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From "Patrick Linskey" <plins...@bea.com>
Subject RE: Open JPA error-Could not locate metadata for the class using alias
Date Wed, 25 Apr 2007 07:51:21 GMT
Ok... the problem is that OpenJPA requires that you run the OpenJPA
class enhancer over your classes (or run in a container environment such
as an appserver or Spring, which can do class-load-time processing).

The other problem is that the error message is really bad, in that it
doesn't suggest that as a cause, and in that the message stringification
is deferred, causing the "Article=null" negative-cache misdirection.
I've changed the error message and toString() logic.

Meanwhile, I got the following when running the enhancer on your
classes:

<0.0.0 fatal user error> org.apache.openjpa.util.MetaDataException:
"nl.reinders.bm.generated.License.iLicensenr" declares generator name
"licensenr", but uses the AUTO generation type.  The only valid
generator names under AUTO are "uuid-hex" and "uuid-string". 

I changed the @GeneratedValue annotation to specify that it's using the
'GenerationType.TABLE' strategy, but then I ran into problems with
classes that had compound identity but didn't specify an @IdClass.

-Patrick

-- 
Patrick Linskey
BEA Systems, Inc.
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> -----Original Message-----
> From: tbee [mailto:tbee@tbee.org] 
> Sent: Wednesday, April 25, 2007 12:03 AM
> To: open-jpa-dev@incubator.apache.org
> Subject: RE: Open JPA error-Could not locate metadata for the 
> class using alias
> 
> 
> 
> 
> Patrick Linskey wrote:
> > 
> > I don't think that uploading to this mailing list works; 
> the easiest 
> > thing to do is to create a JIRA issue and attach the jar / 
> zip of the 
> > problem there. If you'd rather not create a JIRA account, 
> you can send 
> > the code to pcl at apache dot org, and I'll attach it to a 
> new issue 
> > for the group's perusal.
> > 
> 
> Alrighty then: OPENJPA-228
> 
> This is the BM archive with "@Entity extends @Entity" instead 
> of "@Entity extends @MappedSuperclass". But I do not believe 
> OpenJPA gets to that part, because that actually does not 
> make a difference.
> 
> --
> View this message in context: 
> http://www.nabble.com/Open-JPA-error-Could-not-locate-metadata
> -for-the-class-using-alias-tf3561516.html#a10175457
> Sent from the open-jpa-dev mailing list archive at Nabble.com.
> 
> 

Notice:  This email message, together with any attachments, may contain information  of  BEA
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 copyrighted  and/or legally privileged, and is intended solely for the use of the individual
or entity named in this message. If you are not the intended recipient, and have received
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