OSID - osid.inventory.ItemNotificationSession Service Interface Definition

Interface	osid.inventory.ItemNotificationSession
Implements	`osid.OsidSession`
Description	This session defines methods to receive notifications on adds/changes to `Item` objects in this `Warehouse.` This also includes existing items that may appear or disappear due to changes in the `Warehouse` hierarchy, This session is intended for consumers needing to synchronize their state with this service without the use of polling. Notifications are cancelled when this session is closed. The two views defined in this session correspond to the views in the `ItemLookupSession.`
Method	getWarehouseId
Description	Gets the `Warehouse` `Id` associated with this session.
Return	`osid.id.Id`		the `Warehouse Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getWarehouse
Description	Gets the `Warehouse` associated with this session.
Return	`osid.inventory.Warehouse`		the warehouse
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canRegisterForItemNotifications
Description	Tests if this user can register for `Item` notifications. 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 opt not to offer notification operations.
Return	`boolean`		`false` if notification methods are not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	useFederatedWarehouseView
Description	Federates the view for methods in this session. A federated view will include items in catalogs which are children of this catalog in the warehouse hierarchy.
Compliance	`mandatory`		This method is must be implemented.
Method	useIsolatedWarehouseView
Description	Isolates the view for methods in this session. An isolated view restricts notifications to this warehouse only.
Compliance	`mandatory`		This method is must be implemented.
Method	registerForNewItems
Description	Register for notifications of new items. `ItemReceiver.newItems()` is invoked when a new `Item` appears in this warehouse.
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	registerForChangedItems
Description	Registers for notification of updated items. `ItemReceiver.changedItems()` is invoked when an item in this warehouse is changed.
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	registerForChangedItem
Description	Registers for notification of an updated item. `ItemReceiver.changedItems()` is invoked when the specified item in this warehouse is changed.
Parameters	`osid.id.Id`	`itemId`	the `Id` of the `Item` to monitor
Errors	NULL_ARGUMENT		`itemId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	registerForDeletedItems
Description	Registers for notification of deleted items. `ItemReceiver.deletedItems()` is invoked when an item is deleted or removed from this warehouse.
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	registerForDeletedItem
Description	Registers for notification of a deleted item. `ItemReceiver.deletedItems()` is invoked when the specified item is deleted or removed from this warehouse.
Parameters	`osid.id.Id`	`itemId`	the `Id` of the `Item` to monitor
Errors	NULL_ARGUMENT		`itemId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.