After reading the EJB spec and playing around with EJBs for a few months,
I'm running into an issue and am wondering if anyone else has found a
solution:
I'm having difficulty determining how to get a FindByXXX method return a
collection of Remote Interface references to multiple EJB types. The whole
goal is polymorphism-- how can I get a collection of remote interface
references, and when I call methods on the remote interface references, the
code which executes depends on the actual reference type.
One approach:
If my home interface is this:
public interface FooHome extends EJBHome {
public Foo create( ... ) throws ...
public Foo findByPrimaryKey( FooPK ) throws ...
public Enumeration findCollection( ... ) throws ...
}
And I have remote interfaces like this:
public interface Foo extends EJBObject {
public int doSomething( ) throws ...
}
public interface Bar1 extends Foo, EJBObject {
public int doSomething( ) throws ...
}
public interface Bar2 extends Foo, EJBObject {
public int doSomething( ) throws ...
}
How can I get the findCollection method to return an Enumeration of
references to possibly multiple EJB Remote Interfaces (including Bar1, Bar2,
etc.) all of which implement the Foo interface?
Thanks!
-Steve Roth, [EMAIL PROTECTED]
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