Package it.unimi.dsi.fastutil.objects
Class Object2ObjectMaps.SynchronizedMap<K,V>
- java.lang.Object
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- it.unimi.dsi.fastutil.objects.Object2ObjectFunctions.SynchronizedFunction<K,V>
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- it.unimi.dsi.fastutil.objects.Object2ObjectMaps.SynchronizedMap<K,V>
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- All Implemented Interfaces:
Function<K,V>
,Object2ObjectFunction<K,V>
,Object2ObjectMap<K,V>
,java.io.Serializable
,java.util.function.Function<K,V>
,java.util.Map<K,V>
- Direct Known Subclasses:
Object2ObjectSortedMaps.SynchronizedSortedMap
- Enclosing class:
- Object2ObjectMaps
public static class Object2ObjectMaps.SynchronizedMap<K,V> extends Object2ObjectFunctions.SynchronizedFunction<K,V> implements Object2ObjectMap<K,V>, java.io.Serializable
A synchronized wrapper class for maps.- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.objects.Object2ObjectMap
Object2ObjectMap.Entry<K,V>, Object2ObjectMap.FastEntrySet<K,V>
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description V
compute(K key, java.util.function.BiFunction<? super K,? super V,? extends V> remappingFunction)
Attempts to compute a mapping for the specified key and its current mapped value (ornull
if there is no current mapping).V
computeIfPresent(K key, java.util.function.BiFunction<? super K,? super V,? extends V> remappingFunction)
If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.boolean
containsValue(java.lang.Object v)
ObjectSet<java.util.Map.Entry<K,V>>
entrySet()
Returns a set view of the mappings contained in this map.boolean
equals(java.lang.Object o)
void
forEach(java.util.function.BiConsumer<? super K,? super V> action)
V
getOrDefault(java.lang.Object key, V defaultValue)
Returns the value associated by this function to the specified key, or give the specified value if not present.int
hashCode()
boolean
isEmpty()
ObjectSet<K>
keySet()
V
merge(K key, V value, java.util.function.BiFunction<? super V,? super V,? extends V> remappingFunction)
If the specified key is not already associated with a value, associates it with the givenvalue
.ObjectSet<Object2ObjectMap.Entry<K,V>>
object2ObjectEntrySet()
Returns a type-specific set view of the mappings contained in this map.void
putAll(java.util.Map<? extends K,? extends V> m)
V
putIfAbsent(K key, V value)
If the specified key is not already associated with a value, associates it with the given value and returns the default return value, else returns the current value.boolean
remove(java.lang.Object key, java.lang.Object value)
Removes the entry for the specified key only if it is currently mapped to the specified value.V
replace(K key, V value)
Replaces the entry for the specified key only if it is currently mapped to some value.boolean
replace(K key, V oldValue, V newValue)
Replaces the entry for the specified key only if currently mapped to the specified value.void
replaceAll(java.util.function.BiFunction<? super K,? super V,? extends V> function)
ObjectCollection<V>
values()
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Methods inherited from class it.unimi.dsi.fastutil.objects.Object2ObjectFunctions.SynchronizedFunction
apply, clear, containsKey, defaultReturnValue, defaultReturnValue, get, put, remove, size, toString
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Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2ObjectFunction
andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get
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Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2ObjectMap
clear, computeIfAbsent, computeObjectIfAbsentPartial, containsKey, defaultReturnValue, defaultReturnValue, put, remove, size
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Method Detail
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containsValue
public boolean containsValue(java.lang.Object v)
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object2ObjectEntrySet
public ObjectSet<Object2ObjectMap.Entry<K,V>> object2ObjectEntrySet()
Description copied from interface:Object2ObjectMap
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
Map.entrySet()
so that it returns anObjectSet
of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).- Specified by:
object2ObjectEntrySet
in interfaceObject2ObjectMap<K,V>
- Returns:
- a type-specific set view of the mappings contained in this map.
- See Also:
Map.entrySet()
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entrySet
public ObjectSet<java.util.Map.Entry<K,V>> entrySet()
Returns a set view of the mappings contained in this map.
