I am currently looking at using the WF3 rules engine within a WF4 workflow.
One of the business requirements we need to model is duplicate checking.
I am kind of new to rules engines/workflows so you may have to bear with me.
If I had a rule that involved finding duplicate invoices based on certain criteria how would I model that rule?
One of my concerns is how would the rules engine process the invoices to find if the duplicate rule applied especially in the case of large numbers of invoices?
Would I need write a custom expression?
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