Polymorphic classes in workflow?

[Alon Raskin]

Problem with NN (I haven't used it) as I am not sure I can see how it
will allow you to leverage polymorphism? You need to be able to declare
supertypes (or interfaces) to leverage polymorphism. Mike, have you
tried declaring a concrete superclass and using that in your binding? I
wonder if the problem lies in interfaces only?

Alon Raskin
e: araskin at 3i-consulting.com
p: +1 207 523 3489
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-----Original Message-----
From: sap-wug-bounces at mit.edu [mailto:sap-wug-bounces at mit.edu] On Behalf
Of Mike Pokraka
Sent: Wednesday, June 27, 2007 4:58 AM
To: SAP Workflow Users' Group
Subject: RE: Polymorphic classes in workflow?

...doubly frustrating because all the underlying technology allows it.
BTW, if you are going to try using NN on a system >620, could you let us
know if it works? It doesn't on 620 unless I do programmed bindings
which
kinda defeats the point of simplification.

Although... I think it may be possible to develop some kind of generic
programmed binding to do the job across various object types. But right
now time is not a close enough friend to embark on such projects.

Cheers,
Mike

On Tue, June 26, 2007 7:04 pm, Alon Raskin wrote:
> Seems like an unnecessary work around (but I will take it). If only
SAP
> allowed proper polymorphic behaviour....
>
> ________________________________
>
> From: sap-wug-bounces at mit.edu on behalf of Mike Pokraka
> Sent: Tue 6/26/2007 13:35
> To: SAP Workflow Users' Group
> Subject: RE: Polymorphic classes in workflow?
>
>
>
> There there, actually an answer to your problem may be at hand - you
can
> enable a type NN (Not Defined) as a container element type as of some
> service pack.
> This is supposed to work, though I still get no end of binding-related
> errors. In my case I'm trying to restrict things further than
IF_WORKFLOW,
> e.g. IF_WF_INVOICE with a number of associated classes for different
> purposes.
>
>
> On Tue, June 26, 2007 5:38 pm, Alon Raskin wrote:
>> here here.
>>
>> ________________________________
>>
>> From: sap-wug-bounces at mit.edu on behalf of Mike Pokraka
>> Sent: Tue 6/26/2007 11:21
>> To: sap-wug at mit.edu
>> Subject: Polymorphic classes in workflow?
>>
>>
>>
>> Hi Workflowers,
>>
>> A very technical question: Has anyone tried to use some sort of
>> polymorphism with ABAP classes in workflow?
>>
>> I am working on 620 at the moment and the trouble is that the WF
builder
>> doesn't let you specify an interface as a class container element
type.
>> I
>> have even tried to get it to work via inheritance (i.e. binding a
>> subtype
>> to it's supertype and vice versa) and having spent most of a day on
it
>> have had no success whatsoever. It seems that the class you define is
>> the
>> class you're stuck with thoughout the WF.
>>
>> This is rather annoying and negates one of the more useful benefits
of
>> using classes. Even though I am sitting on a 620 system, I would also
be
>> interested in any experience on NW04/s because it would be handy to
know
>> how things work and which direction things will go as we also have
>> upgrade
>> plans around the corner.
>>
>> Any input appreciated.
>> Cheers,
>> Mike
>>
>>
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>
>
> --
> Mike Pokraka
> Senior Consultant
> Workflow Connections
> Mobile: +44(0)7786 910855
>
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>
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-- 
Mike Pokraka
Senior Consultant
Workflow Connections
Mobile: +44(0)7786 910855

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