net.sf.molae.pipe.genimpl
Class MapBasedList<K,E>

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<E>
          net.sf.molae.pipe.genimpl.MapBasedList<K,E>

All Implemented Interfaces:

Iterable<E>, Collection<E>, List<E>

public class MapBasedList<K,E>
extends AbstractList<E>

A list that is based on a map and a list of keys. The list of keys defines for every index the key of the map that corresponds to the index, so that get(i) = map.get(keys.get(index)) . In contrast to a TransformedList, modifications with set affect the map and not the list.

Since:

1.1

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

MapBasedList(Map<K,E> base, List<K> keys)
Constructs a new MapBasedList.

Method Summary

E	get(int index)
static <K,E> TwoWayTransformer<Map<K,E>,List<E>>	Map2ListTransformer(List<K> base) Creates a transformer that transforms a map into a MapBasedList.
E	remove(int index)
E	set(int index, E element)
int	size()

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, 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, retainAll, toArray, toArray

Constructor Detail

MapBasedList

public MapBasedList(Map<K,E> base,
                    List<K> keys)

Constructs a new MapBasedList.

Parameters:

base - the underlying map

keys - the list of keys

Method Detail

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in interface List<E>

Specified by:

size in class AbstractCollection<E>

get

public E get(int index)

Specified by:

get in interface List<E>

Specified by:

get in class AbstractList<E>

set

public E set(int index,
             E element)

Specified by:

set in interface List<E>

Overrides:

set in class AbstractList<E>

remove

public E remove(int index)

Specified by:

remove in interface List<E>

Overrides:

remove in class AbstractList<E>

Map2ListTransformer

public static <K,E> TwoWayTransformer<Map<K,E>,List<E>> Map2ListTransformer(List<K> base)

Creates a transformer that transforms a map into a MapBasedList.

Parameters:

base - The key list of each of the created MapBasedLists.

Returns:

a transformer that transforms a map into a MapBasedList