Interface FoundryHierarchySession

All Superinterfaces:
AutoCloseable, Closeable, OsidSession, OsidSession

public interface FoundryHierarchySession extends OsidSession

This session defines methods for traversing a hierarchy of Foundry objects. Each node in the hierarchy is a unique Foundry . The hierarchy may be traversed recursively to establish the tree structure through getParentFoundries() and getChildFoundries() . To relate these Ids to another OSID, getFoundryNodes() can be used for retrievals that can be used for bulk lookups in other OSIDs. Any Foundry available in the Resourcing OSID is known to this hierarchy but does not appear in the hierarchy traversal until added as a root foundry or a child of another foundry.

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 getParentFoundries() or getChildFoundries() in lieu of a PERMISSION_DENIED error that may disrupt the traversal through authorized effortways.

This session defines views that offer differing behaviors when retrieving multiple objects.

  • comparative foundry view: foundry elements may be silently omitted or re-ordered
  • plenary foundry view: provides a complete set or is an error condition