OSID - osid.sequencing.SequencingSession Service Interface Definition

Interface	osid.sequencing.SequencingSession
Implements	`osid.OsidSession`
Description	This session provides methods to sequence the elements in a `Chain.`
Method	getAntimatroidId
Description	Gets the `Antimatroid` `Id` associated with this session.
Return	`osid.id.Id`		the `Antimatroid Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getAntimatroid
Description	Gets the `Antimatroid` associated with this session.
Return	`osid.sequencing.Antimatroid`		the antimatroid
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canSequence
Description	Tests if this user can sequence things. A return of true does not guarantee successful authorization. A return of false indicates that it is known performing any update will result in a `PERMISSION_DENIED.` This is intended as a hint to an application that may opt not to offer these operations to an unauthorized user.
Return	`boolean`		`false` if sequencing is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	moveElementAhead
Description	Moves an element ahead of a reference element in a chain.
Parameters	`osid.id.Id`	`chainId`	the `Id` of the chain
	`osid.id.Id`	`referenceId`	the `Id` of the reference element
	`osid.id.Id`	`id`	the `Id` of the element to move ahead of `referenceId`
Errors	NOT_FOUND		`chainId, referenceId,` or `id` not found, or `referenceId` or `id` is not related to `chainId`
	NULL_ARGUMENT		`chainId, referenceId,` or `id` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	moveElementBehind
Description	Moves an element beind a reference element in a chain.
Parameters	`osid.id.Id`	`chainId`	the `Id` of the chain
	`osid.id.Id`	`referenceId`	the `Id` of the reference element
	`osid.id.Id`	`id`	the `Id` of the element to move behind of `referenceId`
Errors	NOT_FOUND		`parentId, referenceId,` or `id` not found, or `referenceId` or `id` is not a child of `parentId`
	NULL_ARGUMENT		`chainId, referenceId,` or `id` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	sequenceElements
Description	Sequences a set of elements in a chain.
Parameters	`osid.id.Id`	`chainId`	the `Id` of the chain
Parameters	`osid.id.Id[]`	`ids`	the `Id` of the elements
Errors	NOT_FOUND		`chainId` or an `id` not found, or an `id` is not related to `chainId`
	NULL_ARGUMENT		`chainId` or `ids` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.