it.unimi.dsi.fastutil.longs
Class Long2LongMaps.Singleton

java.lang.Object
  extended by it.unimi.dsi.fastutil.longs.AbstractLong2LongFunction
      extended by it.unimi.dsi.fastutil.longs.Long2LongFunctions.Singleton
          extended by it.unimi.dsi.fastutil.longs.Long2LongMaps.Singleton
All Implemented Interfaces:
Function<Long,Long>, Long2LongFunction, Long2LongMap, Serializable, Cloneable, Map<Long,Long>
Direct Known Subclasses:
Long2LongSortedMaps.Singleton
Enclosing class:
Long2LongMaps

public static class Long2LongMaps.Singleton
extends Long2LongFunctions.Singleton
implements Long2LongMap, 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 Long2LongMaps.Singleton.SingletonEntry
           
 
Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.longs.Long2LongMap
Long2LongMap.Entry, Long2LongMap.FastEntrySet
 
Field Summary
protected  ObjectSet<Long2LongMap.Entry> entries
           
protected  LongSet keys
           
static long serialVersionUID
           
protected  LongCollection values
           
 
Fields inherited from class it.unimi.dsi.fastutil.longs.Long2LongFunctions.Singleton
key, value
 
Fields inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2LongFunction
defRetValue
 
Constructor Summary
protected Long2LongMaps.Singleton(long key, long value)
           
 
Method Summary
 boolean containsValue(long v)
           
 boolean containsValue(Object ov)
           
 ObjectSet<Map.Entry<Long,Long>> 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<Long2LongMap.Entry> long2LongEntrySet()
          Returns a type-specific set view of the mappings contained in this map.
 void putAll(Map<? extends Long,? extends Long> m)
           
 String toString()
           
 LongCollection values()
          Returns a set view of the values contained in this map.
 
Methods inherited from class it.unimi.dsi.fastutil.longs.Long2LongFunctions.Singleton
clone, containsKey, get, size
 
Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2LongFunction
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.Long2LongFunction
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<Long2LongMap.Entry> entries

keys

protected transient volatile LongSet keys

values

protected transient volatile LongCollection values
Constructor Detail

Long2LongMaps.Singleton

protected Long2LongMaps.Singleton(long key,
                                  long value)
Method Detail

containsValue

public boolean containsValue(long v)
Specified by:
containsValue in interface Long2LongMap
See Also:
Map.containsValue(Object)

containsValue

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

putAll

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

long2LongEntrySet

public ObjectSet<Long2LongMap.Entry> long2LongEntrySet()
Description copied from interface: Long2LongMap
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 Long2LongMap.entrySet() so that it returns an ObjectSet of objects of type Long2LongMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:
long2LongEntrySet in interface Long2LongMap
Returns:
a type-specific set view of the mappings contained in this map.
See Also:
Long2LongMap.entrySet()

keySet

public LongSet keySet()
Description copied from interface: Long2LongMap
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 Long2LongMap
Specified by:
keySet in interface Map<Long,Long>
Returns:
a set view of the keys contained in this map.
See Also:
Map.keySet()

values

public LongCollection values()
Description copied from interface: Long2LongMap
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 Long2LongMap
Specified by:
values in interface Map<Long,Long>
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,Long>

entrySet

public ObjectSet<Map.Entry<Long,Long>> entrySet()
Description copied from interface: Long2LongMap
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 Long2LongMap
Specified by:
entrySet in interface Map<Long,Long>
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,Long>
Overrides:
hashCode in class Object

equals

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

toString

public String toString()
Overrides:
toString in class Object


Copyright © 2011. All Rights Reserved.