Package it.unimi.dsi.fastutil.longs

Class Long2LongMaps.UnmodifiableMap

java.lang.Object

it.unimi.dsi.fastutil.longs.AbstractLong2LongFunction

it.unimi.dsi.fastutil.longs.Long2LongFunctions.UnmodifiableFunction

it.unimi.dsi.fastutil.longs.Long2LongMaps.UnmodifiableMap

All Implemented Interfaces:

Function<Long,Long>, Long2LongFunction, Long2LongMap, Serializable, Function<Long,Long>, LongUnaryOperator, Map<Long,Long>

Direct Known Subclasses:

Long2LongSortedMaps.UnmodifiableSortedMap

Enclosing class:

Long2LongMaps

public static class Long2LongMaps.UnmodifiableMap
extends Long2LongFunctions.UnmodifiableFunction
implements Long2LongMap, Serializable

An unmodifiable wrapper class for maps.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.longs.Long2LongMap

Long2LongMap.Entry, Long2LongMap.FastEntrySet

Method Summary

Modifier and Type	Method	Description
long	compute(long key, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)	Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping).
Long	compute(Long key, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
long	computeIfAbsent(long key, LongUnaryOperator mappingFunction)	If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map.
Long	computeIfAbsent(Long key, Function<? super Long,? extends Long> mappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
long	computeIfAbsentNullable(long key, LongFunction<? extends Long> mappingFunction)	If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map unless it is null.
long	computeIfAbsentPartial(long key, Long2LongFunction mappingFunction)	If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map, unless the key is not present in the given mapping function.
long	computeIfPresent(long key, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)	If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.
Long	computeIfPresent(Long key, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
boolean	containsValue(long v)	Returns true if this map maps one or more keys to the specified value.
boolean	containsValue(Object ov)	Deprecated. Please use the corresponding type-specific method instead.
ObjectSet<Map.Entry<Long,Long>>	entrySet()	Deprecated. Please use the corresponding type-specific method instead.
boolean	equals(Object o)
void	forEach(BiConsumer<? super Long,? super Long> action)
long	getOrDefault(long key, long defaultValue)	Returns the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.
Long	getOrDefault(Object key, Long defaultValue)	Deprecated. Please use the corresponding type-specific method instead.
int	hashCode()
boolean	isEmpty()
LongSet	keySet()
ObjectSet<Long2LongMap.Entry>	long2LongEntrySet()	Returns a type-specific set view of the mappings contained in this map.
long	merge(long key, long value, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)	If the specified key is not already associated with a value, associates it with the given value.
Long	merge(Long key, Long value, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
void	putAll(Map<? extends Long,? extends Long> m)
long	putIfAbsent(long key, long 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.
Long	putIfAbsent(Long key, Long value)	Deprecated. Please use the corresponding type-specific method instead.
boolean	remove(long key, long value)	Removes the entry for the specified key only if it is currently mapped to the specified value.
boolean	remove(Object key, Object value)	Deprecated. Please use the corresponding type-specific method instead.
long	replace(long key, long value)	Replaces the entry for the specified key only if it is currently mapped to some value.
boolean	replace(long key, long oldValue, long newValue)	Replaces the entry for the specified key only if currently mapped to the specified value.
Long	replace(Long key, Long value)	Deprecated. Please use the corresponding type-specific method instead.
boolean	replace(Long key, Long oldValue, Long newValue)	Deprecated. Please use the corresponding type-specific method instead.
void	replaceAll(BiFunction<? super Long,? super Long,? extends Long> function)
LongCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.longs.Long2LongFunctions.UnmodifiableFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, get, put, put, remove, remove, size, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.Function

apply

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2LongFunction

applyAsLong, get, put, remove

Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2LongMap

clear, containsKey, containsKey, defaultReturnValue, defaultReturnValue, get, put, remove, size

Methods inherited from interface java.util.function.LongUnaryOperator

andThen, compose

Method Details

containsValue

public boolean containsValue(long v)

Description copied from interface: Long2LongMap

Returns true if this map maps one or more keys to the specified value.

Specified by:

containsValue in interface Long2LongMap

See Also:

Map.containsValue(Object)

containsValue

@Deprecated public boolean containsValue(Object ov)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

containsValue in interface Long2LongMap

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 Map.entrySet() so that it returns an ObjectSet of type-specific entries (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:

Map.entrySet()

entrySet

@Deprecated public ObjectSet<Map.Entry<Long,Long>> entrySet()

Deprecated.

Please use the corresponding type-specific method instead.

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()

keySet

public LongSet keySet()

Description copied from interface: Long2LongMap

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

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>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Long,Long>

Overrides:

hashCode in class Long2LongFunctions.UnmodifiableFunction

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Long,Long>

Overrides:

equals in class Long2LongFunctions.UnmodifiableFunction

getOrDefault

public long getOrDefault(long key, long defaultValue)

Description copied from interface: Long2LongMap

Returns the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.

Specified by:

getOrDefault in interface Long2LongMap

Parameters:

key - the key.

defaultValue - the default mapping of the key.

Returns:

the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.

