Philippe,
> > Can anybody explain to me what that entity bean's "reentrant" flag in the DD works
>like? What is the meaning of "reentrant=true"? For what do I need >
this?
> For the meaning of this flag, you can refer to EJB specs.
> But I can explain how JOnAS uses it:
> Entity beans may be accessed in transactions, or out transactions.
> Since JOnAS 2.2, transaction isolation is managed inside JOnAS. So, if
> 2 different transactions try to access the same bean (same PK),
> a serialization is done by the container. The flag "Reentrant" is not
> taken in account in that case.
> If a client try to access an entity bean with no transaction context,
> it will be blocked if a transaction is already running on it, or
> if the flag is "rentrant=false" and that another client (with no transaction)
> is already running this entity bean. On the contrary, if the flag has
> been set "Reentrant=true", 2 clients may run concurrently the same bean
> instance outside any transaction context. This can improve performance
> in case of multiple clients accessing beans for read only.
thank you for that tip. Now I understand this flag! :-)
