Components composition

[marius.oancea]

I have an SFSB (also seam component) and I would like to split that component into many subcomponents.

Which is the best approach?


I have :

Component A
- Subcomponent A1
- Subcomponent A2

If all 3 are SFSB how can I access a method of A1 when a method of A is called ?

Is there any example where one action calls a method of another action ?

[gavin.king]

Just keep a ref to A1 inside A and call its method.

I mean, there is no magic you need to know here, it just works like ordinary Java!


Or, alternatively, have A1 injected into A using @In. Whatever you like. It Just Works.

[marius.oancea]

I understand what you mean but if I just keep a ref to A1 (and A1 is created with new) then the things into A1 will not be injected.



"A" has a method :

xxx() {
 a1 = new A1();
}

yyy() {
 a1.theMethod();
}

A1 has a method doPersistenceStuff

doPersistenceStuff() {
 // use em <--- is null because of course nobody injected it

}

How to make the statefull session bean A to get the reference to the statefull SB A1 that is correctly injected and so on?

[gavin.king]

Right, you should instantiate it using Component.getInstance(A1.class, true).

Or inject it.

[marius.oancea]

Ok. Thanx a lot