1. A computer-implemented method, comprising: detecting a context event for a host item object; retrieving a host context for said host item object, wherein said host context comprises at least one object associated with said host item object; reading behavior information for said host item object from a catalog associated with said context event and said host context, said reading of behavior information responsive to said detection of said context event, said behavior information comprising behavior operations representing a set of operations performed for said host item object for said host context and behavior definitions for said host item object, said behavior definitions representing a custom service, a data source, and a user interface element for said host item object for said host context; translating said behavior information into object manager calls for multiple object managers; and performing operations for said host item object in accordance with said behavior information using said object manager calls.