org.jboss.cache.util
Class MapCopy<K,V>

java.lang.Object
  java.util.AbstractMap<K,V>
      org.jboss.cache.util.MapCopy<K,V>

All Implemented Interfaces:

Serializable, Map<K,V>

@Immutable
public class MapCopy<K,V>
extends AbstractMap<K,V>
implements Serializable

Contains a fixed array of read-only map entries, from a copy of an existing map. This class is more lightweight for places where the copied map will just be iterated over.

This map is strictly read-only, and map modification methods (as well as modifications over iterators) will throw UnsupportedOperationExceptions.

Author:

Elias Ross

See Also:

Serialized Form

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

MapCopy()

MapCopy(Map<K,V> m)
Copies the supplied map to an internal array.

Method Summary

static <L,W> Map<L,W>	copy(Map<L,W> m) Returns a copy of the given map.
Set<Map.Entry<K,V>>	entrySet()
int	size()

Methods inherited from class java.util.AbstractMap

clear, clone, containsKey, containsValue, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, toString, values

Methods inherited from class java.lang.Object

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

Constructor Detail

MapCopy

public MapCopy(Map<K,V> m)

Copies the supplied map to an internal array.

Parameters:

m - map to copy

MapCopy

public MapCopy()

Method Detail

copy

public static <L,W> Map<L,W> copy(Map<L,W> m)

Returns a copy of the given map.

entrySet

public Set<Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in class AbstractMap<K,V>

size

public int size()

Specified by:

size in interface Map<K,V>

Overrides:

size in class AbstractMap<K,V>