FingerTreeBuilder (BaseX Core 10.3 API)

java.lang.Object
- org.basex.query.util.fingertree.FingerTreeBuilder<E>

Type Parameters:

E - element type

All Implemented Interfaces:

Iterable<E>
```
public final class FingerTreeBuilder<E>
extends Object
implements Iterable<E>
```
A builder for FingerTrees from leaf nodes.

Author:

BaseX Team 2005-22, BSD License, Leo Woerteler

Constructor Summary

Constructors
Constructor Description

FingerTreeBuilder()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`append(FingerTree<E,E> tree)`	Appends another finger tree to this builder.
`void`	`append(Node<E,E> leaf)`	Adds a leaf node to the back of the tree.
`FingerTree<E,E>`	`freeze()`	Builds a finger tree from the current state of this builder.
`boolean`	`isEmpty()`	Checks if this builder is empty, i.e.
`Iterator<E>`	`iterator()`
`void`	`prepend(Node<E,E> leaf)`	Adds a leaf node to the front of the tree.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Constructor Detail
  - FingerTreeBuilder
```
public FingerTreeBuilder()
```
- Method Detail
  - isEmpty
```
public boolean isEmpty()
```
    Checks if this builder is empty, i.e. if no leaf nodes were added to it.
    
    Returns:
    
    true if the builder is empty, false otherwise
  - prepend
```
public void prepend(Node<E,E> leaf)
```
    Adds a leaf node to the front of the tree.
    
    Parameters:
    
    leaf - the leaf node to add
  - append
```
public void append(Node<E,E> leaf)
```
    Adds a leaf node to the back of the tree.
    
    Parameters:
    
    leaf - the leaf node to add
  - append
```
public void append(FingerTree<E,E> tree)
```
    Appends another finger tree to this builder.
    
    Parameters:
    
    tree - finger tree to append
  - freeze
```
public FingerTree<E,E> freeze()
```
    Builds a finger tree from the current state of this builder.
    
    Returns:
    
    the resulting finger tree
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - iterator
```
public Iterator<E> iterator()
```
    Specified by:
    
    iterator in interface Iterable<E>