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author's profile photo Minh Tri Le
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Minh Tri Le

SCP Workflow API - filter by custom attribute for multiple workflow definitions

Posted on Jul 24, 2020 at 12:59 AM 65 Views

Hi,

I have 2 workflows A and B. And in workflow A, I assign a custom attribute EmployeeNo.

I'm using workflow API on Neo to query workflow instances - /v1/workflow-instances

I need to get workflow instances of A and B, with filter custom attribute EmployeeNo which belongs to A, so the complete request would be 

/v1/workflow-instances?$top=1&$inlinecount=allpages&definitionId=A,B&attributes.EmployeeNo=123456789

I'm not sure how the API handles the attribute filter.

1. Does it know that EmployeeNo belongs to A, not B?

2. Does it have a same result like 2 separate calls like?

/v1/workflow-instances?$top=1&$inlinecount=allpages&definitionId=A&attributes.EmployeeNo=123456789
/v1/workflow-instances?$top=1&$inlinecount=allpages&definitionId=B

And another thing is should the value of attributes be enclosed by single quote?

Thanks.

Tri

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    author's profile photo Tobias Breyer
    Tobias Breyer
    Posted on Jul 24, 2020 at 10:26 AM
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    Hi Tri,

    the general logic of filters on different attributes is that they have to match all (AND logic), while multiple values for a single attribute are ORed. Your query is therefore:

    (match the custom attribute value) AND (come from either A OR B definition)

    So the first URL will rather have the same results as the second if B has no such employeeNo attribute, but not include results from your third one. You have to execute several calls and merge the results, if the attribute does not exist for both A and B.

    Only the usual URL escaping rules apply, so unless the value really contains single quotes, you do not specify them.

    Regards,

    Tobias

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