Primary key is null in CMP ejbLoad()

Question

Using WebLogic 7.0 with Oracle 9i Lite.
We're logging the values of the CMP fields in ejbLoad(). All of the
CMP values look fine, except for the primary key value; it's always
null. This means that Foo.getKey() (the CMP field that returns the
primary key value) always returns null.
Foo.getPrimaryKey() works as expected.
This appears to be causing problems with CMR fields. The Collection
we get from a "many" CMR field is populated with the correct number of
elements, but if we try to remove one of them we're getting a "primary
key cannot be null" exception from the container.
Any insights?
Richard A. Steele
Paychex

Answer 1

Here's some more information:
We're able to successfully create entity beans; for example, we have beans OrganizationEJB
and BusinessSiteEJB. There's a one-to-many relationship from OrganizationEJB to
BusinessSiteEJB.
Because of database integrity constraints, when we create a BusinessSite, we have
to provide the Organization as a parameter to create(). This works fine--after calling
create(), I see the new BusinessSite in the database.
We can also do a findByPrimaryKey() on BusinessSite and retrieve the business site.
However, if I do a getBusinessSites() on Organization, I get back a Collection, but:
1. Sometimes it has just a single entry, even if we know there are multiple business
sites for this organization. Sometimes, it has the right number of entries, but
every one of them is identical.
2. The primary key of the entries in the Collection are all null. In other words,
if I do a getPrimaryKey() on the BusinessSite local interfaces in the collection,
I get back null.
3. If I try to delete any of the Business Sites in the collection, the container
throws an exception that the primary key can't be null.
Richard A. Steele
Paychex