OSID - osid.Temporal Service Interface Definition

Interface	osid.Temporal
Implemented By	`osid.financials.Activity`
	`osid.OsidRelationship`
	`osid.OsidEnabler`
	`osid.room.construction.Renovation`
	`osid.room.construction.Project`
	`osid.offering.Result`
	`osid.voting.Ballot`
	`osid.calendaring.Event`
	`osid.personnel.Organization`
	`osid.personnel.Position`
	`osid.checklist.Todo`
	`osid.billing.Customer`
	`osid.billing.payment.Payer`
	`osid.room.Room`
	`osid.room.Floor`
	`osid.room.Building`
Description	`Temporal` is used to indicate the object endures for a period of time.
Method	isEffective
Description	Tests if the current date is within the start end end dates inclusive. The current date may be the real date or the supplied current date in the context of the running service. `Temporals` may be evaluated against other dates in which case it is possible that the `Temporal` is relevant at points in time where `isEffective()` is `false`.
Return	`boolean`	`true` if this is effective, `false` otherwise
Compliance	`mandatory`	This method must be implemented.
Method	getStartDate
Description	Gets the start date.
Return	`osid.calendaring.DateTime`	the start date
Compliance	`mandatory`	This method must be implemented.
Method	getEndDate
Description	Gets the end date.
Return	`osid.calendaring.DateTime`	the end date
Compliance	`mandatory`	This method must be implemented.