OSID - osid.offering.OfferingCatalogueAssignmentSession Service Interface Definition

Interface	osid.offering.OfferingCatalogueAssignmentSession
Implements	`osid.OsidSession`
Description	This session provides methods to re-assign `Offerings` to `Bilings.` An `Offering` may map to multiple `Catalogues` and removing the last reference to an `Offering` is the equivalent of deleting it. Each `Catalogue` may have its own authorizations governing who is allowed to operate on it. Adding a reference of an `Offering` to another `Catalogue` is not a copy operation (eg: does not change its `Id` ).
Method	canAssignOfferings
Description	Tests if this user can alter offering/catalogue 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	canAssignOfferingsToCatalogue
Description	Tests if this user can alter offering/catalogue 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 assignment operations to unauthorized users.
Parameters	`osid.id.Id`	`catalogueId`	the `Id` of the `Catalogue`
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`catalogueId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableCatalogueIds
Description	Gets a list of catalogues including and under the given catalogue node in which any offering can be assigned.
Parameters	`osid.id.Id`	`catalogueId`	the `Id` of the `Catalogue`
Return	`osid.id.IdList`		list of assignable catalogue `Ids`
Errors	NULL_ARGUMENT		`catalogueId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableCatalogueIdsForOffering
Description	Gets a list of catalogues including and under the given catalogue node in which a specific offering can be assigned.
Parameters	`osid.id.Id`	`catalogueId`	the `Id` of the `Catalogue`
Parameters	`osid.id.Id`	`offeringId`	the `Id` of the `Offering`
Return	`osid.id.IdList`		list of assignable catalogue `Ids`
Errors	NULL_ARGUMENT		`catalogueId` or `offeringId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	assignOfferingToCatalogue
Description	Adds an existing `Offering` to a `Catalogue.`
Parameters	`osid.id.Id`	`offeringId`	the `Id` of the `Offering`
Parameters	`osid.id.Id`	`catalogueId`	the `Id` of the `Catalogue`
Errors	ALREADY_EXISTS		`offeringId` already assigned to `catalogueId`
	NOT_FOUND		`offeringId` or `catalogueId` not found
	NULL_ARGUMENT		`offeringId` or `catalogueId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignOfferingFromCatalogue
Description	Removes an `Offering` from a `Catalogue.`
Parameters	`osid.id.Id`	`offeringId`	the `Id` of the `Offering`
Parameters	`osid.id.Id`	`catalogueId`	the `Id` of the `Catalogue`
Errors	NOT_FOUND		`offeringId` or `catalogueId` not found or `offeringId` not mapped to `catalogueId`
	NULL_ARGUMENT		`offeringId` or `catalogueId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.