Wdrażam 2 EAR na JBoss AS 7.1.0.Alpha1-SNAPSHOT (wersja 7.0.1.Final). Oba wdrażają dobrze.Wyjątek ClassCastException podczas rzucania wyeksponowanego widoku EJB w AS7
Mam klasy EJB Singleton pakowane w słoik, w jednym z uszu:
@Startup
@Singleton
// one of @Local(Store.class), @Remote(Store.class), @LocalBean
@TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
@Transactional(TransactionPropagation.SUPPORTS)
public class StoreFront implements Store {
...
public interface Store {
...
Gdy instaluje, to mówi EJB jest zobowiązany do:
"java:app/store-core-2011.1.2-SNAPSHOT/StoreFront"
"java:app/store-core-2011.1.2-SNAPSHOT/StoreFront!uk.co.magus.jam.store.core.Store"
"java:module/StoreFront"
"java:module/StoreFront!uk.co.magus.jam.store.core.Store"
"java:global/store-ear-2011.1.2-SNAPSHOT/store-core-2011.1.2-SNAPSHOT/StoreFront!uk.co.magus.jam.store.core.Store"
"java:global/store-ear-2011.1.2-SNAPSHOT/store-core-2011.1.2-SNAPSHOT/StoreFront"
tej pory tak dobrze. Kiedy próbuję wyszukać za pośrednictwem JNDI z klasy innej niż CDI, nie należącej do EJB w obrębie pliku JAR w ramach INDZIEGO wdrożonego pliku EAR, można go znaleźć tylko w nazwach JNDI pod "globalnym" - ponownie, oczekiwano.
Jednak kiedy próbuję oddać obiekt wynikowy do rzeczywistej klasy interfejs:
Object lookupObject = new InitialContext().lookup(jndiName);
Store store = (StoreFront)lookupObject;
otrzymuję następujący wyjątek:
11:17:52,402 ERROR [jam.core.link.LinkListener] (Thread-45) Exception when casting to Store after lookup with [java:global/store-ear-2011.1.2-SNAPSHOT/store-core-2011.1.2-SNAPSHOT/StoreFront]: java.lang.ClassCastException: jam.store.core.Store$$$view1 cannot be cast to jam.store.core.Store
at jam.core.link.LinkListener.getStore(LinkListener.java:108) [core-jar-2011.1.2-SNAPSHOT.jar:]
at jam.core.link.LinkListener.postLoad(LinkListener.java:27) [core-jar-2011.1.2-SNAPSHOT.jar:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_07]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_07]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_07]
at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_07]
at org.hibernate.ejb.event.ListenerCallback.invoke(ListenerCallback.java:48)
at org.hibernate.ejb.event.EntityCallbackHandler.callback(EntityCallbackHandler.java:96)
at org.hibernate.ejb.event.EntityCallbackHandler.postLoad(EntityCallbackHandler.java:89)
at org.hibernate.ejb.event.EJB3PostLoadEventListener.onPostLoad(EJB3PostLoadEventListener.java:49)
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:264)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1012)
at org.hibernate.loader.Loader.doQuery(Loader.java:889)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2058)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:81)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:71)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3686)
at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:446)
at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:427)
at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:204)
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:251)
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:148)
at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:947)
at org.hibernate.internal.SessionImpl.get(SessionImpl.java:863)
at org.hibernate.internal.SessionImpl.get(SessionImpl.java:856)
at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:787)
at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:762)
at org.jboss.as.jpa.container.AbstractEntityManager.find(AbstractEntityManager.java:220) [jboss-as-jpa-7.1.0.Alpha1-SNAPSHOT.jar:7.1.0.Alpha1-SNAPSHOT]
