polyglot.util

Class CachingTransformingList<T,U>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<U>

polyglot.util.TransformingList<T,U>

polyglot.util.CachingTransformingList<T,U>

All Implemented Interfaces:

java.lang.Iterable<U>, java.util.Collection<U>, java.util.List<U>

public class CachingTransformingList<T,U>
extends TransformingList<T,U>

This subclass of TransformingList applies the transformation to each element of the underlying list at most once.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.ArrayList<U>	cache

Fields inherited from class polyglot.util.TransformingList

trans, underlying

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
CachingTransformingList(java.util.Collection<? extends T> underlying, Transformation<T,U> trans)
CachingTransformingList(java.util.List<T> underlying, Transformation<T,U> trans)

Method Summary

Methods

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

Methods inherited from class polyglot.util.TransformingList

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, retainAll, toArray, toArray

Field Detail

cache

protected java.util.ArrayList<U> cache

Constructor Detail

CachingTransformingList

public CachingTransformingList(java.util.Collection<? extends T> underlying,
                       Transformation<T,U> trans)

CachingTransformingList

public CachingTransformingList(java.util.List<T> underlying,
                       Transformation<T,U> trans)

Method Detail

get

public U get(int index)

Specified by:

get in interface java.util.List<U>

Overrides:

get in class TransformingList<T,U>