CMP in servlet and persistence, UserTransaction?

[alwyn]

Hi,

I am using CMP within a servlet. Commit option D is used. I also access the Bean via getPrimaryKey and not a finder.

Would the above be sufficient to ensure that the bean is cached? Or must I also use a UserTransaction?

[aloubyansky]

getPrimaryKey() primary key is handled by client container and not fetching the value from the persistent context. So, the answer is no even for UserTransaction. You need to access some CMP or CMR field to load the data into the cache.

[alwyn]

Ok.

Do you need to access the CMP field as part as a UserTransaction to ensure
caching or is accessing it enough?

Thanx

[aloubyansky]

Just invoking a get method of a CMP or CMR field would be enough. Assuming standard container with CO A or D.