Daniel OConnor wrote:
> On 8 May 01, at 10:37, Richard Monson-Haefel wrote:
>
> > The specification should require that Local interfaces use only the
> > "Supports" transaction attribute. The Supports Tx attribute simply
> > propagates the callers (always another bean for local calls)
> > transaction. This eliminates the overhead of intercepting the call for
> > the purpose of evaluating the Tx context according to the Tx attribute.
>
> Hi Richard,
>
> I'm in favor of eliminating overhead from the container's checking of
> transaction and security contexts, but I don't think "Supports" is
> appropriate for EJB 2.0 CMP entity beans with local component
> interfaces. These must always execute within a transaction (see
> e.g. EJB 2.0 PFD2 17.4.1), which "Supports" would not ensure.
>
You are absolutely correct. I'll change my proposal to "Mandatory". This then
requires that there be some checking for context, which is fast and can be
avoided with pre-compiling, but it makes sense to require that a transaction be
present.
--
Richard Monson-Haefel
Author of Enterprise JavaBeans, 2nd Edition (O'Reilly 2000)
Co-Author of Java Message Service (O'Reilly 2000)
http://www.jMiddleware.com
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