mondrian.util

Class CombiningGenerator<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<List<E>>

mondrian.util.CombiningGenerator<E>

All Implemented Interfaces:

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

public class CombiningGenerator<E>
extends AbstractList<List<E>>

A list that, given a collection of elements, contains every possible combination of those objects (also known as the power set of those objects).

Author:

LBoudreau, jhyde

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
CombiningGenerator(Collection<E> elements) Creates a CombiningGenerator.

Method Summary

Modifier and Type	Method and Description
List<E>	get(int index)
static void	main(String[] args) Ad hoc test.
static <T> CombiningGenerator<T>	of(Collection<T> elements) Creates a CombiningGenerator, inferring the type from the argument.
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

CombiningGenerator

public CombiningGenerator(Collection<E> elements)

Creates a CombiningGenerator.

Parameters:

elements - Elements to iterate over

Method Detail

of

public static <T> CombiningGenerator<T> of(Collection<T> elements)

Creates a CombiningGenerator, inferring the type from the argument.

Type Parameters:

T - Element type

Parameters:

elements - Elements to iterate over

Returns:

Combing generator containing the power set

get

public List<E> get(int index)

Specified by:

get in interface List<List<E>>

Specified by:

get in class AbstractList<List<E>>

size

public int size()

Specified by:

size in interface Collection<List<E>>

Specified by:

size in interface List<List<E>>

Specified by:

size in class AbstractCollection<List<E>>

main

public static void main(String[] args)

Ad hoc test. See also UtilTest.testCombiningGenerator.

Parameters:

args - ignored