it.unimi.dsi.fastutil.longs
Class Long2IntMaps.Singleton

java.lang.Object
  extended by it.unimi.dsi.fastutil.longs.AbstractLong2IntFunction
      extended by it.unimi.dsi.fastutil.longs.Long2IntFunctions.Singleton
          extended by it.unimi.dsi.fastutil.longs.Long2IntMaps.Singleton
All Implemented Interfaces:
Function<Long,Integer>, Long2IntFunction, Long2IntMap, Serializable, Cloneable, Map<Long,Integer>
Direct Known Subclasses:
Long2IntSortedMaps.Singleton
Enclosing class:
Long2IntMaps

public static class Long2IntMaps.Singleton
extends Long2IntFunctions.Singleton
implements Long2IntMap, 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
protected  class Long2IntMaps.Singleton.SingletonEntry
           
 
Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.longs.Long2IntMap
Long2IntMap.Entry, Long2IntMap.FastEntrySet
 
Field Summary
protected  ObjectSet<Long2IntMap.Entry> entries
           
protected  LongSet keys
           
static long serialVersionUID
           
protected  IntCollection values
           
 
Fields inherited from class it.unimi.dsi.fastutil.longs.Long2IntFunctions.Singleton
key, value
 
Fields inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2IntFunction
defRetValue
 
Constructor Summary
protected Long2IntMaps.Singleton(long key, int value)
           
 
Method Summary
 boolean containsValue(int v)
           
 boolean containsValue(Object ov)
           
 ObjectSet<Map.Entry<Long,Integer>> 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<Long2IntMap.Entry> long2IntEntrySet()
          Returns a type-specific set view of the mappings contained in this map.
 void putAll(Map<? extends Long,? extends Integer> m)
           
 String toString()
           
 IntCollection values()
          Returns a set view of the values contained in this map.
 
Methods inherited from class it.unimi.dsi.fastutil.longs.Long2IntFunctions.Singleton
clone, containsKey, get, size
 
Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2IntFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, get, put, put, remove, remove
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2IntFunction
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

entries

protected transient volatile ObjectSet<Long2IntMap.Entry> entries

keys

protected transient volatile LongSet keys

values

protected transient volatile IntCollection values
Constructor Detail

Long2IntMaps.Singleton

protected Long2IntMaps.Singleton(long key,
                                 int value)
Method Detail

containsValue

public boolean containsValue(int v)
Specified by:
containsValue in interface Long2IntMap
See Also:
Map.containsValue(Object)

containsValue

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

putAll

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

long2IntEntrySet

public ObjectSet<Long2IntMap.Entry> long2IntEntrySet()
Description copied from interface: Long2IntMap
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 Long2IntMap.entrySet() so that it returns an ObjectSet of objects of type Long2IntMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:
long2IntEntrySet in interface Long2IntMap
Returns:
a type-specific set view of the mappings contained in this map.
See Also:
Long2IntMap.entrySet()

keySet

public LongSet keySet()
Description copied from interface: Long2IntMap
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 Long2IntMap
Specified by:
keySet in interface Map<Long,Integer>
Returns:
a set view of the keys contained in this map.
See Also:
Map.keySet()

values

public IntCollection values()
Description copied from interface: Long2IntMap
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 Long2IntMap
Specified by:
values in interface Map<Long,Integer>
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,Integer>

entrySet

public ObjectSet<Map.Entry<Long,Integer>> entrySet()
Description copied from interface: Long2IntMap
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 Long2IntMap
Specified by:
entrySet in interface Map<Long,Integer>
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,Integer>
Overrides:
hashCode in class Object

equals

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

toString

public String toString()
Overrides:
toString in class Object


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