echopoint.util.collections
Class ConcurrentReaderHashMap.Entry

java.lang.Object
  echopoint.util.collections.ConcurrentReaderHashMap.Entry

All Implemented Interfaces:

Map.Entry

Enclosing class:

ConcurrentReaderHashMap

protected static class ConcurrentReaderHashMap.Entry
extends Object
implements Map.Entry

ConcurrentReaderHashMap collision list entry.

Field Summary

protected int	hash
protected Object	key
protected ConcurrentReaderHashMap.Entry	next
protected Object	value

Method Summary

boolean	equals(Object o)
Object	getKey()
Object	getValue() Get the value.
int	hashCode()
Object	setValue(Object value) Set the value of this entry.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

hash

protected final int hash

key

protected final Object key

next

protected final ConcurrentReaderHashMap.Entry next

value

protected volatile Object value

Method Detail

getKey

public Object getKey()

Specified by:

getKey in interface Map.Entry

getValue

public Object getValue()

Get the value. Note: In an entrySet or entrySet.iterator, unless the set or iterator is used under synchronization of the table as a whole (or you can otherwise guarantee lack of concurrent modification), getValue might return null, reflecting the fact that the entry has been concurrently removed. However, there are no assurances that concurrent removals will be reflected using this method.

Specified by:

getValue in interface Map.Entry

Returns:

the current value, or null if the entry has been detectably removed.

setValue

public Object setValue(Object value)

Set the value of this entry. Note: In an entrySet or entrySet.iterator), unless the set or iterator is used under synchronization of the table as a whole (or you can otherwise guarantee lack of concurrent modification), setValue is not strictly guaranteed to actually replace the value field obtained via the get operation of the underlying hash table in multithreaded applications. If iterator-wide synchronization is not used, and any other concurrent put or remove operations occur, sometimes even to other entries, then this change is not guaranteed to be reflected in the hash table. (It might, or it might not. There are no assurances either way.)

Specified by:

setValue in interface Map.Entry

Parameters:

value - the new value.

Returns:

the previous value, or null if entry has been detectably removed.

Throws:

NullPointerException - if the value is null.

equals

public boolean equals(Object o)

Specified by:

equals in interface Map.Entry

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map.Entry

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object