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From Kevin Sutter <kwsut...@gmail.com>
Subject Re: problem:entity could not be instantiated
Date Mon, 12 Apr 2010 16:10:05 GMT
Hi Michael,
Could you provide a bit more information on your domain model and
packaging?  Attaching your orm.xml would also be helpful.  From your
description it sounds like you have an entity listener defined in your
orm.xml.  Is your entity listener named
"com.wn.atmp.db.entity.device.WkstDeviceinfo"?  And, it sounds like this
"missing class" is not with the rest of your entities, but rather in a
separate jar referenced by your Manifest?

And, when you say this works okay with Hibernate JPA, you have plugged in
Hibernate JPA into WebSphere as an alternate JPA provider and everything
works as expected?  If that's the case, then at least it doesn't sound like
a classloader issue.

Thanks for your help,
Kevin

P.S.  Since you are a WebSphere customer, have you opened a PMR on this
problem yet?  No big deal if you haven't.  Just wondering if anybody within
WebSphere was already working this issue.

On Mon, Apr 12, 2010 at 4:11 AM, Lu, Shengyuan <shengyuan.lu@
wincor-nixdorf.com> wrote:

> Hi OpenJPA users,
>
>  I have a strange problem about orm.xml configuration, I think only
> professional OpenJPA guys can resolve it!
>  I use an orm.xml to register an entity-listeners, which is an entity
> listener when the entity is updated. The orm.xml is located in META-INFO
> beside persistence.xml.
>  It works fine in Hibernate JPA implementation, but fails on OpenJPA. The
> exception seems the system cannot find the model java and instantiate. The
> model java file is located on other jar which has been listed on
> MANIFEST.MF.
>
> Thanks in advance!
> Regards,
> Michael Lu
>
> Enviroment:
>  Jee Server: websphere 7.0
>  OpenJPA version: openjpa-1.2.1-SNAPSHOT-r422266
>
>  The exception:
>
>   com.wn.atmp.common.DataAccessException: Exception occurs in
> getSingleResult; base cause: <openjpa-1.2.1-SNAPSHOT-r422266:686069 nonfatal
> general error> org.apache.openjpa.persistence.PersistenceException:
> org.xml.sax.SAXException:
> wsjar:file:/D:/WebSphere7/AppServer/profiles/AppSrv01/installedApps/cnshw206Node01Cell/ATMP.ear/DBAccessor.jar!/META-INF/orm.xml
> [Location: Line: 5, C: 64]: Type
> "com.wn.atmp.db.entity.device.WkstDeviceinfo" could not be instantiated.
>
>         at
> com.wn.atmp.db.dao.impl.BaseDAO.getSingleResult(BaseDAO.java:193)
>
>         at com.wn.atmp.db.dao.impl.BaseDAO.getWorkstation(BaseDAO.java:167)
>
>         at
> com.wn.atmp.db.dao.impl.HierarchyDAO.findWkstById(HierarchyDAO.java:84)
>
>         at com.wn.atmp.test.testBean.sayHello(testBean.java:75)
>
>         at
> com.wn.atmp.test.EJSRemote0SLtestBean_6e6067fa.sayHello(EJSRemote0SLtestBean_6e6067fa.java)
>
>         at
> com.wn.atmp.test._EJSRemote0SLtestBean_6e6067fa_Tie.sayHello(_EJSRemote0SLtestBean_6e6067fa_Tie.java)
>
>         at
> com.wn.atmp.test._EJSRemote0SLtestBean_6e6067fa_Tie._invoke(_EJSRemote0SLtestBean_6e6067fa_Tie.java)
>
>         at
> com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDelegate.java:622)
>
>         at
> com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:475)
>
>         at com.ibm.rmi.iiop.ORB.process(ORB.java:504)
>
>         at com.ibm.CORBA.iiop.ORB.process(ORB.java:1571)
>
>         at com.ibm.rmi.iiop.Connection.respondTo(Connection.java:2771)
>
>         at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2640)
>
>         at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:63)
>
>         at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:118)
>
>         at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1527)
>
>  Caused by: <openjpa-1.2.1-SNAPSHOT-r422266:686069 nonfatal general error>
> org.apache.openjpa.persistence.PersistenceException:
> org.xml.sax.SAXException:
> wsjar:file:/D:/WebSphere7/AppServer/profiles/AppSrv01/installedApps/cnshw206Node01Cell/ATMP.ear/DBAccessor.jar!/META-INF/orm.xml
> [Location: Line: 5, C: 64]: Type
> "com.wn.atmp.db.entity.device.WkstDeviceinfo" could not be instantiated.
>
>         at
> org.apache.openjpa.persistence.PersistenceMetaDataFactory.parseXML(PersistenceMetaDataFactory.java:249)
>
>         at
> org.apache.openjpa.persistence.PersistenceMetaDataFactory.load(PersistenceMetaDataFactory.java:198)
>
>         at
> org.apache.openjpa.meta.MetaDataRepository.getMetaDataInternal(MetaDataRepository.java:474)
>
>         at
> org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepository.java:294)
>