See Also:

Map.getOrDefault(Object, Object)

forEach

public void forEach(BiConsumer<? super Long,? super Long> action)

Specified by:

forEach in interface Map<Long,Long>

replaceAll

public void replaceAll(BiFunction<? super Long,? super Long,? extends Long> function)

Specified by:

replaceAll in interface Map<Long,Long>

putIfAbsent

public long putIfAbsent(long key, long value)

Description copied from interface: Long2LongMap

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 interface Long2LongMap

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)

remove

public boolean remove(long key, long value)

Description copied from interface: Long2LongMap

Removes the entry for the specified key only if it is currently mapped to the specified value.

Specified by:

remove in interface Long2LongMap

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)

replace

public long replace(long key, long value)

Description copied from interface: Long2LongMap

Replaces the entry for the specified key only if it is currently mapped to some value.

Specified by:

replace in interface Long2LongMap

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)

replace

public boolean replace(long key, long oldValue, long newValue)

Description copied from interface: Long2LongMap

Replaces the entry for the specified key only if currently mapped to the specified value.

Specified by:

replace in interface Long2LongMap

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)

computeIfAbsent

public long computeIfAbsent(long key, LongUnaryOperator mappingFunction)

Description copied from interface: Long2LongMap

If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map.

Note that contrarily to the default computeIfAbsent(), it is not possible to not add a value for a given key, since the mappingFunction cannot return null. If such a behavior is needed, please use the corresponding nullable version.

Specified by:

computeIfAbsent in interface Long2LongMap

Parameters:

key - key with which the specified value is to be associated.

mappingFunction - the function to compute a value.

Returns:

the current (existing or computed) value associated with the specified key.

See Also:

Map.computeIfAbsent(Object, java.util.function.Function)

computeIfAbsentNullable

public long computeIfAbsentNullable(long key, LongFunction<? extends Long> mappingFunction)

Description copied from interface: Long2LongMap

If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map unless it is null.

Note that this version of computeIfAbsent() should be used only if you plan to return null in the mapping function.

Specified by:

computeIfAbsentNullable in interface Long2LongMap

Parameters:

key - key with which the specified value is to be associated.

mappingFunction - the function to compute a value.

Returns:

the current (existing or computed) value associated with the specified key, or the default return value if the computed value is null.

See Also:

Map.computeIfAbsent(Object, java.util.function.Function)

computeIfAbsentPartial

public long computeIfAbsentPartial(long key, Long2LongFunction mappingFunction)

Description copied from interface: Long2LongMap

If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map, unless the key is not present in the given mapping function.

This version of computeIfAbsent() uses a type-specific version of fastutil's Function. Since Function has a containsKey() method, it is possible to avoid adding a key by having containsKey() return false for that key.

Specified by:

computeIfAbsentPartial in interface Long2LongMap

Parameters:

key - key with which the specified value is to be associated.

mappingFunction - the function to compute a value.

Returns:

the current (existing or computed) value associated with the specified key.

See Also:

Map.computeIfAbsent(Object, java.util.function.Function)

computeIfPresent

public long computeIfPresent(long key, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Description copied from interface: Long2LongMap

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 interface Long2LongMap

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)

compute

public long compute(long key, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Description copied from interface: Long2LongMap

Attempts to compute a mapping for the specified key and its current mapped value (or null 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 interface Long2LongMap

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)

merge

public long merge(long key, long value, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Description copied from interface: Long2LongMap

If the specified key is not already associated with a value, associates it with the given value. Otherwise, replaces the associated value with the results of the given remapping function, or removes if the result is null.

Specified by:

merge in interface Long2LongMap

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)

getOrDefault

@Deprecated public Long getOrDefault(Object key, Long defaultValue)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

getOrDefault in interface Long2LongMap

Specified by:

getOrDefault in interface Map<Long,Long>

remove

@Deprecated public boolean remove(Object key, Object value)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

remove in interface Long2LongMap

Specified by:

remove in interface Map<Long,Long>

replace

@Deprecated public Long replace(Long key, Long value)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

replace in interface Long2LongMap

Specified by:

replace in interface Map<Long,Long>

replace

@Deprecated public boolean replace(Long key, Long oldValue, Long newValue)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

replace in interface Long2LongMap

Specified by:

replace in interface Map<Long,Long>

putIfAbsent

@Deprecated public Long putIfAbsent(Long key, Long value)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

putIfAbsent in interface Long2LongMap

Specified by:

putIfAbsent in interface Map<Long,Long>

computeIfAbsent

@Deprecated public Long computeIfAbsent(Long key, Function<? super Long,? extends Long> mappingFunction)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

computeIfAbsent in interface Long2LongMap

Specified by:

computeIfAbsent in interface Map<Long,Long>

computeIfPresent

@Deprecated public Long computeIfPresent(Long key, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

computeIfPresent in interface Long2LongMap

Specified by:

computeIfPresent in interface Map<Long,Long>

compute

@Deprecated public Long compute(Long key, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

compute in interface Long2LongMap

Specified by:

compute in interface Map<Long,Long>

merge

@Deprecated public Long merge(Long key, Long value, BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

merge in interface Long2LongMap

Specified by:

merge in interface Map<Long,Long>