CODEWITHSUNDEEP
jakarta-eecdiejb-3.1
Kiva
Kiva

Reputation: 9353

Transaction management and CDI

I would like to develop an application with CDI (I use Spring usually) to discover this technology.

I have read many articles about CDI to learn how it works. I have a simple question about transaction management (for persistence in database for example):

Is it mandatory to use EJB 3.1 to have transaction management or is it possible to have it with CDI only ?

Thanks.

Upvotes: 5

Views: 9103

Answers (3)

Sergio
Sergio

Reputation: 3387

By the moment (until that Java EE 7 arrives) you could mix a CDI (No more @ManagedBean) with a EJB (transactional features) just like Adam Bien shows in his post:

@Stateless
@Named("helloService")
public class HelloService {

    @EJB ClockService clockService;

    public String getHello(){
        return "Hello from EJB / CDI: " + clockService.currentTime();
    }
}

Something good about this is that your EJB is exposed directly to the View Tier, no need of @Interceptor, but, don't abuse of this approach you could high coupling between View and Control tiers

From the JavaEE7 Spec: " Although CDI, JSF and EJB already all build on a common but very abstract concept called the managed bean, it seems that JSF Managed Beans might be dropped in favor of CDI and EJB might be retrofitted as a set of CDI services."

References:

  1. http://www.adam-bien.com/roller/abien/entry/ejb_3_1_killed_the

  2. http://jdevelopment.nl/open-source/java-ee-7-progress-page/

Upvotes: 2

sumit sharma
sumit sharma

Reputation: 1057

Transaction management is a different API so it does not matter weather you use it with CDI or EJB.

Upvotes: 2

LightGuard
LightGuard

Reputation: 5378

No, you can do it with CDI. You simply need to create an interceptor that starts, commits or rollsback a transaction. It's really not that hard. In Java EE 7 there will be a @Transactional for all managed beans (JSF, CDI, EJB, etc) that will be a CDI interceptor.

EDIT: If you'd like to take a look at some that are already done, Apache DeltaSpike and Seam 3 (no longer being developed) have interceptors to handle transactions.

Upvotes: 8

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