On 10 May 2006 at 16:51, Dmitry Yemanov wrote:

>> Dispatcher won't execute the backup call, but as before, route it to
>> the appropriate provider which will be determined from the SPB.
>
>SPB parsing does not belong to the Y-valve, IMO.

Right. SPB parsing belongs to the place where services are
implemented. Because we are talking about implementing part of
services (which are too global for single provider) in Y-valve, it
must parse SPB if has to.

>> The provider on the client side won't be able to do any backup or
>> gfix things - those are tasks for the engine providers.
>
>I don't like it. Why functions of the utility become something that
>the engine should handle?

Because utility are ODS-bound. And so do engines.

>> > as methods in the subsystem. Do you propose to add
>> > backup/restore/validate methods in the subsystem to?
>>
>> Yes, this is the proposal.
>
>I'm not sure I like it, sorry.

Then answer my question from previous letter: what version of
backup file must be produced on the server where more than one engine
provider handle databases with different ODS?

--
SY, Dimitry Sibiryakov.