CDI 2.0 new features

ModularityProvide sub specs in CDI (called parts) that can be used independently

Each part should have an implementation

Modularity - Why ?

We want to add new features to CDI without making it a bloated spec

Having parts will help CDI adoption. Third party won’t have to get the whole spec and impl if they don’t want to

Modularity - What parts ?

Right now we are thinking of 3 parts :

CDI Light : DI and events without normal scope and AOP

Providing lighter CDI implementations

Full CDI

Full CDI with Java EE / other spec integration

Modularity - challenges

Be sure of the parts - too much or not enough granularity

Having an RI and TCK for each part can be an important work

Java SE supportusing CDI outside Java EE

Java SE support - Why?

To provide a mean of building new stacks out of Java EE

To boost CDI adoption for Spec working already on Java SE

Java SE support - challengesExtract “Java EE” features across the spec to create a chapter dedicated to it

Decide what existing SE support we standardise

Add SPI for CDI integration with standard services:

JPA

Transaction

Security

Enhancing eventsMaking popular feature even more popular

Asynchronous Events

@InjectEvent<Payload> evt;

public void fireAsyncWithCallBack() { evt.fireAsync(new Payload(), callBack -> System.out.println("Job done”));}

Using lambdas to provide optional callback

Events Ordering

public void firstObserver(@Observes(1) Payload pl) {}

public void secondObserver(@Observes(2) Payload pl) {}

AOP enhancement

Support AOP on custom or produced bean

Improve interceptor chaining

Support Self Injection to call intercepted / decorated method from the same bean

SPI and contexts enhancement

Standardise CDI boot

Add helpers to create new metadata:

AnnotatedTypeBuilder

BeanBuilder

Add SPI to activate / deactivate contexts

CDI 2.0 needs you

CDI 2.0 specification is open to everyone

Come on join us on the mailing list and IRC channel

All infos on http://cdi-spec.org or by following to @cdispec on twitter

The more we are the more we’ll deliver

Questions ?