org.apache.commons.collections
Interface OrderedBidiMap
- BidiMap, IterableMap, Map, OrderedMap
- SortedBidiMap
- AbstractOrderedBidiMapDecorator, AbstractSortedBidiMapDecorator, DualTreeBidiMap, TreeBidiMap, UnmodifiableOrderedBidiMap, UnmodifiableSortedBidiMap
public interface OrderedBidiMap
Defines a map that allows bidirectional lookup between key and values
and retains and provides access to an ordering.
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.
$Revision: 1.4 $ $Date: 2004/02/18 01:15:42 $
inverseBidiMap
public BidiMap inverseBidiMap()
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()
.
- inverseBidiMap in interface BidiMap
- an inverted bidirectional map
inverseOrderedBidiMap
public 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.
- an inverted bidirectional map
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