org.apache.commons.collections
public interface OrderedBidiMap extends BidiMap, OrderedMap
Implementations should allow a value to be looked up from a key and a key to be looked up from a value with equal performance.
Since: Commons Collections 3.0
Version: $Revision: 155406 $ $Date: 2005-02-26 12:55:26 +0000 (Sat, 26 Feb 2005) $
Method Summary | |
---|---|
BidiMap | inverseBidiMap()
Gets a view of this map where the keys and values are reversed.
|
OrderedBidiMap | inverseOrderedBidiMap()
Gets a view of this map where the keys and values are reversed.
|
Changes to one map will be visible in the other and vice versa. This enables both directions of the map to be accessed equally.
Implementations should seek to avoid creating a new object every time this
method is called. See AbstractMap.values()
etc. Calling this
method on the inverse map should return the original.
Implementations must return an OrderedBidiMap
instance,
usually by forwarding to inverseOrderedBidiMap()
.
Returns: an inverted bidirectional map
Changes to one map will be visible in the other and vice versa. This enables both directions of the map to be accessed equally.
Implementations should seek to avoid creating a new object every time this
method is called. See AbstractMap.values()
etc. Calling this
method on the inverse map should return the original.
Returns: an inverted bidirectional map