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Giovanni Azua · Guest

Hello all,

(CMP=Container Managed Persistence)

Are these statements bellow true?

1- Entity CMP can not be created pointing to several tables.
(I think this is not true I have seen example on the spec. EJB 2.0
page 157)

2-. CMP can not be used to create readonly EJB that are mapped to
a Database View in a Relational Database.
(I was able to seamlessly create a one CMP mapped to a Database
View using JDeveloper 10g against and Oracle Database, the readonly
EJB can not tell, perhaps some configuration somewhere?).

3-. CMP is of no use for XML data.
(I think this is not true, I would say you could find a JDBC driver
for XML to access XML in a relational way, then you just use that
JDBC driver to point to your XML data from the ).

If all of these statements above are indeed not true I (we) have to be very
careful with published papers making their "case" i.e. "The Case for AOP in
J2EE".

Many thanks in advance,
Best Regards,
Giovanni