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

Class LazyMap<KeyType,ValueType>

java.lang.Object

net.shibboleth.utilities.java.support.collection.LazyMap<KeyType,ValueType>

Type Parameters:

KeyType - the type of the map keys

ValueType - the type of the map values

All Implemented Interfaces:

Serializable, Map<KeyType,ValueType>

@NotThreadSafe
public class LazyMap<KeyType,ValueType>
extends Object
implements Map<KeyType,ValueType>, Serializable

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

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
private Map<KeyType,ValueType>	delegate	The delegate map.
private static long	serialVersionUID	Serial version UID.

Constructor Summary

Constructors

Constructor	Description
LazyMap()

Method Summary

Modifier and Type	Method	Description
protected Map<KeyType,ValueType>	buildMap()	Builds an appropriate delegate map.
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<KeyType,ValueType>>	entrySet()
boolean	equals(Object obj)
ValueType	get(Object key)
int	hashCode()
boolean	isEmpty()
Set<KeyType>	keySet()
ValueType	put(KeyType key, ValueType value)
void	putAll(Map<? extends KeyType,? extends ValueType> t)
ValueType	remove(Object key)
int	size()
String	toString()
Collection<ValueType>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Field Details

serialVersionUID

private static final long serialVersionUID

Serial version UID.

See Also:

Constant Field Values

delegate

private Map<KeyType,ValueType> delegate

The delegate map.

Constructor Details

LazyMap

public LazyMap()

Method Details

clear

public void clear()

Specified by:

clear in interface Map<KeyType,ValueType>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<KeyType,ValueType>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<KeyType,ValueType>

entrySet

public Set<Map.Entry<KeyType,ValueType>> entrySet()

Specified by:

entrySet in interface Map<KeyType,ValueType>

get

public ValueType get(Object key)

Specified by:

get in interface Map<KeyType,ValueType>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<KeyType,ValueType>

keySet

public Set<KeyType> keySet()

Specified by:

keySet in interface Map<KeyType,ValueType>

put

public ValueType put(KeyType key,
ValueType value)

Specified by:

put in interface Map<KeyType,ValueType>

putAll

public void putAll(Map<? extends KeyType,? extends ValueType> t)

Specified by:

putAll in interface Map<KeyType,ValueType>

remove

public ValueType remove(Object key)

Specified by:

remove in interface Map<KeyType,ValueType>

size

public int size()

Specified by:

size in interface Map<KeyType,ValueType>

values

public Collection<ValueType> values()

Specified by:

values in interface Map<KeyType,ValueType>

buildMap

protected Map<KeyType,ValueType> buildMap()

Builds an appropriate delegate map.

Returns:

the delegate map

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<KeyType,ValueType>

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Specified by:

equals in interface Map<KeyType,ValueType>

Overrides:

equals in class Object