Creating an implicit loop - retry a failed step

[Mark Pyc]

G'day,

Unless I misunderstand Kjetil, you are suggesting to trigger another
WF instance. You right that this would avoid the loop, but Paul you
would really want to consider the costs of this choice - more
workitems, more logs, etc.

Unfortunately it's the easy stuff that seems most cumbersome in SAP
WF. The treat of it is that the graphical editor allows
non-programmers to develop controlled processes, the downside is that
you have to work within the limited tool set. If you want to loop, you
need a loop even if it means unsightly container ops.

Have fun,
Mark


On Mon, 14 Mar 2005 08:57:28 +0100, Kjetil Kilhavn <kjetilk at statoil.com> wrote:
> 
> If you absolutely want to avoid having a loop you can use a start event and
> create that when the user wants to retry.
> I suppose that's possible on most versions, at least it is on 46C and I
> believe it was on 31H
> --
> Kjetil Kilhavn
> 
> |--------+----------------------------------->
> |        |          Paul.Bakker at osr.treasury.|
> |        |          qld.gov.au               |
> |        |          Sent by:                 |
> |        |          sap-wug-bounces at mit.edu  |
> |        |                                   |
> |        |                                   |
> |        |          14.03.2005 00:24         |
> |        |          Please respond to "SAP   |
> |        |          Workflow Users' Group"   |
> |        |                                   |
> |--------+----------------------------------->
>  >-----------------------------------------------------------------------------------------------------------|
>  |                                                                                                           |
>  |       To:     sap-wug at mit.edu                                                                             |
>  |       cc:     (bcc: Kjetil Kilhavn)                                                                       |
>  |       Subject:     Creating an implicit loop - retry a failed step                                        |
>  >-----------------------------------------------------------------------------------------------------------|
> 
> 
> WF'ers,
> 
> Hi, here's my dumb question for the morning.
> 
> I am trying to set up a very simple workflow that has the following
> (partial) logic:
> 
> 1. Change document (background step)
>      2. If 'Change Document' failed, ask user if they want to retry (user
> decision)
>                  3. If the user chose 'Retry', go back to step 1
>            4. If the user chose 'Exit', finish the workflow
>      5. If 'Change Document' succeeded, finish the workflow
> 
> Simple, no? But when setting it up in the graphical editor,
> I cannot work out how to make step 3's 'retry' outcome point back
> to step 1. I thought you could just grab & drag the arrow, but it
> refuses to budge.
> 
> Is it even possible to set up a workflow this way, or do you have
> to make an explicit loop? That is more work (adding an UNTIL
> loop, new workflow container element, container operation steps etc..)
> and it 'clutters' the workflow. I'd rather have an implicit loop.
> 
> Any tips?
> 
> thanks,
> Paul
> 
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