Testing the integration between Siteminder and SharePoint successfully, i'm now trying to optimise the results of People Picker when searching users.
My question is: It is possible to create a custom filter to return only the users with a specific property value?
I'm using CA Directory.
The way people picker searches for user is using the claim provider and the claims which have been configured on the WSFED object on policy server.
OOB for sharepoint we create the legacy federation object. This I don't think supports expressions in attribute.
If we create a WSFED partnership federation object for SharePoint, there is an opportunity to use expression in attribute (claims being passed from SiteMinder). This may help here.