Re: [cdi-dev] Support Request (and Conversation?) Scope in @Singleton @Startup @PostConstruct methods

Simply as that: as the EntityManager per spec doesn't implement Serializable. Also the EJB spec explicitely states it as well in Section 4.2: Thus an Extended EM doesn't need to be Serializable. If you build a feature based on the assumption that each EntityManager is Serializable, then it will result in non-portable behaviour. Well, in JPA-1 it would at least have been possible to implement a Serializable EM, but in JPA2 you are mostly out of luck. There are tons of indicators. As an example: how would you serialize an EntityManager which holds a pessimistic lock() on the database? ^^ LieGrue, strub ----- Original Message -----