Role based Searching

Hi Everyone,

Need some guidance on performing dashboard backend searches based on user role. Lets say I have one Host coming in with a field called Region, values: North America, South America & Europe. I have 3 roles: North America, South America and Europe.

Since I really don't want to reindex this large data set, is there a way in the search to specify if a user role = X then only show them Y?

Thanks!