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
