Hi Chuck,
Are you using TOPLink (TL) for Java 2.0 or TOPLink for WebLogic? Are you utilizing
UnitOfWork (UOW) within your EntityBeans (EB) or just utilizing TL's Sessions?
I haven't been able to figure out how to set up my EB's to utilize UOW's (because EB's
are shared and by definition, UOW's are one per user).
I've tried to set up the UOW's encapsulated inside a SessionBean (SB) per client, but
don't know how to identify which Client is modifying the EB from the Server EB.
Any insight would be helpful.
Thanks,
Gary
On Wed, 8 Sep 1999 10:10:33 NZST, Chuck Zheng <[EMAIL PROTECTED]> wrote:
>I have evaluated TOPLink and JavaBlend and consider TOPLink is
>far superior on following accounts
>
>- less intrusive
>- flexibiity
>- CMP (anyone use TOPLink CMP EntityBean in large production now?)
>- all the goodies already mentioned in the list
>
>TOPLink's lazy instantiation can be improved as ackownledged by Object People.
> It is not serious anyway.
>
>My favourate TOPLink capability is that it manages relationship
>from a CMP EB to a dependent object, which has a relationship to another CMP
>EB, all without a single line of "relationship" code. Does anyone know any
>other tool can do this?
>
>When applying the pattern of Session Bean facade over Entity Beans, if (stateless)
>Session only receives EB's PK from client,
>then you have to call EBHome.findBYPrimaryKey() in Session Bean, as expected.
>
>
>cheers
>chuck
>
>
>>Rudi Vankeirsbilck wrote:
>>
>>I agree TOPLink does have some limitations, but they are relatively easy to
>live with. And, as has been pointed out before, some of them will disappear
>with JDK 1.2.
>>
>>We have evaluated a number of O-R mapping products and concluded that only
>TOPLink had all the features we needed. Flexible mapping strategies to allow
>mapping to a legacy database was one of them. We also found TOPLink was the
>least intrusive of the tools we looked at.
>>
>>As for maturity: I understand TOPLink Java is based on a TOPLink Smalltalk
>product that had already been used by the Object People for several years. The
>Java version GA'd in spring 1998 if I remember well, we have been using it since
>then. We _do_ think the product is mature enough.
>>
>>My favourite missing TOPLink feature: to be able to generate a TOPLink mapping
>layer from an XMI file (which in turn can be generated from Rational Rose and
>other modellers). I hope the Object People will jump on the XMI bandwagon soon...
>
>>
>>Regards, Luc Peerdeman.
>>
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