I have a stateless sessionBean defined using an interceptor on a businessMethod
as well as a entityBean with a listener.
| @Stateless
| @TransactionAttribute(TransactionAttributeType.REQUIRED)
| public class MyStatelessSessionBean {
| ...
| @Interceptors(MyInteceptor.class)
| public Object myPersistMethod(MyEntityObject myEntity) {
| ...
| // using an injected entityManager
| return entitymanger.merge(myEntity)
| ...
| }
| }
|
| public class MyInteceptor {
| @AroundInvoke
| public Object doInteception(InvocationContext context) throws Exception {
| try {
| System.out.println("before proceed");
| return context.proceed();
| } finally {
| System.out.println("after proceed");
| }
| }
|
| @Entity
| @EntityListeners(MyEntityListener.class)
| public class MyEntity {
| ...
| // some attributes / setters an getters ...
| ...
| }
|
| public class MyEntityListener {
| @PrePersist
| public void prePersit(Object entity) {
| System.out.println("prePersist entity");
| }
|
| @PreUpdate
| public void preUpdate(Object entity) {
| System.out.println("preUpdate entity");
| }
| }
|
|
calling the business-Method from a client twice with the same entity results in
different call-stacks:
| ======= CREATING THE ENTITY with myEntity =
service.myPersistMethod(myEntity) ==============
| INFO [STDOUT] before proceed
| INFO [STDOUT] prePersist entity
| INFO [STDOUT] after proceed
|
| ...
|
| ======= UPDATING THE ENTITY with myEntity =
service.myPersistMethod(myEntity) ==============
| INFO [STDOUT] before proceed
| INFO [STDOUT] after proceed
| INFO [STDOUT] preUpdate entity
|
|
the first output is as expected, but the second isn't what I was expecting,
because there is now way for the interceptor to get some information about
possible updates within the entity-callbacks ...
Is this behaviour anywhere defined ? Can I assume any calling order in
combination of Interceptors and callbackhandlers within a transaction - or is
it explicitly undefined ...
Thx for any help ---
wbr
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