cz.cuni.amis.utils.collections

Class ListConcatenation<T>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<T>

cz.cuni.amis.utils.collections.ListConcatenation<T>

All Implemented Interfaces:

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

public class ListConcatenation<T>
extends AbstractList<T>

An unmodifiable list that combines several child lists. The list represent view on the underlying lists, so if they are modified, so is this list. This class is not thread-safe (i.e. parallel modification to underlying lists may cause unexpected behaviour)

Author:

Martin Cerny

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
ListConcatenation(List<List<T>> lists)
ListConcatenation(List<T>... lists)

Method Summary

Modifier and Type	Method and Description
static <T> List<T>	concatenate(List<List<T>> lists) Concatenates lists into the most simple form.
static <T> List<T>	concatenate(List<T>... lists)
T	get(int index)
int	size()

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, remove, removeRange, set, 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

Constructor Detail

ListConcatenation

public ListConcatenation(List<List<T>> lists)

ListConcatenation

public ListConcatenation(List<T>... lists)

Method Detail

concatenate

public static <T> List<T> concatenate(List<T>... lists)

concatenate

public static <T> List<T> concatenate(List<List<T>> lists)

Concatenates lists into the most simple form.

• Empty lists are ommitted
• If there is only one non-empty list, the list is returned, instead of concatenation
• If there is another ListConcatenation among parameters, it is expanded and its components are taken directly

Type Parameters:

T -

Parameters:

lists -

Returns:

get

public T get(int index)

Specified by:

get in interface List<T>

Specified by:

get 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>