com.phloc.commons.hierarchy

Interface IBaseHierarchyWalker

All Known Subinterfaces:

IHierarchyWalkerCallback<DATATYPE>, IHierarchyWalkerDynamicCallback<DATATYPE>

All Known Implementing Classes:

DefaultHierarchyWalker, DefaultHierarchyWalkerCallback, DefaultHierarchyWalkerDynamicCallback

public interface IBaseHierarchyWalker

Base interface for iterating a hierarchy.

Author:

Philip Helger

Method Summary

Methods

Modifier and Type	Method and Description
void	begin() Called before the tree walking starts.
void	end() Called after the tree walking ended.
int	getLevel()
void	onLevelDown() Called before the tree walker descends into the next tree level.
void	onLevelUp() Called after the tree walker ascends into the previous tree level.

Method Detail

begin

void begin()

Called before the tree walking starts.

onLevelDown

void onLevelDown()

Called before the tree walker descends into the next tree level.

getLevel

@Nonnegative
int getLevel()

Returns:

The level of the current node within the tree. The root item has level 0.

onLevelUp

void onLevelUp()

Called after the tree walker ascends into the previous tree level.

end

void end()

Called after the tree walking ended.