OSID - osid.rules.check.CheckEvaluationSession Service Interface Definition

Interface	osid.rules.check.CheckEvaluationSession
Implements	`osid.OsidSession`
Used By	`osid.rules.check.RulesCheckManager`
Used By	`osid.rules.check.RulesCheckProxyManager`
Description	This session provides methods to evaluate `Checks`. `Checks` are `OsidRules` that may require additional input in the form of a `CheckCondition` to be evaluated. A `CheckCondition` is acquired using `getCheckCondition()`. The `CheckConditionRecords` in the `CheckCondition` must be supplied for a successful evaluation. Knowledge of a specific check `Id` is also an agreement to the understanding of the required `CheckConditionRecords` as well as what is expected as a result. These record `Types` may be inspected in the `CheckConditionRecord` and `CheckResultRecord` respectively.
Method	getEngineId
Description	Gets the `Engine` `Id` associated with this session.
Return	`osid.id.Id`		the `Engine Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getEngine
Description	Gets the `Engine` associated with this session.
Return	`osid.rules.Engine`		the engine
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canEvaluateChecks
Description	Tests if this user can evaluate checks. 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 check evaluation is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	getCheckCondition
Description	Gets a `CheckCondition` for the given `Check`. The record `Types` in the `CheckCondition` are required for a successful evaluation.
Parameters	`osid.id.Id`	`checkId`	the `Id` of a `Check`
Return	`osid.rules.check.CheckCondition`		a check condition
Errors	NOT_FOUND		`checkId` is not found
	NULL_ARGUMENT		`checkId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure making request
Compliance	`mandatory`		This method must be implemented.
Method	evaluateCheckOnCondition
Description	Evaluates a check based on an input condition.
Parameters	`osid.id.Id`	`checkId`	the `Id` of a `Check`
Parameters	`osid.rules.check.CheckCondition`	`checkCondition`	a check condition
Return	`boolean`		result of the evaluation
Errors	NOT_FOUND		`checkId` is not found
	NULL_ARGUMENT		`checkId` or `checkCondition` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
	UNSUPPORTED		`checkCondition` did not otiginate from `getCheckCondition()`
Compliance	`mandatory`		This method must be implemented.