OSID - osid.cataloging.CatalogAssignmentSession Service Interface Definition

Interface	osid.cataloging.CatalogAssignmentSession
Implements	`osid.OsidSession`
Used By	`osid.cataloging.CatalogingManager`
Used By	`osid.cataloging.CatalogingProxyManager`
Description	This session provides methods to assign OSID `Ids` to `Catalogs`. An `Id` may appear in multiple `Catalogs` and removing the last reference to an `Id` is the equivalent of deleting it. Each catalog may have its own authorizations as to who is allowed to operate on it. Like all `OsidSessions`, `CatalogAssignmentSessions` are dedicated to single processing threads and a single authenticated user.
Method	canAssignCatalogs
Description	Tests if this user can perform alter `Id/Catalog` 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.
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	assignIdToCatalog
Description	Adds an `Id` to a `Catalog`.
Parameters	`osid.id.Id`	`id`	an `Id`
Parameters	`osid.id.Id`	`catalogId`	the `Id` of the `Catalog`
Errors	ALREADY_EXISTS		`id` is already mapped to `catalogId`
	NOT_FOUND		`id` or `catalogId` not found
	NULL_ARGUMENT		`id` or `catalogId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignIdFromCatalog
Description	Removes an `Id` from a `Catalog` .
Parameters	`osid.id.Id`	`id`	an `Id`
Parameters	`osid.id.Id`	`catalogId`	the `Id` of the `Catalog`
Errors	NOT_FOUND		`id` or `catalogId` not found or `id` is not mapped to `catalogId`
	NULL_ARGUMENT		`id` or `catalogId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	reassignIdToCatalog
Description	Moves an `Id` from one `Catalog` to another. Mappings to other `Catalogs` are unaffected.
Parameters	`osid.id.Id`	`id`	the `Id`
	`osid.id.Id`	`fromCatalogId`	the `Id` of the current `Catalog`
	`osid.id.Id`	`toCatalogId`	the `Id` of the destination `Catalog`
Errors	ALREADY_EXISTS		`id` already assigned to `toCatalogId`
	NOT_FOUND		`id, fromCatalogId`, or `toCatalogId` not found or `id` not mapped to `fromCatalogId`
	NULL_ARGUMENT		`id, fromCatalogId`, or `toCatalogId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.