Re: External dirty transaction reads

On Wed, 2004-03-31 at 18:52, Tom Hazel wrote:
> Folks,
> 
> Need a little help. I know ozone recommends not using explicit
> transactions, but I have a case where I would like to use them.
> 
> I have searched the mailing list, google, and the code, but was unable
> to find a way to do dirty transaction reads (i.e. a non-blocking object
> read if someone has a transaction open on this object).

That's correct. Ozone has no feature where a transaction can access an
object when another transaction has a write-lock on it.
Firebird/Interbase has such a feature IIRC; a write-locked row could be
read by another transaction, and it could 'see' the unchaged (previous)
data.

> Is there a way in ozone to do something like this? Or has someone
> written an extension to do this?

Don't know, and no. I'm afraid it would be quite difficult to do it.

> And lastly. Has anyone written something that will time out transactions
> on the server side (user configurable), and/or has anyone done something
> that will abort a transaction if a client connection is broken?

Both 'no'. But these would probably be more easy than the combi
read-write stuff. Are you interested in implementing such features?

Cheers,
Leo

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