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Processing objects using Ma Client Server

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Processing objects using Ma Client Server

Hari
Hi All,


I'm struggling with trying to implement conditionality in Server processing. What I am doing now is:


myServer

                processOn: 12345

                using:
                        [ :requestObject |
                        [requestObject processThis] fork. responseObject ]


This allows processThis to happen and responseObject to come back.

What I'd like to do is:


myServer

                processOn: 12345

                using:

                        [ :requestObject |

                        [requestObject is MemberOf:A] ifTrue:[(requestObject instVarL)='somevalue' ifTrue:[ ResponseObject1 instVarA:(     (requestObject instVarL)  )      ].]

                        [requestObject is MemberOf:B] ifTrue:[(requestObject instVarT)='somevalue' ifTrue:[ ResponseObject2 doSomething:(requestObject)].]


]

I'd like to get a response without forking.... so that the responseObject is based on the conditionality and the value of one of its instance variables is based on some processing of an instance variable of the requestObject.


Is there something structurally wrong with what I am trying to do, i.e. introduce conditionality within the processOn method?


Kind regards,


Hari
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Re: Processing objects using Ma Client Server

Chris Muller-3
Hi Hari,

forking from your process block is not normal usage..

> What I'd like to do is:
>
>
> myServer
>
>                 processOn: 12345
>
>                 using:
>
>                         [ :requestObject |
>
>                         [requestObject is MemberOf:A] ifTrue:[(requestObject instVarL)='somevalue' ifTrue:[ ResponseObject1 instVarA:(     (requestObject instVarL)  )      ].]
>
>                         [requestObject is MemberOf:B] ifTrue:[(requestObject instVarT)='somevalue' ifTrue:[ ResponseObject2 doSomething:(requestObject)].]
>
>
> ]
>
> I'd like to get a response without forking....

The request-handling block above, needs to evaluate to the response
object, but the block above is written as:

    condition1 ifTrue: [ create1 ].
    condition2 ifTrue: [ create2 ]

create1 will *never* be returned.  It'll just create it and then move
on to test condition2.  Every time its false, it'll answer nil, which
is why your client doesn't get a response; because
returning nil is a way to have a request-only type of request (no response).

You can't use return carats, so you need to structure it as a single
expression like this:

   condition1
       ifTrue: [ create1 ]
       ifFalse:
         [ condition2
             ifTrue: [ create2 ]
             ifFalse: [ InvalidRequest signal ] ]

Best,
  Chris


> so that the responseObject is based on the conditionality and the value of one of its instance variables is based on some processing of an instance variable of the requestObject.
>
>
> Is there something structurally wrong with what I am trying to do, i.e. introduce conditionality within the processOn method?
>
>
> Kind regards,
>
>
> Hari
> _______________________________________________
> Magma mailing list
> [hidden email]
> http://lists.squeakfoundation.org/mailman/listinfo/magma
_______________________________________________
Magma mailing list
[hidden email]
http://lists.squeakfoundation.org/mailman/listinfo/magma
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