Hi Christophe
This is what we have done. And its for more than just performance. It's also
about control (over the database), performance (we've implemented demand
loading) and portability.
The only major disadvantage I can see is you lose container caching. Which
is a big deal if you regularly have several clients accessing the same
entity instance at the same time, but otherwise isn't.
Obviously an email is too small to handle this but in outline:
Session bean as usual (stateless in our case and correspond 1:1 to our use
cases). Entities (christened Big Beans) are simply normal java classes
referenced by the session bean. (Even if I was using EJB Entitys I would
have the same session beans). All entities derive from AbstractEntity and
have a corresponding EntityPS class that handles persistence (and is in turn
derived from AbstractEntityPS). All but the most trivial relationships are
handle by an instance of a sub-class of AbstracyProxyList and has a
corresponding ProxyListPS class that persists the relationship. The proxy
lists handle the demand loading.
Hope this helps.
Edward
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]
Sent: 22 January 2001 14:10
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: [jBoss-User] HOWTO: Replacing Entity with Session bean and
manage the persistence
Hello,
I have heard several time that it is possible to replace the Entity Beans
with Session beans, why :
- for perfomce improvement !
So, I m searching for information about this !
More explaination about this principle, perfomance comparison, ...
What are the advantage of each, if there is some problem to have complex
structure, queries, ... with this solution !!
Thanks for all your help
Christophe
--
--------------------------------------------------------------
To subscribe: [EMAIL PROTECTED]
To unsubscribe: [EMAIL PROTECTED]
List Help?: [EMAIL PROTECTED]
--
--------------------------------------------------------------
To subscribe: [EMAIL PROTECTED]
To unsubscribe: [EMAIL PROTECTED]
List Help?: [EMAIL PROTECTED]
