57. The computer-implemented method as recited in claim 55 , wherein the operators include one or more arithmetic operators.
55. The computer-implemented method as recited in claim 53 , wherein a query expression includes: one or more attributes of a searchable data service object in the particular searchable index; and one or more operators to be applied to the one or more attributes in the query expression to locate a set of searchable data service objects that satisfy the query expression in the particular searchable index.