| org.apache.commons.collections.OrderedBidiMap |
 Known Indirect Subclasses
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Class Overview
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.
Summary
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Gets a view of this map where the keys and values are reversed.
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Gets a view of this map where the keys and values are reversed.
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From interface
java.util.Map
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From interface
org.apache.commons.collections.BidiMap
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From interface
org.apache.commons.collections.IterableMap
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From interface
org.apache.commons.collections.OrderedMap
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Public Methods
public abstract 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().
Returns
- an inverted bidirectional map
public abstract 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.
Returns
- an inverted bidirectional map