com.phloc.commons.hierarchy

Class DefaultHierarchyWalkerDynamicCallback<DATATYPE>

java.lang.Object

com.phloc.commons.hierarchy.DefaultHierarchyWalker

com.phloc.commons.hierarchy.DefaultHierarchyWalkerDynamicCallback<DATATYPE>

Type Parameters:

DATATYPE - The type of object in the hierarchy to be iterated

All Implemented Interfaces:

IBaseHierarchyWalker, IHierarchyWalkerDynamicCallback<DATATYPE>

public class DefaultHierarchyWalkerDynamicCallback<DATATYPE>
extends DefaultHierarchyWalker
implements IHierarchyWalkerDynamicCallback<DATATYPE>

The default implementation of the IHierarchyWalkerDynamicCallback interface doing nothing.

Author:

Philip Helger

Constructor Summary

Constructors

Constructor and Description
DefaultHierarchyWalkerDynamicCallback()
DefaultHierarchyWalkerDynamicCallback(int nInitialLevel)

Method Summary

Methods

Modifier and Type	Method and Description
EHierarchyCallbackReturn	onItemAfterChildren(DATATYPE aItem) Called after eventual children of the current item were iterated.
EHierarchyCallbackReturn	onItemBeforeChildren(DATATYPE aItem) Called before eventual children of the current item are iterated.

Methods inherited from class com.phloc.commons.hierarchy.DefaultHierarchyWalker

begin, end, getLevel, onLevelDown, onLevelUp

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.phloc.commons.hierarchy.IBaseHierarchyWalker

begin, end, getLevel, onLevelDown, onLevelUp

Constructor Detail

DefaultHierarchyWalkerDynamicCallback

public DefaultHierarchyWalkerDynamicCallback()

DefaultHierarchyWalkerDynamicCallback

public DefaultHierarchyWalkerDynamicCallback(int nInitialLevel)

Method Detail

onItemBeforeChildren

@OverrideOnDemand
@Nonnull
public EHierarchyCallbackReturn onItemBeforeChildren(DATATYPE aItem)

Description copied from interface: IHierarchyWalkerDynamicCallback

Called before eventual children of the current item are iterated.

Specified by:

onItemBeforeChildren in interface IHierarchyWalkerDynamicCallback<DATATYPE>

Parameters:

aItem - The current item. May be null.

Returns:

A non-null status code that determines how to continue iteration.

onItemAfterChildren

@OverrideOnDemand
@Nonnull
public EHierarchyCallbackReturn onItemAfterChildren(DATATYPE aItem)

Description copied from interface: IHierarchyWalkerDynamicCallback

Called after eventual children of the current item were iterated.

Specified by:

onItemAfterChildren in interface IHierarchyWalkerDynamicCallback<DATATYPE>

Parameters:

aItem - The current item. May be null.

Returns:

A non-null status code that determines how to continue iteration.