According to my reading, the parameters in an ejbCreate method must be "RMI
ready", meaning they are either primitives, arrays of RMI-ready objects,
implement java.io.Serializable, or implement java.rmi.Remote (for instance,
another EJB Remote interface).
I want an ejbCreate method which takes, among other things, an EJB Remote
interface as an argument (to set up a required association for an entity
bean). For example, a Division has a 1-to-many association with Policy. Then
in the ejbCreate for PolicyBean, I want to pass an instance of a Division,
along with the primary key data. For sheer object-oriented stubbornness I DO
NOT want to pass the Division's primary key to PolicyBean's ejbCreate... I
want to pass the Division itself. I want to leave it up to PolicyBean to
extract the primary key from the Division and store it as an instance
variable.
Not only can I not get this to work, but I cannot find any examples of
others doing this. It seems like all the examples I find either pass primary
key data or pass a primary key itself (for the associated object) to
ejbCreate when setting up an association. Yes, I could pass the primary key
of the desired associated object rather than the handle of the object
itself, and this works fine since the primary key implements Serializable.
But it seems so data-centric rather than object oriented. Why use EJBs in
the first place if I have to relegate myself to non-object oriented
techniques? For this particular purpose I don't care about the implied
callback to obtain the primary key to the associated class (which must then
be stored as an instance variable, and of course could have been passed
directly). I care that it seems like the callback SHOULD work and it
doesn't. My environment is VisualAge 3.02 EE.
Any helpful advice is appreciated.
Charles May, Programmer/Analyst
AFCO Credit Corp. - Pittsburgh Systems Group
A Mellon Financial Company
(The views represented in this message are my own, and do not necessarily
represent the views of my employer).
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