OSID - osid.voting.rules.BallotConstrainerRuleApplicationSession Service Interface Definition

Interface	osid.voting.rules.BallotConstrainerRuleApplicationSession
Implements	`osid.OsidSession`
Description	This session provides methods to apply `BallotConstrainers` to `Ballots.` A `Ballot` with multiple `BallotConstrainers` means any positive rule evaluation across the constrainers result in an accessible `Ballot.`
Method	getPollsId
Description	Gets the `Polls` `Id` associated with this session.
Return	`osid.id.Id`		the `Polls Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getPolls
Description	Gets the `Polls` associated with this session.
Return	`osid.voting.Polls`		the polls
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canAssignBallotConstrainers
Description	Tests if this user can alter ballot constrainer/ballot mappings. 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 lookup operations to unauthorized users.
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	assignBallotConstrainerToBallot
Description	Adds an existing `BallotConstrainer` to a `Ballot.`
Parameters	`osid.id.Id`	`ballotConstrainerId`	the `Id` of the `BallotConstrainer`
Parameters	`osid.id.Id`	`ballotId`	the `Id` of the `Ballot`
Errors	ALREADY_EXISTS		`ballotConstrainerId` is already applied to `ballotId`
	NOT_FOUND		`ballotConstrainerId` or `ballotId` not found
	NULL_ARGUMENT		`ballotConstrainerId` or `ballotId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignBallotConstrainerFromBallot
Description	Removes a `BallotConstrainer` from a `Ballot.`
Parameters	`osid.id.Id`	`ballotConstrainerId`	the `Id` of the `BallotConstrainer`
Parameters	`osid.id.Id`	`ballotId`	the `Id` of the `Ballot`
Errors	NOT_FOUND		`ballotConstrainerId` or `ballotId` not found or `ballotConstrainerId` not applied to `ballotId`
	NULL_ARGUMENT		`ballotConstrainerId` or `ballotId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canSequenceBallotConstrainers
Description	Tests if this user can order `BallotConstrainers.` A return of true does not guarantee successful authorization. A return of false indicates that it is known sequencing operations will result in a `PERMISSION_DENIED.` This is intended as a hint to an application that may opt not to offer sequencing operations to an unauthorized user.
Return	`boolean`		`false` if `BallotConstrainer` ordering is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	moveBallotConstrainerAhead
Description	Reorders ballot constrainer for a ballot by moving the specified ballot constrainer in front of a reference ballot constrainer.
Parameters	`osid.id.Id`	`ballotConstrainerId`	the `Id` of a `BallotConstrainer`
	`osid.id.Id`	`ballotId`	the `Id` of a `Ballot`
	`osid.id.Id`	`referenceId`	the reference ballot constrainer `Id`
Errors	NOT_FOUND		`ballotConstrainerId, ballotId,` or `referenceId` not found or, `ballotConstrainerId` or `referenceId` not related to `ballotId`
	NULL_ARGUMENT		`ballotConstrainerId, ballotId,` or `referenceId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	moveBallotConstrainerBehind
Description	Reorders ballot constrainer for a ballot by moving the specified ballot constrainer behind a reference ballot constrainer.
Parameters	`osid.id.Id`	`ballotConstrainerId`	the `Id` of a `BallotConstrainer`
	`osid.id.Id`	`ballotId`	the `Id` of a `Ballot`
	`osid.id.Id`	`referenceId`	the reference ballot constrainer `Id`
Errors	NOT_FOUND		`ballotConstrainerId, ballotId,` or `referenceId` not found or, `ballotConstrainerId` or `referenceId` not related to `ballotId`
	NULL_ARGUMENT		`ballotConstrainerId, ballotId,` or `referenceId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	orderBallotConstrainers
Description	Reorders a set of ballot constrainers for a ballot
Parameters	`osid.id.Id[]`	`ballotConstrainerIds`	the `Ids` for a set of `BallotConstrainer`
Parameters	`osid.id.Id`	`ballotId`	the `Id` of a `Ballot`
Errors	NOT_FOUND		`ballotId` not found or, a `ballotConstrainerId` not related to `ballotId`
	NULL_ARGUMENT		`ballotConstrainerIds` or `ballotId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.