(HFE) Home Business Methods -- Getting ref to EJB Obj

[Krishnan Y N]

Hi ,

In HFE book, in page 325, it says the client can get a reference to the EJB object by using a "home business method that returns a ref to the bean's component interface".

In page 346, in the section "What to put in a home business method" the writing says "don't return the bean's component interface (the way finders and create must)"

This is contradicting...Would like to know which one is correct..

TIA

[Giju George]

Hi Krishnan,
Even I picked up this !!!.
As per the spec (10.6.6.), the method argument and return value types must be legal types for RMI-IIOP .

So I think it can return a ref to component interface.

[Krishnan Y N]

Hi Giju,

Thx for the reply..Well i also did read the spec.. but then after reading the book.. was not so sure..

So should we say

"you can return a component interface from the business method but maybe that is not the best thing to do"

..

If we see a question that has a home business method returning a component interface, then i guess we should say it is valid piece of code ??

Cheerz
krish

[Joe Nguyen]

Could you explain why "it is not a best thing to do"?

[Philippe Maquet]

Hi all,

There is no real contradiction IMO: I'd say that even if you *can* return a reference to the component interface (or a Collection of) from a home business method, you *should not* because it doesn't make sense.

As a matter of fact, a home business method returning a reference to the component interface (or a Collection of)... simply would be a finder with a weird name.

But it's not just a question of naming convention:

With CMPs, *finders* don't need anything in the bean implementation class: not even an abstract declaration.

In comparison, achieving *exactly* the same functionality through a home business method would require:

to *implement* the ejbHomeXXX() method calling an ejbSelectXXX() method

to *declare* the corresponding abstract ejbSelectXXX() method

Regards,

Phil.