blasd.apex.core.collection

Class ImmutableArrayList<T>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<T>

blasd.apex.core.collection.ImmutableArrayList<T>

Type Parameters:

T -

All Implemented Interfaces:

Iterable<T>, Collection<T>, List<T>

public final class ImmutableArrayList<T>
extends AbstractList<T>

A List implementation, improving performance when List are used as a Map key, or when one need to extract only a subset of indexes from an input array

Author:

Benoit Lacelle

Field Summary

Fields

Modifier and Type	Field and Description
protected int	hashCode
protected int[]	indexes
protected T[]	underlyingArray

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
ImmutableArrayList(T[] underlyingArray)
ImmutableArrayList(T[] underlyingArray, int[] indexes)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
T	get(int index)
int	hashCode()
T	set(int index, T value)
int	size()

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, indexOf, iterator, lastIndexOf, listIterator, listIterator, remove, removeRange, subList

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

addAll, contains, containsAll, isEmpty, remove, removeAll, replaceAll, retainAll, sort, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

underlyingArray

protected final T[] underlyingArray

indexes

protected final int[] indexes

hashCode

protected final int hashCode

Constructor Detail

ImmutableArrayList

public ImmutableArrayList(T[] underlyingArray,
                          int[] indexes)

ImmutableArrayList

public ImmutableArrayList(T[] underlyingArray)

Method Detail

get

public T get(int index)

Specified by:

get in interface List<T>

Specified by:

get in class AbstractList<T>

set

public T set(int index,
             T value)

Specified by:

set in interface List<T>

Overrides:

set in class AbstractList<T>

size

public int size()

Specified by:

size in interface Collection<T>

Specified by:

size in interface List<T>

Specified by:

size in class AbstractCollection<T>

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<T>

Specified by:

hashCode in interface List<T>

Overrides:

hashCode in class AbstractList<T>

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<T>

Specified by:

equals in interface List<T>

Overrides:

equals in class AbstractList<T>