at jam.core.dao.GenericDAO.findById(GenericDAO.java:87) [core-jar-2011.1.2-SNAPSHOT.jar:]
at harvest.service.HarvesterDAOUtil.loadLink(HarvesterDAOUtil.java:251) [harvest-sar-2011.1.2-SNAPSHOT.jar:]
at harvest.service.1779224926$Proxy$_$$_WeldSubclass.loadLink(1779224926$Proxy$_$$_WeldSubclass.java) [harvest-sar-2011.1.2-SNAPSHOT.jar:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_07]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_07]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_07]
at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_07]
at org.jboss.interceptor.proxy.SimpleInterceptionChain.invokeNextInterceptor(SimpleInterceptionChain.java:112) [jboss-interceptor-core-2.0.0.Alpha3.jar:2.0.0.Alpha3]
at org.jboss.interceptor.proxy.InterceptorInvocationContext.proceed(InterceptorInvocationContext.java:119) [jboss-interceptor-core-2.0.0.Alpha3.jar:2.0.0.Alpha3]
at org.jboss.seam.transaction.TransactionInterceptor$1.work(TransactionInterceptor.java:194) [seam-persistence-3.0.0.Final.jar:]
at org.jboss.seam.transaction.Work.workInTransaction(Work.java:54) [seam-persistence-3.0.0.Final.jar:]
at org.jboss.seam.transaction.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:188) [seam-persistence-3.0.0.Final.jar:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_07]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_07]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_07]
at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_07]
at org.jboss.interceptor.proxy.InterceptorInvocation$InterceptorMethodInvocation.invoke(InterceptorInvocation.java:72) [jboss-interceptor-core-2.0.0.Alpha3.jar:2.0.0.Alpha3]
at org.jboss.interceptor.proxy.SimpleInterceptionChain.invokeNextInterceptor(SimpleInterceptionChain.java:82) [jboss-interceptor-core-2.0.0.Alpha3.jar:2.0.0.Alpha3]
at org.jboss.interceptor.proxy.InterceptorMethodHandler.executeInterception(InterceptorMethodHandler.java:133) [jboss-interceptor-core-2.0.0.Alpha3.jar:2.0.0.Alpha3]
at org.jboss.interceptor.proxy.InterceptorMethodHandler.invoke(InterceptorMethodHandler.java:112) [jboss-interceptor-core-2.0.0.Alpha3.jar:2.0.0.Alpha3]
at org.jboss.weld.bean.proxy.CombinedInterceptorAndDecoratorStackMethodHandler.invoke(CombinedInterceptorAndDecoratorStackMethodHandler.java:65) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
at harvest.service.1779224926$Proxy$_$$_WeldSubclass.loadLink(1779224926$Proxy$_$$_WeldSubclass.java) [harvest-sar-2011.1.2-SNAPSHOT.jar:]
at harvest.service.CombineHarvester.workOnLinkId(CombineHarvester.java:259) [harvest-sar-2011.1.2-SNAPSHOT.jar:]
at harvest.service.CombineHarvester.harvestCache(CombineHarvester.java:223) [harvest-sar-2011.1.2-SNAPSHOT.jar:]
at harvest.service.CombineHarvester.performHarvest(CombineHarvester.java:136) [harvest-sar-2011.1.2-SNAPSHOT.jar:]
at harvest.service.CombineHarvester.run(CombineHarvester.java:107) [harvest-sar-2011.1.2-SNAPSHOT.jar:]
at java.lang.Thread.run(Thread.java:619) [:1.6.0_07]
czy EJB jest opatrzone jednym z dowolnego
@Local(Store.class)
@Remote(Store.class)
@LocalBean
nie ma znaczenia. Jak rozumiem, fakt, że zwraca "widok" proxy, jest normalny. Jednak czy nie powinienem móc rzutować tego widoku na interfejs? Kombinacja tej globalnej nazwy JNDI, której używam, oraz tego, czy rzutuję na Store lub StoreFront, również wydaje się nie mieć żadnej różnicy - nie można rzucić tej kombinacji, nawet jeśli wyjątek jest taki jak jam.store.core.Store$$$view1 cannot be cast to jam.store.core.Store
, z pasującymi nazwami (podstawowymi)
Czy ktoś może wskazać, co robię źle?
Ahh, nie zdawałem sobie sprawy, że. Obecnie nie jest to opcja dla nas, ale świetny punkt. –