it.unimi.dsi.fastutil.objects
Class Object2BooleanMaps.EmptyMap<K>

java.lang.Object
  extended by it.unimi.dsi.fastutil.objects.AbstractObject2BooleanFunction<K>
      extended by it.unimi.dsi.fastutil.objects.Object2BooleanFunctions.EmptyFunction<K>
          extended by it.unimi.dsi.fastutil.objects.Object2BooleanMaps.EmptyMap<K>
All Implemented Interfaces:
Function<K,Boolean>, Object2BooleanFunction<K>, Object2BooleanMap<K>, Serializable, Cloneable, Map<K,Boolean>
Direct Known Subclasses:
Object2BooleanSortedMaps.EmptySortedMap
Enclosing class:
Object2BooleanMaps

public static class Object2BooleanMaps.EmptyMap<K>
extends Object2BooleanFunctions.EmptyFunction<K>
implements Object2BooleanMap<K>, Serializable, Cloneable

An immutable class representing an empty type-specific 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.objects.Object2BooleanMap
Object2BooleanMap.Entry<K>, Object2BooleanMap.FastEntrySet<K>
 
Field Summary
static long serialVersionUID
           
 
Fields inherited from class it.unimi.dsi.fastutil.objects.AbstractObject2BooleanFunction
defRetValue
 
Constructor Summary
protected Object2BooleanMaps.EmptyMap()
           
 
Method Summary
 Object clone()
           
 boolean containsValue(boolean v)
           
 boolean containsValue(Object ov)
           
 ObjectSet<Map.Entry<K,Boolean>> entrySet()
          Returns a set view of the mappings contained in this map.
 boolean equals(Object o)
           
 int hashCode()
           
 boolean isEmpty()
           
 ObjectSet<K> keySet()
          Returns a set view of the keys contained in this map.
 ObjectSet<Object2BooleanMap.Entry<K>> object2BooleanEntrySet()
          Returns a type-specific set view of the mappings contained in this map.
 void putAll(Map<? extends K,? extends Boolean> m)
           
 String toString()
           
 BooleanCollection values()
          Returns a set view of the values contained in this map.
 
Methods inherited from class it.unimi.dsi.fastutil.objects.Object2BooleanFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, getBoolean, size
 
Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObject2BooleanFunction
get, put, put, remove, removeBoolean
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2BooleanFunction
defaultReturnValue, defaultReturnValue, getBoolean, put, removeBoolean
 
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
Constructor Detail

Object2BooleanMaps.EmptyMap

protected Object2BooleanMaps.EmptyMap()
Method Detail

containsValue

public boolean containsValue(boolean v)
Specified by:
containsValue in interface Object2BooleanMap<K>
See Also:
Map.containsValue(Object)

putAll

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

object2BooleanEntrySet

public ObjectSet<Object2BooleanMap.Entry<K>> object2BooleanEntrySet()
Description copied from interface: Object2BooleanMap
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 Object2BooleanMap.entrySet() so that it returns an ObjectSet of objects of type Object2BooleanMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:
object2BooleanEntrySet in interface Object2BooleanMap<K>
Returns:
a type-specific set view of the mappings contained in this map.
See Also:
Object2BooleanMap.entrySet()

keySet

public ObjectSet<K> keySet()
Description copied from interface: Object2BooleanMap
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 Object2BooleanMap<K>
Specified by:
keySet in interface Map<K,Boolean>
Returns:
a set view of the keys contained in this map.
See Also:
Map.keySet()

values

public BooleanCollection values()
Description copied from interface: Object2BooleanMap
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 Object2BooleanMap<K>
Specified by:
values in interface Map<K,Boolean>
Returns:
a set view of the values contained in this map.
See Also:
Map.values()

containsValue

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

clone

public Object clone()
Overrides:
clone in class Object2BooleanFunctions.EmptyFunction<K>

isEmpty

public boolean isEmpty()
Specified by:
isEmpty in interface Map<K,Boolean>

entrySet

public ObjectSet<Map.Entry<K,Boolean>> entrySet()
Description copied from interface: Object2BooleanMap
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 Object2BooleanMap<K>
Specified by:
entrySet in interface Map<K,Boolean>
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<K,Boolean>
Overrides:
hashCode in class Object

equals

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

toString

public String toString()
Overrides:
toString in class Object


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