Re: EntityProxy injection with Guice - Guice-persist
Ok, thx I figured it out... First I needed to inject a ServiceLayerDecorator to with Guice like this example project https://github.com/mgenov/injecting-request-factory And indeed, the EntityManager must be passed as ProviderEntityManager otherwise it is not ThreadLocal and you run into closed EntityManager exception (because the trheads make concurrent use of the EntityManager). I got it working. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/uJznvJq9RykJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
EntityProxy injection with Guice - Guice-persist
Hi
Starting up a new project using *RF* and *guice-persist* on the server-side
to start JPA and provide transaction management.
I have a couple of tests going to inject the EntityManager into the services
via the ServiceLocator :
public class *ApplicationServiceLocator* implements ServiceLocator {
Injector injector = null;
public ApplicationServiceLocator() {
injector = Guice.createInjector(new JpaPersistModule(Test));
injector.getInstance(ApplicationInitializer.class);
}
@Override
public Object getInstance(Class? clazz) {
*return injector.getInstance(clazz);*
}
}
This makes sure that is EntityManager injected into the service layers :
public class *WorkerServiceImpl* {
*@Inject*
*private EntityManager em;*
@Transactional
public ListContract getContracts(User user) {
*// I can us EntityManager now !! Injected because created this
WorkerServiceImpl
was created via injector.getInstance
* }
My question : what would be a good approach to inject the EntityManager into
an entity class when implementing a service in an entity class ?
What hooks do I have available to do so ?
thx
Koen
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Re: EntityProxy injection with Guice - Guice-persist
*@Inject*
*private EntityManager em;*
Don't know how to answer your question, but here you should inject
ProviderEntityManager instead of EntityManager. The reason is that service
classes are stored like singletons, and hence you should inject a provider
as explained here
http://code.google.com/p/google-guice/wiki/JPA#Using_the_inside_transactions
On Fri, Sep 23, 2011 at 12:12 PM, koma k...@koma.be wrote:
Hi
Starting up a new project using *RF* and *guice-persist* on the
server-side to start JPA and provide transaction management.
I have a couple of tests going to inject the EntityManager into the
services via the ServiceLocator :
public class *ApplicationServiceLocator* implements ServiceLocator {
Injector injector = null;
public ApplicationServiceLocator() {
injector = Guice.createInjector(new JpaPersistModule(Test));
injector.getInstance(ApplicationInitializer.class);
}
@Override
public Object getInstance(Class? clazz) {
*return injector.getInstance(clazz);*
}
}
This makes sure that is EntityManager injected into the service layers :
public class *WorkerServiceImpl* {
*@Inject*
*private EntityManager em;*
@Transactional
public ListContract getContracts(User user) {
*// I can us EntityManager now !! Injected because created this
WorkerServiceImpl
was created via injector.getInstance
* }
My question : what would be a good approach to inject the EntityManager
into an entity class when implementing a service in an entity class ?
What hooks do I have available to do so ?
thx
Koen
--
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--
Magno Machado Paulo
http://blog.magnomachado.com.br
http://code.google.com/p/emballo/
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