[jboss-dev-forums] [Design of JBoss ESB] - Re: Embedded FTP Server and FTP Clients

[bill.burke@jboss.com]

"mark.little at jboss.com" wrote : "bill.burke at jboss.com" wrote : Mark, this is what we've been arguing about privately over email.  JBPM provides support for long-term flows, and because the flow definition/metadata can either be persisted or travel with the message, federation would be supported.
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  | I'm pretty sure we've established that this is a good thing for us to support on the ESB.
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  | anonymous wrote : 
  |   | In my mind, even compensating transactions could be covered in the process flow definition.  You either rollback in a local transaction to your original save point in the message flow and start over, or you catch the problem and transition to the compensating part of the defined message flow.
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  | Until I see an implementation of a process engine that uses a transaction engine as its core for compensations, I'm not convinced that compensations are truly supported. Something like WS-BA (or one of the other dozen or so compensation transaction models) require durability, coordination and reliability characteristics that are often just ignored by process engines (both commercial and open source), leaving a lot up to the user.

Wasn't thinking about crash and recovery.  Still, don't compensations have to be more business process oriented usually anyways?  

Bill

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