Karn Kallio wrote:
Adam, now that somebody ( Marc Weber ) is working on an application ( payment gateway ) where the transaction model of Ur/Web does not cleanly apply, is there a chance of you generalizing Ur/Web transactions in a safe, principled way ( that allows representing the semantics of the application's effectful operations within Ur/Web )? For example, I think that the problem of leaving a permanent record of an event ( e.g. receiving an order and not removing it on failure rollback ) could be handled with a SAGA that has a null compensation for the process of writing the record.
It seems like Marc and I have settled on a very straightforward and not-ugly way of implementing what he wants, so this case doesn't seem to me like a good impetus to add a new fancy feature. I'm perfectly happy to help you figure out how to implement it yourself, if you want. :-)
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