About Question enthuware.oce-ejbd.v6.2.550 :

[deadlock_gr]

Typo:

// valid cdoe

-->

// valid code

[admin]

Fixed.
Thanks for the feedback!

[gurpreet_asrgndu]

the explanation says :
A type level (aka class level) dependency cannot be injected in a variable.

but imo, it can be overriden (by using the same name) in the DD and an <injection-target> can be specified. so some of the information will be provided by annotations(mappedName, or lookup, type) and injection target will be specified in DD

[admin]

I am not sure I follow. Could you please give an example?

thank you,
Paul.

[himaiMinh]

A type level (aka class level) dependency cannot be injected in a variable.
but imo, it can be overriden (by using the same name) in the DD and an <injection-target> can be specified. so some of the information will be provided by annotations(mappedName, or lookup, type) and injection target will be specified in DD

Let me answer this question:
Declaring a resource in the class level is different from injecting a resource into an instance field.

Declaring a resource in the class level is creating an environment entry for the bean, but it does not inject the resource until the bean provider lookup by JNDI name (by InitialContext.lookup or SessionContext.lookup).

When a resource is declared at the class level like this question, a lookup is necessary.
When a resource is injected into an instance field, a lookup is not needed.