It’s possible to cause an endless loop in a SharePoint Designer workflow. A common implementation pattern like this causes the problem:
- Skep 'n workflow en assosieer met 'n lys.
- Dui daarop dat dit moet begin op die skep van nuwe items en werk van die bestaande items.
- A step in the workflow updates a field in "Current Item".
- Sedert die huidige item verander, die workflow begin opnuut.
Hierdie eindelose lus om te verhoed dat, implementeer 'n eenvoudige semafoor:
- Voeg 'n tuiste kolom (of kolom om die lys / biblioteek as jy nie die gebruik van inhoud tipes).
- Steek dit uit die wysig bladsy (maklik om te doen as 'n webwerf kolom via sy eienskappe, nie so maklik as 'n lys kolom).
- In die workflow, kyk om te sien of die waarde van die semafoor kolom leeg.
- As dit leeg is, sit dit op 'n nie-leë waarde en voort te gaan.
- Indien nie, is nie leeg, verlaat onmiddellik.
Dit kan 'n redelik genuanseerde oplossing te word, afhangende van die maatskappy se behoeftes en so meer, maar dit is 'n werkbare patroon wanneer ek dit nodig gehad het.
</einde>
Technorati Tags: SharePoint Workflow
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