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com.tangosol.util
Class SafeSortedMap.EntryNode.MapEntry

java.lang.Object
com.tangosol.util.SafeSortedMap.EntryNode.MapEntry

All Implemented Interfaces:

Map.Entry

Enclosing class:

SafeSortedMap.EntryNode

protected class SafeSortedMap.EntryNode.MapEntry

extends Object

implements Map.Entry

A Map.Entry view of the EntryNode. This implementation supports updates via {#setValue}, but the behaviour is undefined in the presence of concurrent removes.

Constructor Summary

protected

SafeSortedMap.EntryNode.MapEntry()

Method Summary

boolean	equals(Object o) Compares the specified object with this entry for equality.
Object	getKey() Returns the key corresponding to this entry.
Object	getValue() Returns the value corresponding to this entry.
int	hashCode() Returns the hash code value for this map entry.
Object	setValue(Object oValueNew) Replaces the value corresponding to this entry with the specified value (optional operation).

Constructor Detail

SafeSortedMap.EntryNode.MapEntry

protected SafeSortedMap.EntryNode.MapEntry()

Method Detail

getKey

public Object getKey()

Returns the key corresponding to this entry.

Specified by:

getKey in interface Map.Entry

Returns:

the key corresponding to this entry.

getValue

public Object getValue()

Returns the value corresponding to this entry. If the mapping has been removed from the backing map (by the iterator's remove operation), the results of this call are undefined.

Specified by:

getValue in interface Map.Entry

Returns:

the value corresponding to this entry.

setValue

public Object setValue(Object oValueNew)

Replaces the value corresponding to this entry with the specified value (optional operation). (Writes through to the map.) The behavior of this call is undefined if the mapping has already been removed from the map (by the iterator's remove operation).

Specified by:

setValue in interface Map.Entry

Parameters:

oValueNew - new value to be stored in this entry.

Returns:

old value corresponding to the entry.

equals

public boolean equals(Object o)

Compares the specified object with this entry for equality. Returns true if the given object is also a map entry and the two entries represent the same mapping. More formally, two entries e1 and e2 represent the same mapping if

     (e1.getKey()==null ?
      e2.getKey()==null : e1.getKey().equals(e2.getKey()))  &&
     (e1.getValue()==null ?
      e2.getValue()==null : e1.getValue().equals(e2.getValue()))
 

This ensures that the equals method works properly across different implementations of the Map.Entry interface.

Specified by:

equals in interface Map.Entry

Parameters:

o - object to be compared for equality with this map entry.

Returns:

true if the specified object is equal to this map entry.

hashCode

public int hashCode()

Returns the hash code value for this map entry. The hash code of a map entry e is defined to be:

     (e.getKey()==null   ? 0 : e.getKey().hashCode()) ^
     (e.getValue()==null ? 0 : e.getValue().hashCode())
 

This ensures that e1.equals(e2) implies that e1.hashCode()==e2.hashCode() for any two Entries e1 and e2, as required by the general contract of Object.hashCode.

Specified by:

hashCode in interface Map.Entry

Returns:

the hash code value for this map entry.

See Also:

Object.hashCode(), Object.equals(Object), Map.Entry.equals(Object)

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