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keySet
public ObjectSet<K> keySet()
Description copied from interface:Object2ObjectMap
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values
public ObjectCollection<V> values()
Description copied from interface:Object2ObjectMap
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hashCode
public int hashCode()
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equals
public boolean equals(java.lang.Object o)
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getOrDefault
public V getOrDefault(java.lang.Object key, V defaultValue)
Description copied from interface:Object2ObjectFunction
Returns the value associated by this function to the specified key, or give the specified value if not present.- Specified by:
getOrDefault
in interfaceFunction<K,V>
- Specified by:
getOrDefault
in interfacejava.util.Map<K,V>
- Specified by:
getOrDefault
in interfaceObject2ObjectFunction<K,V>
- Specified by:
getOrDefault
in interfaceObject2ObjectMap<K,V>
- Overrides:
getOrDefault
in classObject2ObjectFunctions.SynchronizedFunction<K,V>
- Parameters:
key
- the key.defaultValue
- the value to return if not present.- Returns:
- the corresponding value, or
defaultValue
if no value was present for the given key. - See Also:
Function.getOrDefault(Object, Object)
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replaceAll
public void replaceAll(java.util.function.BiFunction<? super K,? super V,? extends V> function)
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putIfAbsent
public V putIfAbsent(K key, V value)
Description copied from interface:Object2ObjectMap
If the specified key is not already associated with a value, associates it with the given value and returns the default return value, else returns the current value.- Specified by:
putIfAbsent
in interfacejava.util.Map<K,V>
- Specified by:
putIfAbsent
in interfaceObject2ObjectMap<K,V>
- Parameters:
key
- key with which the specified value is to be associated.value
- value to be associated with the specified key.- Returns:
- the previous value associated with the specified key, or the default return value if there was no mapping for the key.
- See Also:
Map.putIfAbsent(Object, Object)
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remove
public boolean remove(java.lang.Object key, java.lang.Object value)
Description copied from interface:Object2ObjectMap
Removes the entry for the specified key only if it is currently mapped to the specified value.- Specified by:
remove
in interfacejava.util.Map<K,V>
- Specified by:
remove
in interfaceObject2ObjectMap<K,V>
- Parameters:
key
- key with which the specified value is associated.value
- value expected to be associated with the specified key.- Returns:
true
if the value was removed.- See Also:
Map.remove(Object, Object)
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replace
public V replace(K key, V value)
Description copied from interface:Object2ObjectMap
Replaces the entry for the specified key only if it is currently mapped to some value.- Specified by:
replace
in interfacejava.util.Map<K,V>
- Specified by:
replace
in interfaceObject2ObjectMap<K,V>
- Parameters:
key
- key with which the specified value is associated.value
- value to be associated with the specified key.- Returns:
- the previous value associated with the specified key, or the default return value if there was no mapping for the key.
- See Also:
Map.replace(Object, Object)
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replace
public boolean replace(K key, V oldValue, V newValue)
Description copied from interface:Object2ObjectMap
Replaces the entry for the specified key only if currently mapped to the specified value.- Specified by:
replace
in interfacejava.util.Map<K,V>
- Specified by:
replace
in interfaceObject2ObjectMap<K,V>
- Parameters:
key
- key with which the specified value is associated.oldValue
- value expected to be associated with the specified key.newValue
- value to be associated with the specified key.- Returns:
true
if the value was replaced.- See Also:
Map.replace(Object, Object, Object)
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computeIfPresent
public V computeIfPresent(K key, java.util.function.BiFunction<? super K,? super V,? extends V> remappingFunction)
Description copied from interface:Object2ObjectMap
If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.- Specified by:
computeIfPresent
in interfacejava.util.Map<K,V>
- Specified by:
computeIfPresent
in interfaceObject2ObjectMap<K,V>
- Parameters:
key
- key with which the specified value is to be associated.remappingFunction
- the function to compute a value.- Returns:
- the new value associated with the specified key, or the default return value if none.
- See Also:
Map.computeIfPresent(Object, java.util.function.BiFunction)
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compute
public V compute(K key, java.util.function.BiFunction<? super K,? super V,? extends V> remappingFunction)
Description copied from interface:Object2ObjectMap
Attempts to compute a mapping for the specified key and its current mapped value (ornull
if there is no current mapping).If the function returns
null
, the mapping is removed (or remains absent if initially absent). If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.- Specified by:
compute
in interfacejava.util.Map<K,V>
- Specified by:
compute
in interfaceObject2ObjectMap<K,V>
- Parameters:
key
- key with which the specified value is to be associated.remappingFunction
- the function to compute a value.- Returns:
- the new value associated with the specified key, or the default return value if none.
- See Also:
Map.compute(Object, java.util.function.BiFunction)
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merge
public V merge(K key, V value, java.util.function.BiFunction<? super V,? super V,? extends V> remappingFunction)
Description copied from interface:Object2ObjectMap
If the specified key is not already associated with a value, associates it with the givenvalue
. Otherwise, replaces the associated value with the results of the given remapping function, or removes if the result isnull
.- Specified by:
merge
in interfacejava.util.Map<K,V>
- Specified by:
merge
in interfaceObject2ObjectMap<K,V>
- Parameters:
key
- key with which the resulting value is to be associated.value
- the value to be merged with the existing value associated with the key or, if no existing value is associated with the key, to be associated with the key.remappingFunction
- the function to recompute a value if present.- Returns:
- the new value associated with the specified key, or the default return value if no value is associated with the key.
- See Also:
Map.merge(Object, Object, java.util.function.BiFunction)
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