it.unimi.dsi.fastutil.longs
Class Long2ReferenceMaps.Singleton<V>

java.lang.Object
  extended by it.unimi.dsi.fastutil.longs.AbstractLong2ReferenceFunction<V>
      extended by it.unimi.dsi.fastutil.longs.Long2ReferenceFunctions.Singleton<V>
          extended by it.unimi.dsi.fastutil.longs.Long2ReferenceMaps.Singleton<V>
All Implemented Interfaces:
Function<Long,V>, Long2ReferenceFunction<V>, Long2ReferenceMap<V>, Serializable, Cloneable, Map<Long,V>
Direct Known Subclasses:
Long2ReferenceSortedMaps.Singleton
Enclosing class:
Long2ReferenceMaps

public static class Long2ReferenceMaps.Singleton<V>
extends Long2ReferenceFunctions.Singleton<V>
implements Long2ReferenceMap<V>, Serializable, Cloneable

An immutable class representing a type-specific singleton map.

This class may be useful to implement your own in case you subclass a type-specific map.

See Also:
Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.longs.Long2ReferenceMap
Long2ReferenceMap.Entry<V>, Long2ReferenceMap.FastEntrySet<V>
 
Field Summary
static long serialVersionUID
           
 
Method Summary
 boolean containsValue(Object v)
           
 ObjectSet<Map.Entry<Long,V>> entrySet()
          Returns a set view of the mappings contained in this map.
 boolean equals(Object o)
           
 int hashCode()
           
 boolean isEmpty()
           
 LongSet keySet()
          Returns a set view of the keys contained in this map.
 ObjectSet<Long2ReferenceMap.Entry<V>> long2ReferenceEntrySet()
          Returns a type-specific set view of the mappings contained in this map.
 void putAll(Map<? extends Long,? extends V> m)
           
 String toString()
           
 ReferenceCollection<V> values()
          Returns a set view of the values contained in this map.
 
Methods inherited from class it.unimi.dsi.fastutil.longs.Long2ReferenceFunctions.Singleton
clone, containsKey, get, size
 
Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2ReferenceFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, get, put, put, remove, remove
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2ReferenceFunction
containsKey, defaultReturnValue, defaultReturnValue, get, put, remove
 
Methods inherited from interface it.unimi.dsi.fastutil.Function
clear, containsKey, get, put, remove, size
 
Methods inherited from interface java.util.Map
clear, containsKey, get, put, remove, size
 

Field Detail

serialVersionUID

public static final long serialVersionUID
See Also:
Constant Field Values
Method Detail

containsValue

public boolean containsValue(Object v)
Specified by:
containsValue in interface Map<Long,V>

putAll

public void putAll(Map<? extends Long,? extends V> m)
Specified by:
putAll in interface Map<Long,V>

long2ReferenceEntrySet

public ObjectSet<Long2ReferenceMap.Entry<V>> long2ReferenceEntrySet()
Description copied from interface: Long2ReferenceMap
Returns a type-specific set view of the mappings contained in this map.

This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Long2ReferenceMap.entrySet() so that it returns an ObjectSet of objects of type Long2ReferenceMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:
long2ReferenceEntrySet in interface Long2ReferenceMap<V>
Returns:
a type-specific set view of the mappings contained in this map.
See Also:
Long2ReferenceMap.entrySet()

keySet

public LongSet keySet()
Description copied from interface: Long2ReferenceMap
Returns a set view of the keys contained in this map.

Note that this specification strengthens the one given in Map.keySet().

Specified by:
keySet in interface Long2ReferenceMap<V>
Specified by:
keySet in interface Map<Long,V>
Returns:
a set view of the keys contained in this map.
See Also:
Map.keySet()

values

public ReferenceCollection<V> values()
Description copied from interface: Long2ReferenceMap
Returns a set view of the values contained in this map.

Note that this specification strengthens the one given in Map.values().

Specified by:
values in interface Long2ReferenceMap<V>
Specified by:
values in interface Map<Long,V>
Returns:
a set view of the values contained in this map.
See Also:
Map.values()

isEmpty

public boolean isEmpty()
Specified by:
isEmpty in interface Map<Long,V>

entrySet

public ObjectSet<Map.Entry<Long,V>> entrySet()
Description copied from interface: Long2ReferenceMap
Returns a set view of the mappings contained in this map.

Note that this specification strengthens the one given in Map.entrySet().

Specified by:
entrySet in interface Long2ReferenceMap<V>
Specified by:
entrySet in interface Map<Long,V>
Returns:
a set view of the mappings contained in this map.
See Also:
Map.entrySet()

hashCode

public int hashCode()
Specified by:
hashCode in interface Map<Long,V>
Overrides:
hashCode in class Object

equals

public boolean equals(Object o)
Specified by:
equals in interface Map<Long,V>
Overrides:
equals in class Object

toString

public String toString()
Overrides:
toString in class Object