org.osid

Interface OsidNode

All Superinterfaces:

Aggregateable, Containable, Identifiable

All Known Subinterfaces:

AcademyNode, AccountNode, ActivityNode, AddressBookNode, AgencyNode, AntimatroidNode, AuctionHouseNode, BankNode, BillingNode, BinNode, BlogNode, BookNode, BusinessNode, BusinessNode, CalendarNode, CampusNode, CatalogNode, CatalogueNode, ChecklistNode, ConfigurationNode, CookbookNode, CourseCatalogNode, DepotNode, DictionaryNode, DistributorNode, EngineNode, EngineNode, FamilyNode, ForumNode, FoundryNode, FrontOfficeNode, GradebookNode, GraphNode, InquestNode, JournalNode, LocationNode, LogNode, MailboxNode, MapNode, Node, ObjectiveBankNode, ObjectiveNode, OfficeNode, OntologyNode, OrganizationNode, OublietteNode, PollsNode, ProcessNode, ProfileNode, PublisherNode, QualifierNode, RealmNode, RepositoryNode, ResourceNode, StockNode, StoreNode, SubjectNode, SystemNode, TermNode, TodoNode, UtilityNode, VaultNode, WarehouseNode

public interface OsidNode
extends Identifiable, Containable

A node interface for hierarchical objects. The Id of the node is the Id of the object represented at this node.

Method Summary

Methods

Modifier and Type	Method and Description
IdList	getChildIds() Gets the children of this node.
IdList	getParentIds() Gets the parents of this node.
boolean	hasChildren() Tests if any children are available in this node structure.
boolean	hasParents() Tests if any parents are available in this node structure.
boolean	isLeaf() Tests if this node is a leaf in the hierarchy (has no children).
boolean	isRoot() Tests if this node is a root in the hierarchy (has no parents).

Methods inherited from interface org.osid.Identifiable

getId, isCurrent

Methods inherited from interface org.osid.Containable

isSequestered

Method Detail

isRoot

boolean isRoot()

Tests if this node is a root in the hierarchy (has no parents). A node may have no more parents available in this node structure but is not a root in the hierarchy. If both isRoot() and hasParents() is false, the parents of this node may be accessed thorugh another node structure retrieval.

Returns:

true if this node is a root in the hierarchy, false otherwise

Compliance:

mandatory - This method must be implemented.

hasParents

boolean hasParents()

Tests if any parents are available in this node structure. There may be no more parents in this node structure however there may be parents that exist in the hierarchy.

Returns:

true if this node has parents, false otherwise

Compliance:

mandatory - This method must be implemented.

getParentIds

IdList getParentIds()

Gets the parents of this node.

Returns:

the parents of this node

Compliance:

mandatory - This method must be implemented.

isLeaf

boolean isLeaf()

Tests if this node is a leaf in the hierarchy (has no children). A node may have no more children available in this node structure but is not a leaf in the hierarchy. If both isLeaf() and hasChildren() is false, the children of this node may be accessed thorugh another node structure retrieval.

Returns:

true if this node is a leaf in the hierarchy, false otherwise

Compliance:

mandatory - This method must be implemented.

hasChildren

boolean hasChildren()

Tests if any children are available in this node structure. There may be no more children available in this node structure but this node may have children in the hierarchy.

Returns:

true if this node has children, false otherwise

Compliance:

mandatory - This method must be implemented.

getChildIds

IdList getChildIds()

Gets the children of this node.

Returns:

the children of this node

Compliance:

mandatory - This method must be implemented.