rolandpeng wrote: > How do you resolve this problem? or If you use postgreSQL+Hibernate3,how do > you maintain your *.hbm.xml and entities?
I use Hibernate 3 with PostgreSQL via JPA (Hibernate EntityManager). I maintain my entity definitions by hand. I find generated solutions to generally be unsatisfactory. They don't tend to preserve my customizations for eager/lazy fetching, updatability, etc, nor my entity initialization changes. They don't generally handle domain types all that well, and they don't always pick the best type to map for a PostgreSQL field. They tend to clobber my documentation, too. They have a lot of trouble with things like NOT NULL fields that are set by a server-side trigger, so the client application *MUST* *NOT* set them on INSERT even though they're NOT NULL in the schema. Yet I have one problem that I have only been able to solve in exactly this way. It's easy to handle in a custom binding (set nullable=true, updatable=false) but binding generators just don't and can't have that kind of knowledge. Bindings generators are useful as a starting point, but unless your schema is really rather simple I'm not convinced about their long-term utility. -- Craig Ringer -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
