org.osid.hierarchy

Interface Summary
Interface	Description
Hierarchy	A `Hierarchy` represents an authenticatable identity.
HierarchyAdminSession	This session creates, updates, and deletes `Hierarchies.`
HierarchyDesignSession	This session provides methods to manage a hierarchy.
HierarchyForm	This is the form for creating and updating `Hierarchy` objects.
HierarchyList	Like all `OsidLists,` `HierarchyList` provides a means for accessing `Id` elements sequentially either one at a time or many at a time.
HierarchyLookupSession	This session provides methods for retrieving `Hierarchy` objects.
HierarchyManager	The hierarchy manager provides access sessions to traverse and manage hierrachies of `Ids.`
HierarchyNotificationSession	This session defines methods to receive notifications on adds/changes to `Hierarchy` objects.
HierarchyProfile	The hierarchy profile describes the interoperability among hierarchy services.
HierarchyProxyManager	The hierarchy manager provides access sessions to traverse and manage hierrachies of `Ids.`
HierarchyQuery	This is the query for searching hierarchies.
HierarchyQueryInspector	This is the query inspector for examining hierarchy queries.
HierarchyQuerySession	This session provides methods for searching among `Hierarchy` objects.
HierarchyReceiver	The hierarchy receiver is the consumer supplied interface for receiving notifications pertaining to new, updated or deleted `Hierarchy` objects.
HierarchySearch	`HierarchySearch` defines the interface for specifying hierarchy search options.
HierarchySearchOrder	An interface for specifying the ordering of search results.
HierarchySearchResults	This interface provides a means to capture results of a search.
HierarchySearchSession	This session provides methods for searching among `Hierarchy` objects.
HierarchySequencingSession	This session provides methods to sequence the nodes in a hierarchy.
HierarchyStructureNotificationSession	This session defines methods to receive notifications on adds/changes to a hierarchical structure.
HierarchyStructureReceiver	The hierarchy receiver is the consumer supplied interface for receiving notifications pertaining to new, updated or deleted hierarchy nodes.
HierarchyTraversalSession	This session defines methods for traversing a hierarchy.
Node	This interface is a container for a partial hierarchy retrieval.
NodeList	Like all `OsidLists,` `NodeList` provides a means for accessing `Id` elements sequentially either one at a time or many at a time.

Package org.osid.hierarchy Description

The Open Service Interface Definitions for the org.osid.hierarchy service.

The Hierarchy OSID is an auxiliary service providing a means for accessing and managing hierarchical relationships among OSID Ids.

An OSID Id may have onr or more parents or children and the hierarchy itself represents a directed acyclic graph. The hierarchy service defines a set of interfaces used among other OSIDs that utilize hierarchies and can also be used to abstract hierarchical data into a standalone service.

Hierarchical queries may be performed using the HierarchyTraversalSession. A set of methods exist to query parents, children, ancestors, and decendants. A Node structure may be retrieved to access a portion of a hierarchy in bulk. The Node provides methods to get parents and children of the node directly.

Hierarchies are federateable by combining nodes. There is no hierarchy service for the hierarchy catalog.

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