargus/web"

checkout-dir-tag:
  command=3D"co -P -r V1_0_6_183 starman/src/web"

checkout-dir-tag:
  command=3D"co -P -r V1_0_7_184 =
starman/src/com/stargus/platform/content"

That's what you wanted, right?

Diane

=3D=3D=3D=3D=3D
(holtdl@yahoo.com)



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