net.sf.mmm.util.query.base

Class FastMappingList<S,E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

net.sf.mmm.util.query.base.MappingList<S,E>

net.sf.mmm.util.query.base.FastMappingList<S,E>

All Implemented Interfaces:

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

class FastMappingList<S,E>
extends MappingList<S,E>

Extends MappingList with a cache so that each list element gets mapped only once. This assumes that the original adapted list does not change (neither the size nor its elements).

Since:

8.0.0

Author:

hohwille

Field Summary

Fields

Modifier and Type	Field and Description
private Object[]	cache

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
FastMappingList(List<S> list, Function<S,E> mapper) The constructor.

Method Summary

Modifier and Type	Method and Description
E	get(int index)

Methods inherited from class net.sf.mmm.util.query.base.MappingList

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

Field Detail

cache

private final Object[] cache

Constructor Detail

FastMappingList

public FastMappingList(List<S> list,
                       Function<S,E> mapper)

The constructor.

Parameters:

list - the list to adapt.

mapper - the Function to map the List values.

Method Detail

get

public E get(int index)

Specified by:

get in interface List<E>

Overrides:

get in class MappingList<S,E>