That explains it. This is my first experience with an ORM so I've a lot
to learn but it appears that FK objects related to a particular object I
select will also be available automagically much as in J2EE which I've
played with a bit as well. Neat. No need to respond since I'll dig this
out of the manual and thru more tests.
Much to learn (and that's the fun part of it:-).
Thanx Much,
Garth
On 11/01/2012 01:37 AM, Andrus Adamchik wrote:
PK and FK columns are intentionally not mapped as ObjAttributes. An FK is
redundant (you already have a mapped relationship for that), and PK is presumed
to be of no consequence in the object model, so it is hidden inside ObjectId of
each persistent object. For meaningful PKs, you can create ObjAttributes
yourself. And if you need to read a value of a hidden PK, use
org.apache.cayenne.Cayenne utility class.
Andrus
On Oct 31, 2012, at 1:52 AM, Garth Keesler <[email protected]> wrote:
Very new at Cayenne. Trying to extract the DBEntities and OBJEntities from a PG
database as shown in the tutorial. All tables in the selected schema are
extracted but the resultant DB and OBJ entities don't match each other WRT the
number of attributes. I'm still looking for a pattern but it seems that the
DBEntities match the schema while the OBJEntities are typically missing at
least one attribute; sometimes several. I'm still RTFMing but any helpful
pointers would be appreciated.
Thanx,
Garth
