How do you map a reference to an interface-backed class? (non-trivial)

[Andrew Clute]

I have looked at all of the examples, I can't seem to make heads or 
tails of how to handle my situation. I want to map a class that has a 
reference to an object, that can one of many different objects, that 
all implement the same interface.

Example
Interface A{
}
class B implements A
{}
class C implements A
{}
class Z
{
        private A myA;
}
So, in this case, how do I map class Z since it's member variable is of 
Type A, but I want the concrete object, either of Type B or C to be 
filled in.

Seems like there is no known strategy to do this: "Using Interfaces 
With OJB" talks about a similar situation, but assumes that there is 
only one concrete class that can be instantiated for the reference (the 
factory-method assumes that it will only return one concrete class 
type).

Seems like I need a combination of the Interface mapping, and the 
'ojbConcreteClass' property to have the appropriate concrete class 
instantiated.

Thoughts? What am I missing?
-Andrew
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]