EJB LocalBean: Illegal non-business method access on no-interface view

Programação Java
#1

Srs, tenho uma classe EJB que herda uma outra generic assim:

[code]@Stateless
public abstract class AbstractJpaRepository<T, PK extends Serializable> {

protected EntityManager getEntityManager() {
    return entityManager;
}

public T findByPK(PK pk) {
    return getEntityManager().find(getPersistentClass(), pk);
}

public void delete(PK pk) {
    T entity = getEntityManager().getReference(getPersistentClass(), pk);
    delete(entity);
}

public void delete(T entity) {
    try {
        getEntityManager().remove(entity);
        getEntityManager().flush();
    } catch (PersistenceException e) {
        throw new PersistenceException(ExceptionConstants.MSG_FOREIGN_KEY);
    }
}

}[/code]

[code]@LocalBean
@Stateless
public class RateRepository
extends AbstractJpaRepository<Rate, Long> {

}[/code]

Quando uso o Glassfish em modo standalone funciona tudo bem. Porém quando eu faço deploy em cluster e chamo o método delete recebo a seguinte exception:

A system exception occurred during an invocation on EJB RateServiceBean method public void cob.model.service.RateServiceBean.delete(java.lang.Long) javax.ejb.EJBException: Illegal non-business method access on no-interface view at cob.model.repository.__EJB31_Generated__RateRepository__Intf____Bean__.getEntityManager(Unknown Source) at cob.model.repository.AbstractJpaRepository.delete(AbstractJpaRepository.java:143) at cob.model.service.RateServiceBean.delete(RateServiceBean.java:83) 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.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052) at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124) at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5363) at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619) at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88) at br.com.caelum.vraptor.interceptor.ExecuteMethodInterceptor.intercept(ExecuteMethodInterceptor.java:57) at br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:54) at br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:53)

Qual a diferença do método getEntityManager ser protected/public quando rodo em cluster? Se eu passo o método para public funciona. O mais estranho ainda é que há outros métodos que chamam o getEntityManager mas que não possuem esse problema. Apenas o método delete que dá esse erro.

#2