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Subject: RE: Issues using same domain classes in JPA and CXF/JAXB
Date: Sun, 13 Dec 2009 14:38:23 -0800
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Thread-Topic: Issues using same domain classes in JPA and CXF/JAXB
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From: "KARR, DAVID (ATTCINW)" <dk068x@att.com>
To: <users@openjpa.apache.org>

> -----Original Message-----
> From: Rick Curtis [mailto:curtisr7@gmail.com]
> Sent: Sunday, December 13, 2009 1:57 PM
> To: users@openjpa.apache.org
> Subject: Re: Issues using same domain classes in JPA and CXF/JAXB
>=20
> I'm going to suggest you spend a few more cycles on getting buildtime
> enhancement working as runtime enhanced classes has a number of known
> issues... Enough issues that we have disabled this support as the
> default behavior in trunk. HTH

Ok, I'll work on a detailed description of my build-time enhancement
problems.

In short, I find that it's unable to find the fields of my class.  It
throws "NoSuchFieldException" errors for the fields I specify in my
orm.xml, even though I have both the instance variable and public
getter/setter for the field.

>=20
> Thanks,
> Rick
>=20
> On Dec 13, 2009, at 3:53 PM, "KARR, DAVID (ATTCINW)" <dk068x@att.com>
> wrote:
>=20
> >> -----Original Message-----
> >> From: Rick Curtis [mailto:curtisr7@gmail.com]
> >> Sent: Sunday, December 13, 2009 10:50 AM
> >> To: users@openjpa.apache.org
> >> Subject: Re: Issues using same domain classes in JPA and CXF/JAXB
> >>
> >> Sorry I haven't followed this chain of emails, but what type of
> >> enhancement are you using?
> >
> > Well, presently I believe I'm just using "run-time" enhancement.  I
> > had
> > troubles with both "load-time" (javaagent) and "build-time"
> > enhancement
> > (enhancer task).  I'll eventually try to submit a ticket,
> particularly
> > for the problems I had with build-time enhancement.
> >
> >> On Dec 13, 2009, at 12:04 PM, "KARR, DAVID (ATTCINW)"
> >> <dk068x@att.com>
> >> wrote:
> >>
> >>>> -----Original Message-----
> >>>> From: Craig.Russell@Sun.COM [mailto:Craig.Russell@Sun.COM]
> >>>> Sent: Saturday, December 12, 2009 6:18 PM
> >>>> To: users@openjpa.apache.org
> >>>> Subject: Re: Issues using same domain classes in JPA and CXF/JAXB
> >>>>
> >>>> Hi KARR, DAVID,
> >>>>
> >>>> I'd say that not copying annotations over to enhanced classes is
a
> >>>> deficiency, if not a bug in OpenJPA.
> >>>>
> >>>> OpenJPA is not the only consumer of runtime annotations.
> >>>>
> >>>> Can you please file a JIRA for this issue?
> >>>
> >>> Done: <https://issues.apache.org/jira/browse/OPENJPA-1428>.
> >>>
> >>> In the meantime, I have a workaround using a generic method that
> >>> basically creates an instance of my class, then uses
> >>> "BeanUtils.copyProperties()" to copy over everything.  That object
> >>> then
> >>> serializes fine, because its class has the annotations.
> >>>
> >>>> On Dec 12, 2009, at 2:19 PM, KARR, DAVID (ATTCINW) wrote:
> >>>>
> >>>>> I'm building an app that retrieves data with OpenJPA and tries
to
> >>>>> serialize it in xml or json with CXF/JAXB.  I'm using
annotations
> >> on
> >>>>> the
> >>>>> domain class to specify both the logical JPA (not physical) and
> >> JAXB
> >>>>> behavior (with the physical JPA in XML config).  In theory I
> would
> >>>>> think
> >>>>> this should work, but in my first test I found that CXF didn't
> >>>>> serialize
> >>>>> the object that I retrieved from JPA.
> >>>>>
> >>>>> After some thinking, I thought to write some debug code that
> > prints
> >>>>> out
> >>>>> the runtime annotations on the class, both for the class of the
> >>>>> returned
> >>>>> instance, and the class that it's declared as.  What I found
> >>>>> (because I
> >>>>> realized I should have expected this) is that the runtime class
> >>>> didn't
> >>>>> have the required annotations that the declared class did.  When
> >> JPA
> >>>>> enhanced the classes, it didn't copy the annotations.
> >>>>>
> >>>>> My app currently doesn't use build-time enhancement or the
> >>>>> javaagent.  I
> >>>>> can't remember exactly what OpenJPA does in that situation.  I
> >> think
> >>>>> it's still enhancing the class, but on demand.
> >>>>>
> >>>>> Is this issue with non-copied annotations really an issue, or
> >> should
> >>>> I
> >>>>> look elsewhere for why CXF isn't serializing my data (I'm asking
> a
> >>>>> similar question on the CXF list)?
> >>>>
> >>>> Craig L Russell
> >>>> Architect, Sun Java Enterprise System http://db.apache.org/jdo
> >>>> 408 276-5638 mailto:Craig.Russell@sun.com
> >>>> P.S. A good JDO? O, Gasp!
> >>>