Catalfano Anthony wrote:
>
> Is there a recommended pattern for locking an entity bean?
The pattern for CMP is: "choose an EJB server that allows configuration of
locking strategies - pessimistic or optimistic - such that your requirements
can be met".
If you are using BMP, use "select ... holdlock ..." or "select ... for update"
etc. depending on your database.
> A usage scenario might be something like the following: There is an 'Order'
> entity bean that has a collection of LineItems. There is a store that
> submits a monthly order to our site. The monthly order is updated by many
> different store personnel but we must ensure that only one user updates the
> Order at a time. I believe that locking is not addressed by the 2.0 spec.
>
> Thanks
>
> Anthony Catalfano
> Information Technology Analyst
> Deere & Company
> 309-748-5201
>
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