Filter

Filter - namespace for filter handling classes.

Class	Description
Type	Handles field types.
NumberType	Handles numeric fields.
DateType	Handles date field subtypes.
Theme	Handles themes.
DateTime	Handles dates.
Field	Class for filter field methods.
Actions	Class for filter action methods.
Options	Class for filter setting methods.
Quarter	Class calculates start and end quarter dates, by using quarter number