>         at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getClassMetaData(JPQLExpressionBuilder.java:170)
>
>         at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.resolveClassMetaData(JPQLExpressionBuilder.java:139)
>
>         at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateMetaData(JPQLExpressionBuilder.java:225)
>
>         at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateMetaData(JPQLExpressionBuilder.java:195)
>
>         at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateType(JPQLExpressionBuilder.java:188)
>
>         at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.access$600(JPQLExpressionBuilder.java:69)
>
>         at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder$ParsedJPQL.populate(JPQLExpressionBuilder.java:1756)
>
>         at
> org.apache.openjpa.kernel.jpql.JPQLParser.populate(JPQLParser.java:56)
>
>         at
> org.apache.openjpa.kernel.ExpressionStoreQuery.populateFromCompilation(ExpressionStoreQuery.java:153)
>
>         at
> org.apache.openjpa.kernel.QueryImpl.newCompilation(QueryImpl.java:658)
>
>         at
> org.apache.openjpa.kernel.QueryImpl.compilationFromCache(QueryImpl.java:639)
>
>         at
> org.apache.openjpa.kernel.QueryImpl.compileForCompilation(QueryImpl.java:605)
>
>         at
> org.apache.openjpa.kernel.QueryImpl.compileForExecutor(QueryImpl.java:667)
>
>         at
> org.apache.openjpa.kernel.QueryImpl.getOperation(QueryImpl.java:1492)
>
>         at
> org.apache.openjpa.kernel.DelegatingQuery.getOperation(DelegatingQuery.java:123)
>
>         at
> org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:243)
>
>         at
> org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:293)
>
>         at
> com.wn.atmp.db.dao.impl.BaseDAO.getSingleResult(BaseDAO.java:188)
>
>         ... 15 more
>
>  Caused by: java.io.IOException: org.xml.sax.SAXException:
> wsjar:file:/D:/WebSphere7/AppServer/profiles/AppSrv01/installedApps/cnshw206Node01Cell/ATMP.ear/DBAccessor.jar!/META-INF/orm.xml
> [Location: Line: 5, C: 64]: Type
> "com.wn.atmp.db.entity.device.WkstDeviceinfo" could not be instantiated.
>
>         at
> org.apache.openjpa.lib.meta.XMLMetaDataParser.parseNewResource(XMLMetaDataParser.java:379)
>
>         at
> org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:318)
>
>         at
> org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:295)
>
>         at
> org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:268)
>
>         at
> org.apache.openjpa.persistence.PersistenceMetaDataFactory.parseXML(PersistenceMetaDataFactory.java:247)
>
>         ... 36 more
>
>  Caused by: org.xml.sax.SAXException:
> wsjar:file:/D:/WebSphere7/AppServer/profiles/AppSrv01/installedApps/cnshw206Node01Cell/ATMP.ear/DBAccessor.jar!/META-INF/orm.xml
> [Location: Line: 5, C: 64]: Type
> "com.wn.atmp.db.entity.device.WkstDeviceinfo" could not be instantiated.
>
>         at
> org.apache.openjpa.lib.meta.XMLMetaDataParser.getException(XMLMetaDataParser.java:656)
>
>         at
> org.apache.openjpa.lib.meta.CFMetaDataParser.classForName(CFMetaDataParser.java:287)
>
>         at
> org.apache.openjpa.persistence.XMLPersistenceMetaDataParser.classForName(XMLPersistenceMetaDataParser.java:1679)
>
>         at
> org.apache.openjpa.persistence.XMLPersistenceMetaDataParser.startClass(XMLPersistenceMetaDataParser.java:727)
>
>         at
> org.apache.openjpa.lib.meta.CFMetaDataParser.startElement(CFMetaDataParser.java:108)
>
>         at
> org.apache.openjpa.lib.meta.XMLMetaDataParser.startElement(XMLMetaDataParser.java:432)
>
>         at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
> Source)
>
>         at
> org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Source)
>
>         at
> org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown
> Source)
>
>         at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
> Source)
>
>         at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
> Source)
>
>         at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
> Source)
>
>         at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
> Source)
>
>         at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
>
>         at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown
> Source)
>
>         at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown
> Source)
>
>         at org.apache.xerces.jaxp.SAXParserImpl.parse(Unknown Source)
>
>         at
> org.apache.openjpa.lib.meta.XMLMetaDataParser.parseNewResource(XMLMetaDataParser.java:376)
>
>         ... 40 more
>
>
>
>

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