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

Interface	osid.voting.rules.BallotConstrainer
Implements	`osid.OsidConstrainer`
Description	A `BallotConstrainer` describes the rules for constraining the resources in a ballot.
Method	getBallotConstrainerRecord
Description	Gets the ballot constrainer record corresponding to the given `BallotConstrainer` record `Type.` This method is used to retrieve an object implementing the requested record. The `ballotConstrainerRecordType` may be the `Type` returned in `getRecordTypes()` or any of its parents in a `Type` hierarchy where `hasRecordType(ballotConstrainerRecordType)` is `true` .
Parameters	`osid.type.Type`	`ballotConstrainerRecordType`	the type of ballot constrainer record to retrieve
Return	`osid.voting.rules.records.BallotConstrainerRecord`		the ballot constrainer record
Errors	NULL_ARGUMENT		`ballotConstrainerRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	UNSUPPORTED		`hasRecordType(ballotConstrainerRecordType)` is `false`
Compliance	`mandatory`		This method must be implemented.