ant-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Mark Womack <mwom...@bevocal.com>
Subject RE: Error with the foreach task
Date Tue, 03 Jul 2001 18:14:37 GMT
Diane,

Thanks.  I updated to the current CVS version of Ant.java, rebuilt the jars,
and the problem is resolved.  Is there any chance of an interim 1.3.1
version (with just bug fixes) being released?  I am a little uncomfortable
having a custom, modified version of the ant jar.  I'd rather have an
"official" version and a directory of extra/optional task classes.

as always, thanks!
-Mark

-----Original Message-----
From: Diane Holt [mailto:holtdl@yahoo.com]
Sent: Monday, July 02, 2001 8:24 PM
To: ant-user@jakarta.apache.org
Subject: RE: Error with the foreach task


See:
  http://marc.theaimsgroup.com/?l=ant-dev&m=98838238130156&w=2

Diane

--- Mark Womack <mwomack@bevocal.com> wrote:
> I did a little more digging into the exception.  Line 206 in Ant.java is
> this:
> 
>   // Are we trying to call the target in which we are defined?
>   if (p1.getBaseDir().equals(project.getBaseDir()) &&
>       p1.getProperty("ant.file").equals(project.getProperty("ant.file"))
> &&
>       target.equals(this.getOwningTarget().getName())) { 
>          throw new BuildException("ant task calling its own parent
> target");
>   }
> 
> I'm guessing, from looking at the surrounding code, that the
> p1.getBaseDir()
> call is returning null.  This suggests that something is not set up
> correctly when calling the target from the <foreach> tag?  My <project>
> has
> a basedir attribute of ".".
> 
> I have tried embedding <echo> tags in the target called by foreach, but
> nothing gets printed.  I tried other tasks besides javac, and they crash
> with the same error.
> 
> So, I am stumped.  I am using Ant 1.3.  Is that an issue?
> 
> Thanks,
> -Mark
> 
> -----Original Message-----
> From: Mark Womack 
> Sent: Monday, July 02, 2001 11:48 AM
> To: 'ant-user@jakarta.apache.org'
> Subject: Error with the foreach task
> 
> 
> This is probably something obvious that I am missing.  But I have
> defined
> the following targets:
> 
> <taskdef name="foreach"
> classname="org.apache.tools.ant.taskdefs.optional.ForeachTask"/>
> <target name="build_experimental" depends="init, prepare_dirs">
>   <foreach target="build_experimental_dir" type="dir">
>     <param name="src.subdir">
>       <fileset dir="${build.java}" includes="*"/>
>     </param>
>   </foreach>
> </target>
> 
> <target name="build_experimental_dir">
>   <javac srcdir="${build.java}"
>          destdir="${build.classes}"
>          includes="${src.subdir}/*.java"
>          classpath="${CLASSPATH}">
>     <patternset excludesfile="${build.java}/build_excludes" />
>   </javac>
> </target>
> 
> Took me a while to figure out I needed to add the <taskdef>.  But after
> adding that, I still get the following error:
> 
> build_experimental:
> 
> BUILD FAILED
> 
> java.lang.NullPointerException
>         at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:206)
>         at
> org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:103)
>         at
> org.apache.tools.ant.taskdefs.optional.ForeachTask.executeTarget(Fore
> achTask.java:246)
>         at
> org.apache.tools.ant.taskdefs.optional.ForeachTask.executeParameters(
> ForeachTask.java:263)
>         at
> org.apache.tools.ant.taskdefs.optional.ForeachTask.executeParameters(
> ForeachTask.java:273)
>         at
> org.apache.tools.ant.taskdefs.optional.ForeachTask.execute(ForeachTas
> k.java:284)
>         at org.apache.tools.ant.Target.execute(Target.java:153)
>         at org.apache.tools.ant.Project.runTarget(Project.java:898)
>         at org.apache.tools.ant.Project.executeTarget(Project.java:536)
>         at org.apache.tools.ant.Project.executeTargets(Project.java:510)
>         at org.apache.tools.ant.Main.runBuild(Main.java:421)
>         at org.apache.tools.ant.Main.main(Main.java:149)
> 
> It is unclear to me what is causing the null pointer exception.  Is
> there
> something I can turn on in ant that will help me debug this?  Does
> anyone
> see an obvious problem with the task definitions or the way I am using
> <foreach> that I am missing?
> 
> Thanks!
> -Mark


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



__________________________________________________
Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail
http://personal.mail.yahoo.com/

Mime
View raw message