com.faunos.util
Class CopyOnWriteMap<K,V>

java.lang.Object
  com.faunos.util.AbstractCopyOnWriteMap<K,V,Map<K,V>>
      com.faunos.util.CopyOnWriteMap<K,V>

All Implemented Interfaces:

Cloneable, Map<K,V>

public class CopyOnWriteMap<K,V>
extends AbstractCopyOnWriteMap<K,V,Map<K,V>>
implements Cloneable

A copy-on-write Map implementation using a backing java.util.HashMap.

Author:

Babak Farhang

See Also:

AbstractCopyOnWriteMap

Nested Class Summary

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

Map.Entry<K,V>

Field Summary

Fields inherited from class com.faunos.util.AbstractCopyOnWriteMap

impl

Constructor Summary

CopyOnWriteMap()
Default constructor creates an empty map.

CopyOnWriteMap(CopyOnWriteMap<K,V> copy)
Copy constructor.

Method Summary

protected Map<K,V>	emptyMap() Returns an implementation-specific empty map.
protected Map<K,V>	newMap() Returns a new HashMap.

Methods inherited from class com.faunos.util.AbstractCopyOnWriteMap

clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, setMap, size, values

Methods inherited from class java.lang.Object

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

Constructor Detail

CopyOnWriteMap

public CopyOnWriteMap()

Default constructor creates an empty map.

CopyOnWriteMap

public CopyOnWriteMap(CopyOnWriteMap<K,V> copy)

Copy constructor. This makes a shallow copy. Note this class is also Cloneable.

Throws:

NullPointerException - if copy is null.

Method Detail

emptyMap

protected final Map<K,V> emptyMap()

Description copied from class: AbstractCopyOnWriteMap

Returns an implementation-specific empty map. The returned map may be read-only. An implementation ought to return the same empty instance across all instances of its class.

Specified by:

emptyMap in class AbstractCopyOnWriteMap<K,V,Map<K,V>>

newMap

protected Map<K,V> newMap()

Returns a new HashMap.

Specified by:

newMap in class AbstractCopyOnWriteMap<K,V,Map<K,V>>