com.helger.commons.hierarchy

Interface IParentProvider<PARENTTYPE>

Type Parameters:

PARENTTYPE - The type of object to get a parent from

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface IParentProvider<PARENTTYPE>

This helper interface is required to build a generic tree. This is required because the used interfaces do not provide a base interface implementing a getParent method.

Author:

Philip Helger

Method Summary

Modifier and Type	Method and Description
PARENTTYPE	getParent(PARENTTYPE aCurrent) Get the parent of the passed object.
static <PARENTTYPE extends IHasParent<PARENTTYPE>> IParentProvider<PARENTTYPE>	parentProviderHasParent()

Method Detail

getParent

@Nullable
PARENTTYPE getParent(PARENTTYPE aCurrent)

Get the parent of the passed object.

Parameters:

aCurrent - The object to determine the parent of. No null or non- null constraint possible.

Returns:

The parent object, or null if the object has no parent.

parentProviderHasParent

@Nullable
static <PARENTTYPE extends IHasParent<PARENTTYPE>> IParentProvider<PARENTTYPE> parentProviderHasParent()