uk.ac.starlink.vo

Class Tree.Branch<T>

java.lang.Object

uk.ac.starlink.vo.Tree<T>

uk.ac.starlink.vo.Tree.Branch<T>

Enclosing class:

Tree<T>

public static class Tree.Branch<T>
extends Tree<T>

Tree instance that contains a list of children and no referenced item.

Nested Class Summary

Nested classes/interfaces inherited from class uk.ac.starlink.vo.Tree

Tree.Branch<T>, Tree.Leaf<T>

Constructor Summary

Constructors

Constructor and Description
Branch(List<Tree<T>> children, String label) Constructor.

Method Summary

Modifier and Type	Method and Description
Tree.Branch<T>	asBranch() Returns this instance as a Branch if it's a branch, or null if it's a leaf.
Tree.Leaf<T>	asLeaf() Returns this instance as a Leaf if it's a leaf, or null if it's a branch.
List<Tree<T>>	getChildren() Returns this branch's children.
String	getLabel() Returns this branch's label.
boolean	isLeaf() Returns true if this instance is a Leaf, false if it's a Branch.
<R> Tree.Branch<R>	map(java.util.function.Function<T,R> mapping) Recursively converts this Tree to one with the same structure, but with the leaf items mapped from their existing values to new values determined by a supplied mapping function.

Methods inherited from class java.lang.Object

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

Constructor Detail

Branch

public Branch(List<Tree<T>> children,
              String label)

Constructor.

Parameters:

children - list of child trees

label - label for this branch, may be null

Method Detail

getChildren

public List<Tree<T>> getChildren()

Returns this branch's children.

Returns:

list of child trees

getLabel

public String getLabel()

Returns this branch's label.

Returns:

label, may be null

isLeaf

public boolean isLeaf()

Description copied from class: Tree

Returns true if this instance is a Leaf, false if it's a Branch.

Specified by:

isLeaf in class Tree<T>

Returns:

true iff this is a leaf

asLeaf

public Tree.Leaf<T> asLeaf()

Description copied from class: Tree

Returns this instance as a Leaf if it's a leaf, or null if it's a branch.

Specified by:

asLeaf in class Tree<T>

Returns:

this cast to Leaf, or null

asBranch

public Tree.Branch<T> asBranch()

Description copied from class: Tree

Returns this instance as a Branch if it's a branch, or null if it's a leaf.

Specified by:

asBranch in class Tree<T>

Returns:

this cast to Branch, or null

map

public <R> Tree.Branch<R> map(java.util.function.Function<T,R> mapping)

Description copied from class: Tree

Recursively converts this Tree to one with the same structure, but with the leaf items mapped from their existing values to new values determined by a supplied mapping function.

Specified by:

map in class Tree<T>

Parameters:

mapping - mapping function

Returns:

tree with mapped values