com.helger.commons.tree

Interface IBasicTree<DATATYPE,ITEMTYPE extends IBasicTreeItem<DATATYPE,ITEMTYPE>>

Type Parameters:

DATATYPE - tree item value type

ITEMTYPE - tree item implementation type

All Superinterfaces:

IHasChildren<ITEMTYPE>

All Known Subinterfaces:

IFolderTree<KEYTYPE,DATATYPE,COLLTYPE,ITEMTYPE>, ITree<DATATYPE,ITEMTYPE>, ITreeWithGlobalUniqueID<KEYTYPE,DATATYPE,ITEMTYPE>, ITreeWithID<KEYTYPE,DATATYPE,ITEMTYPE>

All Known Implementing Classes:

AbstractApplicationSingletonTreeWithUniqueID, AbstractGlobalSingletonTreeWithUniqueID, AbstractRequestSingletonTreeWithUniqueID, AbstractSessionApplicationSingletonTreeWithUniqueID, AbstractSessionSingletonTreeWithUniqueID, BasicFolderTree, BasicTree, BasicTreeWithGlobalUniqueID, BasicTreeWithID, DefaultFolderTree, DefaultTree, DefaultTreeWithGlobalUniqueID, DefaultTreeWithID, FileSystemFolderTree

public interface IBasicTree<DATATYPE,ITEMTYPE extends IBasicTreeItem<DATATYPE,ITEMTYPE>>
extends IHasChildren<ITEMTYPE>

Base interface for a tree.

Author:

Philip Helger

Method Summary

Methods

Modifier and Type	Method and Description
ITEMTYPE	getRootItem()

Methods inherited from interface com.helger.commons.hierarchy.IHasChildren

getAllChildren, getChildCount, hasChildren

Method Detail

getRootItem

@Nonnull
ITEMTYPE getRootItem()

Returns:

The root item of the tree. Never null. The root item should not be displayed but it is the parent node of all displayed root items and therefore cannot be removed.