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,V>

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
LazyMap()

Method Summary

Methods

Modifier and Type	Method and 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

Field Detail

serialVersionUID

private static final long serialVersionUID

Serial version UID.

See Also:

Constant Field Values

delegate

private Map<KeyType,ValueType> delegate

The delegate map.

Constructor Detail

LazyMap

public LazyMap()

Method Detail

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