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:

java.io.Serializable, java.util.Map<KeyType,ValueType>

@NotThreadSafe
public class LazyMap<KeyType,ValueType>
extends java.lang.Object
implements java.util.Map<KeyType,ValueType>, java.io.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

java.util.Map.Entry<K,V>

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
LazyMap()

Method Summary

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

serialVersionUID

private static final long serialVersionUID

Serial version UID.

See Also:

Constant Field Values

delegate

private java.util.Map<KeyType,ValueType> delegate

The delegate map.

Constructor Detail

LazyMap

public LazyMap()

Method Detail

clear

public void clear()

Specified by:

clear in interface java.util.Map<KeyType,ValueType>

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map<KeyType,ValueType>

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map<KeyType,ValueType>

entrySet

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

Specified by:

entrySet in interface java.util.Map<KeyType,ValueType>

get

public ValueType get(java.lang.Object key)

Specified by:

get in interface java.util.Map<KeyType,ValueType>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<KeyType,ValueType>

keySet

public java.util.Set<KeyType> keySet()

Specified by:

keySet in interface java.util.Map<KeyType,ValueType>

put

public ValueType put(KeyType key,
                     ValueType value)

Specified by:

put in interface java.util.Map<KeyType,ValueType>

putAll

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

Specified by:

putAll in interface java.util.Map<KeyType,ValueType>

remove

public ValueType remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<KeyType,ValueType>

size

public int size()

Specified by:

size in interface java.util.Map<KeyType,ValueType>

values

public java.util.Collection<ValueType> values()

Specified by:

values in interface java.util.Map<KeyType,ValueType>

buildMap

protected java.util.Map<KeyType,ValueType> buildMap()

Builds an appropriate delegate map.

Returns:

the delegate map

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map<KeyType,ValueType>

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in interface java.util.Map<KeyType,ValueType>

Overrides:

equals in class java.lang.Object