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:

java.io.Serializable, java.lang.Iterable<ElementType>, java.util.Collection<ElementType>, java.util.Set<ElementType>

@NotThreadSafe
public class LazySet<ElementType>
extends java.lang.Object
implements java.util.Set<ElementType>, java.io.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 and Description
private java.util.Set<ElementType>	delegate The delegate set.
private static long	serialVersionUID Serial version UID.

Constructor Summary

Constructors

Constructor and Description
LazySet()

Method Summary

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

spliterator

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

serialVersionUID

private static final long serialVersionUID

Serial version UID.

See Also:

Constant Field Values

delegate

private java.util.Set<ElementType> delegate

The delegate set.

Constructor Detail

LazySet

public LazySet()

Method Detail

add

public boolean add(ElementType element)

Specified by:

add in interface java.util.Collection<ElementType>

Specified by:

add in interface java.util.Set<ElementType>

addAll

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

Specified by:

addAll in interface java.util.Collection<ElementType>

Specified by:

addAll in interface java.util.Set<ElementType>

clear

public void clear()

Specified by:

clear in interface java.util.Collection<ElementType>

Specified by:

clear in interface java.util.Set<ElementType>

contains

public boolean contains(java.lang.Object element)

Specified by:

contains in interface java.util.Collection<ElementType>

Specified by:

contains in interface java.util.Set<ElementType>

containsAll

public boolean containsAll(java.util.Collection<?> collection)

Specified by:

containsAll in interface java.util.Collection<ElementType>

Specified by:

containsAll in interface java.util.Set<ElementType>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection<ElementType>

Specified by:

isEmpty in interface java.util.Set<ElementType>

iterator

public java.util.Iterator<ElementType> iterator()

Specified by:

iterator in interface java.lang.Iterable<ElementType>

Specified by:

iterator in interface java.util.Collection<ElementType>

Specified by:

iterator in interface java.util.Set<ElementType>

remove

public boolean remove(java.lang.Object element)

Specified by:

remove in interface java.util.Collection<ElementType>

Specified by:

remove in interface java.util.Set<ElementType>

removeAll

public boolean removeAll(java.util.Collection<?> collection)

Specified by:

removeAll in interface java.util.Collection<ElementType>

Specified by:

removeAll in interface java.util.Set<ElementType>

retainAll

public boolean retainAll(java.util.Collection<?> collection)

Specified by:

retainAll in interface java.util.Collection<ElementType>

Specified by:

retainAll in interface java.util.Set<ElementType>

size

public int size()

Specified by:

size in interface java.util.Collection<ElementType>

Specified by:

size in interface java.util.Set<ElementType>

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection<ElementType>

Specified by:

toArray in interface java.util.Set<ElementType>

toArray

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

Specified by:

toArray in interface java.util.Collection<ElementType>

Specified by:

toArray in interface java.util.Set<ElementType>

createImplementation

private java.util.Set<ElementType> createImplementation()

Builds an appropriate delegate set.

Returns:

the delegate set

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Collection<ElementType>

Specified by:

hashCode in interface java.util.Set<ElementType>

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in interface java.util.Collection<ElementType>

Specified by:

equals in interface java.util.Set<ElementType>

Overrides:

equals in class java.lang.Object