OSID - osid.learning.ObjectiveRequisiteAssignmentSession Service Interface Definition

Interface	osid.learning.ObjectiveRequisiteAssignmentSession
Implements	`osid.OsidSession`
Description	This session provides methods to manage requisites. Each `ObjectiveBank` may have its own authorizations governing who is allowed to operate on it. Moving or adding a reference of an `Objective` to another `ObjectiveBank` is not a copy operation (eg: does not change its `Id` ).
Method	getObjectiveBankId
Description	Gets the `ObjectiveBank` `Id` associated with this session.
Return	`osid.id.Id`		the `ObjectiveBank Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getObjectiveBank
Description	Gets the `ObjectiveBank` associated with this session.
Return	`osid.learning.ObjectiveBank`		the `ObjectiveBank` associated with this session
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canAssignRequisites
Description	Tests if this user can manage objective requisites. A return of true does not guarantee successful authorization. A return of false indicates that it is known mapping methods in this session will result in a `PERMISSION_DENIED.` This is intended as a hint to an application that may opt not to offer assignment operations to unauthorized users.
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	assignObjectiveRequisite
Description	Creates a requirement dependency between two `Objectives.`
Parameters	`osid.id.Id`	`objectiveId`	the `Id` of the dependent `Objective`
Parameters	`osid.id.Id`	`requisiteObjectiveId`	the `Id` of the required `Objective`
Errors	ALREADY_EXISTS		`objectiveId` already mapped to `requisiteObjectiveId`
	NOT_FOUND		`objectiveId` or `requisiteObjectiveId` not found
	NULL_ARGUMENT		`objectiveId` or `requisiteObjectiveId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignObjectiveRequisite
Description	Removes an `Objective` requisite from an `Objective.`
Parameters	`osid.id.Id`	`objectiveId`	the `Id` of the `Objective`
Parameters	`osid.id.Id`	`requisiteObjectiveId`	the `Id` of the required `Objective`
Errors	NOT_FOUND		`objectiveId` or `requisiteObjectiveId` not found or `objectiveId` not mapped to `requisiteObjectiveId`
	NULL_ARGUMENT		`objectiveId` or `requisiteObjectiveId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	assignEquivalentObjective
Description	Makes an objective equivalent to another objective for the purposes of satisfying a requisite.
Parameters	`osid.id.Id`	`objectiveId`	the `Id` of the principal `Objective`
Parameters	`osid.id.Id`	`equivalentObjectiveId`	the `Id` of the equivalent `Objective`
Errors	ALREADY_EXISTS		`objectiveId` already mapped to `equiavelntObjectiveId`
	NOT_FOUND		`objectiveId` or `equivalentObjectiveId` not found
	NULL_ARGUMENT		`objectiveId` or `equivalentObjectiveId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignEquivalentObjective
Description	Removes an `Objective` requisite from an `Objective.`
Parameters	`osid.id.Id`	`objectiveId`	the `Id` of the principal `Objective`
Parameters	`osid.id.Id`	`equivalentObjectiveId`	the `Id` of the equivalent `Objective`
Errors	NOT_FOUND		`objectiveId` or `equivalentObjectiveId` not found or `objectiveId` is already equivalent to `equivalentObjectiveId`
	NULL_ARGUMENT		`objectiveId` or `equivalentObjectiveId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.