genius.core.list

Class ReadonlyList<E>

java.lang.Object

genius.core.list.ReadonlyList<E>

Type Parameters:

E - the type of the list elements

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<E>, java.util.Collection<E>, java.util.List<E>

public class ReadonlyList<E>
extends java.lang.Object
implements java.util.List<E>, java.io.Serializable

A read-only version of a List. This is similar to Collections.unmodifyableList, except that this can be extended when this is just a read-only view of a changing list. The bad thing about this is that it provides functions (eg add(Object)) that will just throw an exception. Such functions should not be available in the first place.

We have a better alternative in the ImmutableList. However that is a bare-bones and not common known class , which might confuse standard java programmers.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<E>	list

Constructor Summary

Constructors

Constructor and Description
ReadonlyList(java.util.List<E> infos)

Method Summary

Modifier and Type	Method and Description
boolean	add(E e)
void	add(int index, E element)
boolean	addAll(java.util.Collection<? extends E> c)
boolean	addAll(int index, java.util.Collection<? extends E> c)
void	clear()
boolean	contains(java.lang.Object o)
boolean	containsAll(java.util.Collection<?> c)
E	get(int index)
int	indexOf(java.lang.Object o)
boolean	isEmpty()
java.util.Iterator<E>	iterator()
int	lastIndexOf(java.lang.Object o)
java.util.ListIterator<E>	listIterator()
java.util.ListIterator<E>	listIterator(int index)
E	remove(int index)
boolean	remove(java.lang.Object o)
boolean	removeAll(java.util.Collection<?> c)
boolean	retainAll(java.util.Collection<?> c)
E	set(int index, E element)
int	size()
java.util.List<E>	subList(int fromIndex, int toIndex)
java.lang.Object[]	toArray()
<T> T[]	toArray(T[] a)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.List

equals, hashCode, replaceAll, sort, spliterator

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

list

protected final java.util.List<E> list

Constructor Detail

ReadonlyList

public ReadonlyList(java.util.List<E> infos)

Parameters:

infos - the list contents.

Method Detail

size

public int size()

Specified by:

size in interface java.util.Collection<E>

Specified by:

size in interface java.util.List<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection<E>

Specified by:

isEmpty in interface java.util.List<E>

contains

public boolean contains(java.lang.Object o)

Specified by:

contains in interface java.util.Collection<E>

Specified by:

contains in interface java.util.List<E>

iterator

public java.util.Iterator<E> iterator()

Specified by:

iterator in interface java.lang.Iterable<E>

Specified by:

iterator in interface java.util.Collection<E>

Specified by:

iterator in interface java.util.List<E>

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection<E>

Specified by:

toArray in interface java.util.List<E>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface java.util.Collection<E>

Specified by:

toArray in interface java.util.List<E>

add

public boolean add(E e)

Specified by:

add in interface java.util.Collection<E>

Specified by:

add in interface java.util.List<E>

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection<E>

Specified by:

remove in interface java.util.List<E>

containsAll

public boolean containsAll(java.util.Collection<?> c)

Specified by:

containsAll in interface java.util.Collection<E>

Specified by:

containsAll in interface java.util.List<E>

addAll

public boolean addAll(java.util.Collection<? extends E> c)

Specified by:

addAll in interface java.util.Collection<E>

Specified by:

addAll in interface java.util.List<E>

addAll

public boolean addAll(int index,
                      java.util.Collection<? extends E> c)

Specified by:

addAll in interface java.util.List<E>

removeAll

public boolean removeAll(java.util.Collection<?> c)

Specified by:

removeAll in interface java.util.Collection<E>

Specified by:

removeAll in interface java.util.List<E>

retainAll

public boolean retainAll(java.util.Collection<?> c)

Specified by:

retainAll in interface java.util.Collection<E>

Specified by:

retainAll in interface java.util.List<E>

clear

public void clear()

Specified by:

clear in interface java.util.Collection<E>

Specified by:

clear in interface java.util.List<E>

get

public E get(int index)

Specified by:

get in interface java.util.List<E>

set

public E set(int index,
             E element)

Specified by:

set in interface java.util.List<E>

add

public void add(int index,
                E element)

Specified by:

add in interface java.util.List<E>

remove

public E remove(int index)

Specified by:

remove in interface java.util.List<E>

indexOf

public int indexOf(java.lang.Object o)

Specified by:

indexOf in interface java.util.List<E>

lastIndexOf

public int lastIndexOf(java.lang.Object o)

Specified by:

lastIndexOf in interface java.util.List<E>

listIterator

public java.util.ListIterator<E> listIterator()

Specified by:

listIterator in interface java.util.List<E>

listIterator

public java.util.ListIterator<E> listIterator(int index)

Specified by:

listIterator in interface java.util.List<E>

subList

public java.util.List<E> subList(int fromIndex,
                                 int toIndex)

Specified by:

subList in interface java.util.List<E>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object