replace @Stateless by @Stateful and it is that cdi scope is just a proxy in front of ejb proxy
Romain Manni-Bucau Twitter: @rmannibucau Blog: http://rmannibucau.wordpress.com/ LinkedIn: http://fr.linkedin.com/in/rmannibucau Github: https://github.com/rmannibucau 2014-08-26 17:54 GMT+02:00 Lars-Fredrik Smedberg <itsme...@gmail.com>: > Thanks for the answer. > > So to summarize the scoping rules from CDI apply and the concurrency > management from EJB apply when combining @Stateless and any of the > @NormalScopes... > > Regards > Lars-Fredrik > On 26 Aug 2014 16:50, "Romain Manni-Bucau" <rmannibu...@gmail.com> wrote: > >> Hi >> >> 2014-08-26 16:45 GMT+02:00 Lars-Fredrik Smedberg <itsme...@gmail.com>: >> > Hi >> > >> > I have a few questions on EJB, CDI and Concurrency when I read >> > http://tomee.apache.org/examples-trunk/access-timeout/README.html, I >> read >> > >> > - Concurrent access to a @Stateful bean is serialized by the container. >> > >> > I also understand that I can annotate the EJBs with any of the CDI-scopes >> > (in my case I'm interested in @RequestScoped, @SessionScoped and >> > @ApplicationScoped). >> > >> > Questions: >> > >> > 1. If I annotate the @Stateful bean with @RequestScoped I assume that I >> get >> > a separate bean instance for each call? Correct? >> >> yes >> >> > 2. If I annotate the @Stateful bean with @SessionScoped I assume that I >> per >> > sesion get a separate bean instance that allows concurrent calls withing >> > that particular session without wait? Correct? >> >> you get one instance by session and calls are serialized if needed to >> ensure thread safety >> >> > 3. If I annotate the @Stateful bean with @ApplicationScoped I assume >> that I >> > per application get one bean instance that allows concurrent calls >> without >> > wait? Correct? >> > >> >> same as before, thread safety is ensured >> >> > The reason I ask is that as far as I understand CDI does not have any >> > concurrency management but the EJB has. What will be the case when doing >> as >> > above? >> > >> > Please help me get some in-depth understanding on this. >> > >> >> for @AppScoped => look @javax.ejb.Singleton and @Lock which is surely >> better >> >> > Thanks >> > Lars-Fredrik Smedberg >> > >> > >> > >> > -- >> > Med vänlig hälsning / Best regards >> > >> > Lars-Fredrik Smedberg >> > >> > STATEMENT OF CONFIDENTIALITY: >> > The information contained in this electronic message and any >> > attachments to this message are intended for the exclusive use of the >> > address(es) and may contain confidential or privileged information. If >> > you are not the intended recipient, please notify Lars-Fredrik Smedberg >> > immediately at itsme...@gmail.com, and destroy all copies of this >> > message and any attachments. >>
