Hi Ralf! It's good to know, that i was not blind or messed anything up. Thanks for your fast answer!
Cheers, Peter Ralf Joachim schrieb:
Hi Peter, I had a peek at ManyRelationResolver.load(), the place that is responsible to create objects for many relations. It seams your investigation is correct. When using lazy loading only Collections are supported by Castor at the moment. Regards Ralf Peter Schmidt schrieb:Hi Werner! What we are trying to do: We are working on a JPA support for Castor, so we create ClassDescriptors from JPA annotated Java classes. We are generating the ClassDescriptors in a similar way like the source generator does it and copied the behaviour. Now for One to many relations, we encounter the described problem. Debugging showed that the FieldMapping has the right collection type ("set"). But if lazy loading is used, castor tries to set the value to a RelationCollection - which is not a Set but a Collection. It is hard to provide more information... We will try to send you a testcase and patch soon. Maybe that will help. Kind regards Peter Werner Guttmann schrieb:Peter, Castor JDO does have support for lazy loading many realtions, and has been doing so for many years. As there's quite some test cases in the JDO CTF that test this feature, things should not be broken. In other words, it looks like the problem might e on your side. How about sharing details with us on what you are trying to do ? Regards Werner Peter Schmidt wrote:Hi! Does castor support other types than Collections when using lazy loading on many relations? Because as far as I can see the following happens: A org.castor.persist.proxy.RelationCollection is created to handle the lazy loading. That class implements Collection. When the FieldMolder then invokes the set method (which e.g. requires a Set or anything but a Collection), the invokation fails because of an illegal argument (collection instead of set). Did we get anything wrong or is this just not supported? Thanks in advance! Peter Here is the stacktrace for more info: org.exolab.castor.jdo.DataObjectAccessException: Type conversion error: could not set value of FieldMolder for org.castor.test.jug.Master.slaves of type org.castor.test.jug.Slave with value of type org.castor.persist.proxy.RelationCollection at org.exolab.castor.persist.FieldMolder.setValue(FieldMolder.java:390) at org.castor.persist.resolver.ManyRelationResolver.load(ManyRelationResolver.java:284) at org.exolab.castor.persist.ClassMolder.mold(ClassMolder.java:584) at org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:554) at org.exolab.castor.persist.LockEngine.load(LockEngine.java:343) at org.castor.persist.AbstractTransactionContext.load(AbstractTransactionContext.java:569) at org.castor.persist.AbstractTransactionContext.load(AbstractTransactionContext.java:432) at org.exolab.castor.jdo.engine.AbstractDatabaseImpl.load(AbstractDatabaseImpl.java:267) at org.exolab.castor.jdo.engine.AbstractDatabaseImpl.load(AbstractDatabaseImpl.java:225) at org.castor.spring.orm.CastorTemplate$1.doInCastor(CastorTemplate.java:230) at org.castor.spring.orm.CastorTemplate.execute(CastorTemplate.java:186) at org.castor.spring.orm.CastorTemplate.execute(CastorTemplate.java:164) at org.castor.spring.orm.CastorTemplate.load(CastorTemplate.java:228) at org.castor.test.jug.dao.MasterCastorDao.getMaster(MasterCastorDao.java:13) at org.castor.test.jug.dao.MasterSlaveCastorDaoTest.get(MasterSlaveCastorDaoTest.java:30) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.test.context.junit4.SpringTestMethod.invoke(SpringTestMethod.java:198) at org.springframework.test.context.junit4.SpringMethodRoadie.runTestMethod(SpringMethodRoadie.java:252) at org.springframework.test.context.junit4.SpringMethodRoadie$2.run(SpringMethodRoadie.java:194) at org.springframework.test.context.junit4.SpringMethodRoadie.runBeforesThenTestThenAfters(SpringMethodRoadie.java:235) at org.springframework.test.context.junit4.SpringMethodRoadie.runWithRepetitions(SpringMethodRoadie.java:218) at org.springframework.test.context.junit4.SpringMethodRoadie.runTest(SpringMethodRoadie.java:192) at org.springframework.test.context.junit4.SpringMethodRoadie.run(SpringMethodRoadie.java:140) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.invokeTestMethod(SpringJUnit4ClassRunner.java:151) at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51) at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37) at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196) --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email--------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email--------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email
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