I did the same factory pattern for GS/J and have a goodie for that if anyone
wants it. We also have smart stubs that can fail over in the GS/J ORB...
-Chris
> -----Original Message-----
> From: Gene Chuang [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, July 13, 2000 1:13 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Resiliency: method level failover, who provides this
>
> Good call! WL 5.1 doesn't support this, and I had to hand-code a
> EJBHomeFactory that produced FailSafeHomes that wrapped EJBHome and
> provide
> transparent re-lookup in case of connection failure. This is definitely
> not
> a difficult concept and can easily be provided by the vendor, i.e.
> weblogic.ejbc generating FailSafeBeanImpl stubs...
>
> Maybe in WL 6.0???
>
> Gene
>
> -----Original Message-----
> From: A mailing list for Enterprise JavaBeans development
> [mailto:[EMAIL PROTECTED]]On Behalf Of Smith, Curt H.
> Sent: Thursday, July 13, 2000 8:35 AM
> To: [EMAIL PROTECTED]
> Subject: Resiliency: method level failover, who provides this
>
>
> Greetings,
>
> I'm still wrestling with a few high availability issue while trying to
> select an app server
> vendor.
>
> A remaining problem that the current front runner, WLE 5.1, hasn't
> provided
> a solution for
> or even a future date, is transparent method level fail over. This is a
> feature that's been
> available from a few Corba ORB vendors, like Inprise, Iona and perhaps
> others.
>
> The value of this feature to a resilient, clustered services back end is
> this:
>
> - Servlet or java client or ?? has a handle (Corba Stub or EJB handle) to
> a
> service
>
> - the client makes a method call on the stub/handle
>
> - The service or box that that handle is to, goes down
>
> - You don't want the application developer to have to catch and
> re-bind/lookup the home, object, stub
> and re-dispatch the method call, all inline code. The app server's code
> should catch system failure
> exceptions in the Stub/Handle and transparently re-bind and re-issue the
> method call.
>
> - This HA feature has been available from leading Corba vendors and should
> be built into a HA EJB/Corba
> app server architecture along with resilient clusters etc etc.
>
> What Appserver vendor has this feature out of the box?
>
> At present I'm providing this feature set by hacking the idl2java code
> generator and inserting my own
> Stub.java template that catches orb level exceptions and re-binds, but I
> don't want to own this after I
> port to a new vendor.. ;-(
>
> Thanks,
>
> curt
>
>
> Curt Smith
> Z-Tel
> email: [EMAIL PROTECTED]
> work: 404-237-1166 x182
> FAX: 404-237-1167
>
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