Sequence numbering problem... solved.

[Igor Stasenko]

2008/11/22 Chris Muller <asqueaker at gmail.com>:
> Thanks for the report Göran.  Good debugging, another option would be
> to employ a ReadStrategy to ensure the UUID is dereferenced in the
> original server call.
>
> This never came up because serverPerform: was added solely for this
> purpose (sequence # generators), and a proxy would never be part of
> any of the other requests.  Still, you've piqued my curiousity whether
> Magma could make this invisible for you.
>

I think its quite possible, since you anyways need to serialize
requests to server - if you discover a proxy, you can reify it , or
maybe just serialize its ID without need in reifying it on client
side, which is much faster.

> Regards,
>  Chris
>
> On Tue, Nov 18, 2008 at 4:26 PM, Göran Krampe <goran at krampe.se> wrote:
>> Hi!
>>
>> As Chris knows we need sequence numbers in Gjallar. Chris implemented
>> #serverPerform:withArguments: but I admit being slightly stumped with it.
>>
>> I think the idea is that you add methods to MagmaRepositoryController like
>> for example:
>>
>> q2CounterInitialize: anId
>>        | sess counter |
>>        counter := 0.
>>        sess := self session.
>>        sess cacheAt: anId put: counter.
>>        ^sess commit: [ sess root environment at: anId put: counter ]
>>
>> q2CounterNext: anId
>>        | sess |
>>        sess := self session.
>>        ^sess commit: [ sess root environment at: anId put: (sess root
>> environment at: anId) + 1]
>>
>> q2CounterValue: anId
>>        | sess |
>>        sess := self session.
>>        ^sess commit: [ sess root environment at: anId ]
>>
>>
>> ...and then we call them, right? Soo... today I ended up getting errors
>> about serialization:
>>
>> "MaMalformedRequestError: No createProxyBlock specified.  See
>> MaObjectSerializer>>toCreateProxies:"
>>
>> Aha... I think I realized this now - the id above is a UUID but we are
>> sending a MaMutatingProxy instead. So I added just a little call like "{id
>> yourself}" to make sure it gets faulted - and then it seems to work.
>>
>> regards, Göran
>>
>> _______________________________________________
>> Magma mailing list
>> Magma at lists.squeakfoundation.org
>> http://lists.squeakfoundation.org/mailman/listinfo/magma
>>
>
> _______________________________________________
> Magma mailing list
> Magma at lists.squeakfoundation.org
> http://lists.squeakfoundation.org/mailman/listinfo/magma
>
>



-- 
Best regards,
Igor Stasenko AKA sig.