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

Interface	osid.voting.rules.BallotConstrainerQuerySession
Implements	`osid.OsidSession`
Implemented By	`osid.voting.rules.BallotConstrainerSearchSession`
Used By	`osid.voting.rules.VotingRulesManager`
Used By	`osid.voting.rules.VotingRulesProxyManager`
Description	This session provides methods for searching among `BallotConstrainer` objects. The search query is constructed using the `BallotConstrainerQuery`. This session defines views that offer differing behaviors for searching. federated polls view: searches include ballot constrainer in polls of which this polls is an ancestor in the polls hierarchy isolated polls view: searches are restricted to ballot constrainer in this polls Ballot constrainer may have a query record indicated by their respective record types. The query record is accessed via the `BallotConstrainerQuery`.
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	canSearchBallotConstrainers
Description	Tests if this user can perform `BallotConstrainer` lookups. A return of true does not guarantee successful authorization. A return of false indicates that it is known all methods in this session will result in a `PERMISSION_DENIED`. This is intended as a hint to an application that may not offer lookup operations to unauthorized users.
Return	`boolean`		`false` if search methods are not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	useFederatedPollsView
Description	Federates the view for methods in this session. A federated view will include ballot constrainer in polls which are children of this broker in the polls hierarchy.
Compliance	`mandatory`		This method is must be implemented.
Method	useIsolatedPollsView
Description	Isolates the view for methods in this session. An isolated view restricts lookups to this polls only.
Compliance	`mandatory`		This method is must be implemented.
Method	getBallotConstrainerQuery
Description	Gets a ballot constrainer query.
Return	`osid.voting.rules.BallotConstrainerQuery`		the ballot constrainer query
Compliance	`mandatory`		This method must be implemented.
Method	getBallotConstrainersByQuery
Description	Gets a list of `BallotConstrainers` matching the given ballot constrainer query.
Parameters	`osid.voting.rules.BallotConstrainerQuery`	`ballotConstrainerQuery`	the ballot constrainer query
Return	`osid.voting.rules.BallotConstrainerList`		the returned `BallotConstrainerList`
Errors	NULL_ARGUMENT		`ballotConstrainerQuery` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
	UNSUPPORTED		`ballotConstrainerQuery` is not of this service
Compliance	`mandatory`		This method must be implemented.