Package net.shibboleth.utilities.java.support.collection

Class LazySet<ElementType>

java.lang.Object

net.shibboleth.utilities.java.support.collection.LazySet<ElementType>

Type Parameters:

ElementType - type of the elements within the set

All Implemented Interfaces:

Serializable, Iterable<ElementType>, Collection<ElementType>, Set<ElementType>

@NotThreadSafe
public class LazySet<ElementType>
extends Object
implements Set<ElementType>, Serializable

A set that is lazy initialized. This set takes very little memory when storing zero or one item.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private Set<ElementType>	delegate	The delegate set.
private static long	serialVersionUID	Serial version UID.

Constructor Summary

Constructors

Constructor	Description
LazySet()

Method Summary

Modifier and Type	Method	Description
boolean	add(ElementType element)
boolean	addAll(Collection<? extends ElementType> collection)
void	clear()
boolean	contains(Object element)
boolean	containsAll(Collection<?> collection)
private Set<ElementType>	createImplementation()	Builds an appropriate delegate set.
boolean	equals(Object obj)
int	hashCode()
boolean	isEmpty()
Iterator<ElementType>	iterator()
boolean	remove(Object element)
boolean	removeAll(Collection<?> collection)
boolean	retainAll(Collection<?> collection)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] type)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

spliterator

Field Details

serialVersionUID

private static final long serialVersionUID

Serial version UID.

See Also:

Constant Field Values

delegate

private Set<ElementType> delegate

The delegate set.

Constructor Details

LazySet

public LazySet()

Method Details

add

public boolean add(ElementType element)

Specified by:

add in interface Collection<ElementType>

Specified by:

add in interface Set<ElementType>

addAll

public boolean addAll(Collection<? extends ElementType> collection)

Specified by:

addAll in interface Collection<ElementType>

Specified by:

addAll in interface Set<ElementType>

clear

public void clear()

Specified by:

clear in interface Collection<ElementType>

Specified by:

clear in interface Set<ElementType>

contains

public boolean contains(Object element)

Specified by:

contains in interface Collection<ElementType>

Specified by:

contains in interface Set<ElementType>

containsAll

public boolean containsAll(Collection<?> collection)

Specified by:

containsAll in interface Collection<ElementType>

Specified by:

containsAll in interface Set<ElementType>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<ElementType>

Specified by:

isEmpty in interface Set<ElementType>

iterator

public Iterator<ElementType> iterator()

Specified by:

iterator in interface Collection<ElementType>

Specified by:

iterator in interface Iterable<ElementType>

Specified by:

iterator in interface Set<ElementType>

remove

public boolean remove(Object element)

Specified by:

remove in interface Collection<ElementType>

Specified by:

remove in interface Set<ElementType>

removeAll

public boolean removeAll(Collection<?> collection)

Specified by:

removeAll in interface Collection<ElementType>

Specified by:

removeAll in interface Set<ElementType>

retainAll

public boolean retainAll(Collection<?> collection)

Specified by:

retainAll in interface Collection<ElementType>

Specified by:

retainAll in interface Set<ElementType>

size

public int size()

Specified by:

size in interface Collection<ElementType>

Specified by:

size in interface Set<ElementType>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<ElementType>

Specified by:

toArray in interface Set<ElementType>

toArray

public <T> T[] toArray(T[] type)

Specified by:

toArray in interface Collection<ElementType>

Specified by:

toArray in interface Set<ElementType>

createImplementation

private Set<ElementType> createImplementation()

Builds an appropriate delegate set.

Returns:

the delegate set

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<ElementType>

Specified by:

hashCode in interface Set<ElementType>

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Specified by:

equals in interface Collection<ElementType>

Specified by:

equals in interface Set<ElementType>

Overrides:

equals in class Object