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From Matt Benson <gudnabr...@yahoo.com>
Subject Re: Maven Ant Task problem when used with Ant 1.7.0
Date Wed, 10 Jan 2007 19:13:06 GMT
Sorry... to go farther down the stacktrace, I should
correct myself:  it appears that the Maven guys don't
set a project on their fileset when they create it, or
something.  So it's a bug for them, but possibly a
regression for Ant after all, if you want to look at
it that way.

-Matt

--- Matt Benson <gudnabrsam@yahoo.com> wrote:

> That looks like a bug in the Maven task.  The only
> way
> for an NPE to be triggered here would seem to
> indicate
> the task passed null as the project argument to
> getDirectoryScanner().  Looking at Ant 1.6.5's code
> it
> appears that the same exception would be thrown,
> however, so I am confused how this problem only
> showed
> up with Ant 1.7.0.
> 
> -Matt
> 
> --- Loic Jay <Loic.Jay@Sun.COM> wrote:
> 
> > Hi,
> > 
> > I have submitted the following problem to the
> Maven
> > mailing list which 
> > redirected me to this Ant mailing list.
> > 
> > The problem occurs when I use the maven ant task
> > 2.0.4 with Ant 1.7.0.
> > The fileset created by the <maven:dependencies>
> task
> > raises a 
> > NullPointerException when used in the Ant
> > <pathconvert> task.
> > 
> > The following code :
> > 
> >         <!-- The Artifact to be looked for with
> the
> > maven dependencies 
> > task -->
> >         <property name="artifact.groupid"
> > value="junit"/>
> >         <property name="artifact.id"
> value="junit"/>
> >               
> >         <property name="artifact.version"
> > value="3.8.1"/>
> > 
> >        <!-- Try retrieving the artifact as a
> fileset
> > -->
> >         <maven:dependencies
> > filesetId="dependency.files">
> >             <dependency
> > groupId="${artifact.groupid}"
> >                 artifactId="${artifact.id}"
> >                 version="${artifact.version}"/>   
>  
> >              
> > </maven:dependencies>      
> >         <!-- The following does not fail, showing
> > that a fileset 
> > reference has
> >              actually been defined -->
> >         <fail message="Reference
> 'dependency.files'
> > has not been set or 
> > is not a fileset reference.">
> >             <condition>
> >                 <not><isreference
> > refid="dependency.files" 
> > type="fileset"/></not>
> >             </condition>
> >         </fail>
> >         <!-- But the following task throws a
> > NullPointerException -->
> >         <pathconvert
> > property="echo.dependency.files" 
> > refid="dependency.files"/>
> > 
> > Raises the following NullPointerException:
> > 
> > java.lang.NullPointerException
> >         at 
> >
>
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:115)
> >         at
> > org.apache.tools.ant.Task.perform(Task.java:348)
> >         at
> >
> org.apache.tools.ant.Target.execute(Target.java:357)
> >         at
> >
>
org.apache.tools.ant.Target.performTasks(Target.java:385)
> >         at 
> >
>
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
> >         at
> >
>
org.apache.tools.ant.Project.executeTarget(Project.java:1298)
> >         at 
> >
>
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
> >         at
> >
>
org.apache.tools.ant.Project.executeTargets(Project.java:1181)
> >         at
> > org.apache.tools.ant.Main.runBuild(Main.java:698)
> >         at
> > org.apache.tools.ant.Main.startAnt(Main.java:199)
> >         at
> >
>
org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
> >         at
> >
>
org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
> > Caused by: java.lang.NullPointerException
> >         at 
> >
>
org.apache.tools.ant.types.AbstractFileSet.setupDirectoryScanner(AbstractFileSet.java:464)
> >         at 
> >
>
org.apache.tools.ant.types.AbstractFileSet.getDirectoryScanner(AbstractFileSet.java:430)
> >         at
> >
>
org.apache.tools.ant.types.FileSet.iterator(FileSet.java:69)
> >         at 
> >
>
org.apache.tools.ant.types.resources.Union.getCollection(Union.java:105)
> >         at
> >
>
org.apache.tools.ant.types.resources.Union.list(Union.java:67)
> >         at 
> >
>
org.apache.tools.ant.taskdefs.PathConvert.execute(PathConvert.java:339)
> >         at 
> >
>
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
> >         at
> >
> sun.reflect.GeneratedMethodAccessor5.invoke(Unknown
> > Source)
> >         at 
> >
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >         at
> > java.lang.reflect.Method.invoke(Method.java:585)
> >         at 
> >
>
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
> >         ... 11 more
> > --- Nested Exception ---
> > java.lang.NullPointerException
> >         at 
> >
>
org.apache.tools.ant.types.AbstractFileSet.setupDirectoryScanner(AbstractFileSet.java:464)
> >         at 
> >
>
org.apache.tools.ant.types.AbstractFileSet.getDirectoryScanner(AbstractFileSet.java:430)
> >         at
> >
>
org.apache.tools.ant.types.FileSet.iterator(FileSet.java:69)
> >         at 
> >
>
org.apache.tools.ant.types.resources.Union.getCollection(Union.java:105)
> >         at
> >
>
org.apache.tools.ant.types.resources.Union.list(Union.java:67)
> >         at 
> >
>
org.apache.tools.ant.taskdefs.PathConvert.execute(PathConvert.java:339)
> >         at 
> >
>
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
> >         at
> >
> sun.reflect.GeneratedMethodAccessor5.invoke(Unknown
> > Source)
> >         at 
> >
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >         at
> > java.lang.reflect.Method.invoke(Method.java:585)
> >         at 
> >
>
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
> >         at
> > org.apache.tools.ant.Task.perform(Task.java:348)
> >         at
> >
> org.apache.tools.ant.Target.execute(Target.java:357)
> >         at
> >
>
org.apache.tools.ant.Target.performTasks(Target.java:385)
> >         at 
> >
>
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
> >         at
> >
>
org.apache.tools.ant.Project.executeTarget(Project.java:1298)
> >         at 
> >
>
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
> >         at
> >
>
org.apache.tools.ant.Project.executeTargets(Project.java:1181)
> >         at
> > org.apache.tools.ant.Main.runBuild(Main.java:698)
> >         at
> > org.apache.tools.ant.Main.startAnt(Main.java:199)
> >         at
> >
>
org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
> >         at
> >
>
org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
> > 
> > Any idea if this is an incompatibility introduced
> > with Ant 1.7.0 ?
> > 
> > Thanks
> > 
> >
>
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