OSID - osid.ordering.StoreHierarchySession Service Interface Definition

Interface	osid.ordering.StoreHierarchySession
Implements	`osid.OsidSession`
Description	This session defines methods for traversing a hierarchy of `Store` objects. Each node in the hierarchy is a unique `Store.` The hierarchy may be traversed recursively to establish the tree structure through `getParentStores()` and `getChildStores().` To relate these `Ids` to another OSID, `getStoreNodes()` can be used for retrievals that can be used for bulk lookups in other OSIDs. Any `Store` available in the Order OSID is known to this hierarchy but does not appear in the hierarchy traversal until added as a root node or a child of another node. A user may not be authorized to traverse the entire hierarchy. Parts of the hierarchy may be made invisible through omission from the returns of `getParentStores()` or `getChildStores()` in lieu of a `PERMISSION_DENIED` error that may disrupt the traversal through authorized pathways. This session defines views that offer differing behaviors when retrieving multiple objects. comparative view: store elements may be silently omitted or re-ordered plenary view: provides a complete set or is an error condition
Method	getStoreHierarchyId
Description	Gets the hierarchy `Id` associated with this session.
Return	`osid.id.Id`		the hierarchy `Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getStoreHierarchy
Description	Gets the hierarchy associated with this session.
Return	`osid.hierarchy.Hierarchy`		the hierarchy associated with this session
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canAccessStoreHierarchy
Description	Tests if this user can perform hierarchy queries. 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 lookup operations.
Return	`boolean`		`false` if hierarchy traversal methods are not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	useComparativeStoreView
Description	The returns from the store methods may omit or translate elements based on this session, such as authorization, and not result in an error. This view is used when greater interoperability is desired at the expense of precision.
Compliance	`mandatory`		This method is must be implemented.
Method	usePlenaryStoreView
Description	A complete view of the `Store` returns is desired. Methods will return what is requested or result in an error. This view is used when greater precision is desired at the expense of interoperability.
Compliance	`mandatory`		This method is must be implemented.
Method	getRootStoreIds
Description	Gets the root store `Ids` in this hierarchy.
Return	`osid.id.IdList`		the root store `Ids`
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getRootStores
Description	Gets the root stores in the store hierarchy. A node with no parents is an orphan. While all store `Ids` are known to the hierarchy, an orphan does not appear in the hierarchy unless explicitly added as a root node or child of another node.
Return	`osid.ordering.StoreList`		the root stores
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method is must be implemented.
Method	hasParentStores
Description	Tests if the `Store` has any parents.
Parameters	`osid.id.Id`	`storeId`	a store `Id`
Return	`boolean`		`true` if the store has parents, f `alse` otherwise
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	isParentOfStore
Description	Tests if an `Id` is a direct parent of store.
Parameters	`osid.id.Id`	`id`	an `Id`
Parameters	`osid.id.Id`	`storeId`	the `Id` of a store
Return	`boolean`		`true` if this `id` is a parent of `storeId,` f `alse` otherwise
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`id` or `storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Provider Notes	If `id` not found return `false.`
Method	getParentStoreIds
Description	Gets the parent `Ids` of the given store.
Parameters	`osid.id.Id`	`storeId`	a store `Id`
Return	`osid.id.IdList`		the parent `Ids` of the store
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getParentStores
Description	Gets the parent stores of the given `id.`
Parameters	`osid.id.Id`	`storeId`	the `Id` of the `Store` to query
Return	`osid.ordering.StoreList`		the parent stores of the `id`
Errors	NOT_FOUND		a `Store` identified by `Id is` not found
	NULL_ARGUMENT		`storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	isAncestorOfStore
Description	Tests if an `Id` is an ancestor of a store.
Parameters	`osid.id.Id`	`id`	an `Id`
Parameters	`osid.id.Id`	`storeId`	the `Id` of a store
Return	`boolean`		`tru` e if this `id` is an ancestor of `storeId,` `false` otherwise
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`id` or `storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Provider Notes	If `id` not found return `false.`
Method	hasChildStores
Description	Tests if a store has any children.
Parameters	`osid.id.Id`	`storeId`	a store `Id`
Return	`boolean`		`true` if the `storeId` has children, `false` otherwise
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	isChildOfStore
Description	Tests if a store is a direct child of another.
Parameters	`osid.id.Id`	`id`	an `Id`
Parameters	`osid.id.Id`	`storeId`	the `Id` of a store
Return	`boolean`		`true` if the `id` is a child of `storeId,` `false` otherwise
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`id` or `storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Provider Notes	If `id` not found return `false.`
Method	getChildStoreIds
Description	Gets the child `Ids` of the given store.
Parameters	`osid.id.Id`	`storeId`	the `Id` to query
Return	`osid.id.IdList`		the children of the store
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getChildStores
Description	Gets the child stores of the given `id.`
Parameters	`osid.id.Id`	`storeId`	the `Id` of the `Store` to query
Return	`osid.ordering.StoreList`		the child stores of the `id`
Errors	NOT_FOUND		a `Store` identified by `Id is` not found
	NULL_ARGUMENT		`storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	isDescendantOfStore
Description	Tests if an `Id` is a descendant of a store.
Parameters	`osid.id.Id`	`id`	an `Id`
Parameters	`osid.id.Id`	`storeId`	the `Id` of a store
Return	`boolean`		`true` if the `id` is a descendant of the `storeId,` `false` otherwise
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`id` or `storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Provider Notes	If `id` is not found return `false.`
Method	getStoreNodeIds
Description	Gets a portion of the hierarchy for the given store.
Parameters	`osid.id.Id`	`storeId`	the `Id` to query
	`cardinal`	`ancestorLevels`	the maximum number of ancestor levels to include. A value of 0 returns no parents in the node.
	`cardinal`	`descendantLevels`	the maximum number of descendant levels to include. A value of 0 returns no children in the node.
	`boolean`	`includeSiblings`	`true` to include the siblings of the given node, `false` to omit the siblings
Return	`osid.hierarchy.Node`		a store node
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getStoreNodes
Description	Gets a portion of the hierarchy for the given store.
Parameters	`osid.id.Id`	`storeId`	the `Id` to query
	`cardinal`	`ancestorLevels`	the maximum number of ancestor levels to include. A value of 0 returns no parents in the node.
	`cardinal`	`descendantLevels`	the maximum number of descendant levels to include. A value of 0 returns no children in the node.
	`boolean`	`includeSiblings`	`true` to include the siblings of the given node, `false` to omit the siblings
Return	`osid.ordering.StoreNode`		a store node
Errors	NOT_FOUND		`storeId` is not found
	NULL_ARGUMENT		`storeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.