edu.ucla.sspace.util

Class CombinedSet<T>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<T>

edu.ucla.sspace.util.CombinedSet<T>

All Implemented Interfaces:

Serializable, Iterable<T>, Collection<T>, Set<T>

public class CombinedSet<T>
extends AbstractSet<T>
implements Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CombinedSet(Collection<? extends Set<T>> sets)
CombinedSet(Set<T>... sets)

Method Summary

Methods

Modifier and Type	Method and Description
void	append(Set<T> set) Adds the provided set to this CombinedSet.
void	clear() Clears the elements from all backing sets.
boolean	contains(Object o) Returns true if at least one of the sets in this CombinedSet has the provided element.
boolean	isEmpty() Returns true if all the sets are empty.
Iterator<T>	iterator() Returns an iterator over all the unique items across all sets.
boolean	remove(Object o) Removes the provided element from all the backing sets, returning true if at least one set contained that element.
int	size() Returns the number of unique items across all sets.

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

add, addAll, containsAll, 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.Set

add, addAll, containsAll, retainAll, toArray, toArray

Constructor Detail

CombinedSet

public CombinedSet(Set<T>... sets)

CombinedSet

public CombinedSet(Collection<? extends Set<T>> sets)

Method Detail

append

public void append(Set<T> set)

Adds the provided set to this CombinedSet. Note that this does not perform an element-wise addition of the contents of set, but rather keeps a reference to set so that any changes to set will be reflected in this CombinedSet.

contains

public boolean contains(Object o)

Returns true if at least one of the sets in this CombinedSet has the provided element.

Specified by:

contains in interface Collection<T>

Specified by:

contains in interface Set<T>

Overrides:

contains in class AbstractCollection<T>

clear

public void clear()

Clears the elements from all backing sets.

Specified by:

clear in interface Collection<T>

Specified by:

clear in interface Set<T>

Overrides:

clear in class AbstractCollection<T>

iterator

public Iterator<T> iterator()

Returns an iterator over all the unique items across all sets.

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Set<T>

Specified by:

iterator in class AbstractCollection<T>

isEmpty

public boolean isEmpty()

Returns true if all the sets are empty.

Specified by:

isEmpty in interface Collection<T>

Specified by:

isEmpty in interface Set<T>

Overrides:

isEmpty in class AbstractCollection<T>

remove

public boolean remove(Object o)

Removes the provided element from all the backing sets, returning true if at least one set contained that element.

Specified by:

remove in interface Collection<T>

Specified by:

remove in interface Set<T>

Overrides:

remove in class AbstractCollection<T>

size

public int size()

Returns the number of unique items across all sets.

Specified by:

size in interface Collection<T>

Specified by:

size in interface Set<T>

Specified by:

size in class AbstractCollection<T>