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

Interface	osid.voting.rules.BallotConstrainerEnablerPollsAssignmentSession
Implements	`osid.OsidSession`
Used By	`osid.voting.rules.VotingRulesManager`
Used By	`osid.voting.rules.VotingRulesProxyManager`
Description	This session provides methods to re-assign `BallotConstrainerEnabler` to `Polls` mappings. A `BallotConstrainerEnabler` may appear in multiple `Polls` objects and removing the last reference to a `BallotConstrainerEnabler` is the equivalent of deleting it. Each `Polls` may have its own authorizations governing who is allowed to operate on it. Adding a reference of a `BallotConstrainerEnabler` to another `Polls` is not a copy operation (eg: does not change its `Id`).
Method	canAssignBallotConstrainerEnablers
Description	Tests if this user can alter ballot constrainer enabler/polls 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	canAssignBallotConstrainerEnablersToPolls
Description	Tests if this user can alter ballot constrainer enabler/polls 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.
Parameters	`osid.id.Id`	`pollsId`	the `Id` of the `Polls`
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`pollsId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAssignablePollsIds
Description	Gets a list of polls including and under the given polls node in which any ballot constrainer enabler can be assigned.
Parameters	`osid.id.Id`	`pollsId`	the `Id` of the `Polls`
Return	`osid.id.IdList`		list of assignable polls `Ids`
Errors	NULL_ARGUMENT		`pollsId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getAssignablePollsIdsForBallotConstrainerEnabler
Description	Gets a list of polls including and under the given polls node in which a specific ballot constrainer enabler can be assigned.
Parameters	`osid.id.Id`	`pollsId`	the `Id` of the `Polls`
Parameters	`osid.id.Id`	`ballotConstrainerEnablerId`	the `Id` of the `BallotConstrainerEnabler`
Return	`osid.id.IdList`		list of assignable polls `Ids`
Errors	NULL_ARGUMENT		`pollsId` or `ballotConstrainerEnablerId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	assignBallotConstrainerEnablerToPolls
Description	Adds an existing `BallotConstrainerEnabler` to a `Polls`.
Parameters	`osid.id.Id`	`ballotConstrainerEnablerId`	the `Id` of the `BallotConstrainerEnabler`
Parameters	`osid.id.Id`	`pollsId`	the `Id` of the `Polls`
Errors	ALREADY_EXISTS		`ballotConstrainerEnablerId` is already assigned to `pollsId`
	NOT_FOUND		`ballotConstrainerEnablerId` or `pollsId` not found
	NULL_ARGUMENT		`ballotConstrainerEnablerId` or `pollsId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignBallotConstrainerEnablerFromPolls
Description	Removes a `BallotConstrainerEnabler` from a `Polls`.
Parameters	`osid.id.Id`	`ballotConstrainerEnablerId`	the `Id` of the `BallotConstrainerEnabler`
Parameters	`osid.id.Id`	`pollsId`	the `Id` of the `Polls`
Errors	NOT_FOUND		`ballotConstrainerEnablerId` or `pollsId` not found or `ballotConstrainerEnablerId` not assigned to `pollsId`
	NULL_ARGUMENT		`ballotConstrainerEnablerId` or `pollsId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	reassignBallotConstrainerEnablerToPolls
Description	Moves a `BallotConstrainerEnabler` from one `Polls` to another. Mappings to other `Polls` are unaffected.
Parameters	`osid.id.Id`	`ballotConstrainerEnablerId`	the `Id` of the `BallotConstrainerEnabler`
	`osid.id.Id`	`fromPollsId`	the `Id` of the current `Polls`
	`osid.id.Id`	`toPollsId`	the `Id` of the destination `Polls`
Errors	ALREADY_EXISTS		`ballotConstrainerEnablerId` already assigned to `toPollsId`
	NOT_FOUND		`ballotConstrainerEnablerId, fromPollsId`, or `toPollsId` not found or `ballotConstrainerEnablerId` not mapped to `fromPollsId`
	NULL_ARGUMENT		`BallotConstrainerEnablerId, fromPollsId`, or `toPollsId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.