I'll be glad to submit an issue and I'll look at assembly:single. Thanks
for the response and suggestion. 

Brad

> -----Original Message-----
> From: John Casey [mailto:[EMAIL PROTECTED] 
> Sent: Friday, April 11, 2008 1:05 PM
> To: Maven Users List
> Subject: Re: assembly:assembly failure
> 
> Yeah, it looks like we need to improve the validation of 
> descriptors. None of the assembly mojos should really work 
> without an assembly id.
> 
> Would you mind filing an issue at:
> http://jira.codehaus.org/browse/MASSEMBLY? That way, you can 
> watch/vote for the issue, and see when it gets corrected.
> 
> Also, if you're binding the assembly plugin into your build 
> lifecycle for a project, you might want to consider using 
> assembly:single, since it doesn't force a forked execution of 
> the project's build. It will be a little more performant for 
> you most likely.
> 
> -john
> 
> On Fri, Apr 11, 2008 at 12:44 PM, Harper, Brad 
> <[EMAIL PROTECTED]>
> wrote:
> 
> > Ah, thanks.
> >
> > I've since found that "mvn assembly:attached" works, both from the 
> > command line and when run as part of a maven build 
> lifecycle [with the 
> > same assembly descriptor.]
> >
> > Is the assembly id being inferred or derived from the project then, 
> > when running the 'attached' goal?
> >
> > I suggest that the error message be improved for this use 
> case, at the 
> > least.  Since I've clearly not supplied an assembly id, it 
> seems that 
> > the message refers to multiple [internal] uses of the 
> assembly id and 
> > relates more to implementation of the plugin and less to something 
> > that the user has knowledge of [and can control].
> >
> > Thanks again.
> >
> > Brad
> >
> > > -----Original Message-----
> > > From: John Casey [mailto:[EMAIL PROTECTED]
> > > Sent: Friday, April 11, 2008 10:36 AM
> > > To: Maven Users List
> > > Subject: Re: assembly:assembly failure
> > >
> > > You need to specify <id>assembly-name</id> inside your assembly 
> > > descriptors.
> > >
> > > -john
> > >
> > > On Apr 10, 2008, at 8:34 AM, Harper, Brad wrote:
> > >
> > > > Anyone have thoughts on what's behind the following error?
> > > >
> > > >   ...
> > > >   [ERROR] BUILD FAILURE
> > > >   [INFO] ------------------
> > > >   [INFO] The assembly id null is used more than once.
> > > >   ...
> > > >
> > > > I see this error when testing a garden-variety assembly 
> from the 
> > > > command line
> > > >
> > > >   % mvn assembly:assembly 
> > > > -Ddescriptor=src/main/assembly/release.xml
> > > > -Ddocument.version=2.4.15
> > > >
> > > > The assembly descriptor names only two files: the project's war 
> > > > artifact and a document, which references the property 
> > > > ${document.version} to get the correct file.
> > > >
> > > > Brad Harper
> > > >
> > > >
> > > 
> --------------------------------------------------------------------
> > > -
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> > > >
> > >
> > > ---
> > > John Casey
> > > Committer and PMC Member, Apache Maven
> > > mail: jdcasey at commonjava dot org
> > > blog: http://www.ejlife.net/blogs/john
> > > rss: http://feeds.feedburner.com/ejlife/john
> > >
> > >
> > >
> >
> > 
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> > To unsubscribe, e-mail: [EMAIL PROTECTED]
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> >
> >
> 
> 
> --
> John Casey
> ---
> Maven Developer (http://maven.apache.org)
> ---
> Blog: http://www.ejlife.net/blogs/buildchimp
> 

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