OSID - osid.hold.HoldOublietteAssignmentSession Service Interface Definition

Interface	osid.hold.HoldOublietteAssignmentSession
Implements	`osid.OsidSession`
Description	This session provides methods to re-assign `Holds` to `Oubliette` mappings. A `Hold` may appear in multiple `Oubliette` objects and removing the last reference to a `Hold` is the equivalent of deleting it. Each `Oubliette` may have its own authorizations governing who is allowed to operate on it. Adding a reference of a `Hold` to another `Oubliette` is not a copy operation (eg: does not change its `Id` ).
Method	canAssignHolds
Description	Tests if this user can alter hold/oubliette mappings. A return of true does not guarantee successful authorization. A return of false indicates that it is known issue 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 lookup operations to unauthorized users.
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	canAssignHoldsToOubliette
Description	Tests if this user can alter hold/oubliette mappings. A return of true does not guarantee successful authorization. A return of false indicates that it is known issue 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 lookup operations to unauthorized users.
Parameters	`osid.id.Id`	`oublietteId`	the `Id` of the `Oubliette`
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`oublietteId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableOublietteIds
Description	Gets a list of oubliettes including and under the given oubliette node in which any hold can be assigned.
Parameters	`osid.id.Id`	`oublietteId`	the `Id` of the `Oubliette`
Return	`osid.id.IdList`		list of assignable oubliette `Ids`
Errors	NULL_ARGUMENT		`oublietteId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableOublietteIdsForHold
Description	Gets a list of oubliettes including and under the given oubliette node in which a specific hold can be assigned.
Parameters	`osid.id.Id`	`oublietteId`	the `Id` of the `Oubliette`
Parameters	`osid.id.Id`	`holdId`	the `Id` of the `Hold`
Return	`osid.id.IdList`		list of assignable oubliette `Ids`
Errors	NULL_ARGUMENT		`oublietteId` or `holdId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	assignHoldToOubliette
Description	Adds an existing `Hold` to a `Oubliette.`
Parameters	`osid.id.Id`	`holdId`	the `Id` of the `Hold`
Parameters	`osid.id.Id`	`oublietteId`	the `Id` of the `Oubliette`
Errors	ALREADY_EXISTS		`holdId` is already assigned to `oublietteId`
	NOT_FOUND		`holdId` or `oublietteId` not found
	NULL_ARGUMENT		`holdId` or `oublietteId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignHoldFromOubliette
Description	Removes a `Hold` from a `Oubliette.`
Parameters	`osid.id.Id`	`holdId`	the `Id` of the `Hold`
Parameters	`osid.id.Id`	`oublietteId`	the `Id` of the `Oubliette`
Errors	NOT_FOUND		`holdId` or `oublietteId` not found or `holdId` not assigned to `oublietteId`
	NULL_ARGUMENT		`holdId` or `oublietteId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	reassignHoldToOubliette
Description	Moves a `Hold` from one `Oubliette` to another. Mappings to other `Oubliettes` are unaffected.
Parameters	`osid.id.Id`	`holdId`	the `Id` of the `Hold`
	`osid.id.Id`	`fromOublietteId`	the `Id` of the current `Oubliette`
	`osid.id.Id`	`toOublietteId`	the `Id` of the destination `Oubliette`
Errors	NOT_FOUND		`holdId, fromOublietteId,` or `toOublietteId` not found or `holdId` not mapped to `fromOublietteId`
	NULL_ARGUMENT		`holdId, fromOublietteId,` or `toOublietteId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.