As a user, I want the ability to search for metacards where an attribute is missing or has the value set to null so I can either correct or report them.
Description
As a user, I want the ability to search for metacards where an attribute is missing or has the value set to null so I can either correct or report them.
Acceptance Criteria
Implement the IS EMPTY operators such that they return the appropriate metacards in Intrigue.
IS EMPTY: Returns all metacards when the attribute itself does not exist, or if the attribute value is null
Environment
None
