Package it.unimi.dsi.fastutil.bytes

Class Byte2ReferenceMaps.UnmodifiableMap<V>

java.lang.Object

it.unimi.dsi.fastutil.bytes.AbstractByte2ReferenceFunction<V>

it.unimi.dsi.fastutil.bytes.Byte2ReferenceFunctions.UnmodifiableFunction<V>

it.unimi.dsi.fastutil.bytes.Byte2ReferenceMaps.UnmodifiableMap<V>

All Implemented Interfaces:

Byte2ReferenceFunction<V>, Byte2ReferenceMap<V>, Function<Byte,V>, Serializable, Function<Byte,V>, IntFunction<V>, Map<Byte,V>

Direct Known Subclasses:

Byte2ReferenceSortedMaps.UnmodifiableSortedMap

Enclosing class:

Byte2ReferenceMaps

public static class Byte2ReferenceMaps.UnmodifiableMap<V>
extends Byte2ReferenceFunctions.UnmodifiableFunction<V>
implements Byte2ReferenceMap<V>, Serializable

An unmodifiable wrapper class for maps.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.bytes.Byte2ReferenceMap

Byte2ReferenceMap.Entry<V>, Byte2ReferenceMap.FastEntrySet<V>

Method Summary

Modifier and Type	Method	Description
ObjectSet<Byte2ReferenceMap.Entry<V>>	byte2ReferenceEntrySet()	Returns a type-specific set view of the mappings contained in this map.
V	compute(byte key, BiFunction<? super Byte,? super V,? extends V> remappingFunction)	Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping).
V	compute(Byte key, BiFunction<? super Byte,? super V,? extends V> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
V	computeIfAbsent(byte key, Byte2ReferenceFunction<? extends V> 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.
V	computeIfAbsent(byte key, IntFunction<? extends V> 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.
V	computeIfAbsent(Byte key, Function<? super Byte,? extends V> mappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
V	computeIfPresent(byte key, BiFunction<? super Byte,? 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.
V	computeIfPresent(Byte key, BiFunction<? super Byte,? super V,? extends V> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
boolean	containsValue(Object v)
ObjectSet<Map.Entry<Byte,V>>	entrySet()	Deprecated. Please use the corresponding type-specific method instead.
boolean	equals(Object o)
void	forEach(BiConsumer<? super Byte,? super V> action)
V	getOrDefault(byte key, V defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
V	getOrDefault(Object key, V defaultValue)	Deprecated. Please use the corresponding type-specific method instead.
int	hashCode()
boolean	isEmpty()
ByteSet	keySet()
V	merge(byte key, V value, BiFunction<? super V,? super V,? extends V> remappingFunction)	If the specified key is not already associated with a value, associates it with the given value.
V	merge(Byte key, V value, BiFunction<? super V,? super V,? extends V> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
void	putAll(Map<? extends Byte,? extends V> m)
V	putIfAbsent(byte 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.
V	putIfAbsent(Byte key, V value)	Deprecated. Please use the corresponding type-specific method instead.
boolean	remove(byte key, Object 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.
V	replace(byte key, V value)	Replaces the entry for the specified key only if it is currently mapped to some value.
boolean	replace(byte key, V oldValue, V newValue)	Replaces the entry for the specified key only if currently mapped to the specified value.
V	replace(Byte key, V value)	Deprecated. Please use the corresponding type-specific method instead.
boolean	replace(Byte key, V oldValue, V newValue)	Deprecated. Please use the corresponding type-specific method instead.
void	replaceAll(BiFunction<? super Byte,? super V,? extends V> function)
ReferenceCollection<V>	values()

Methods inherited from class it.unimi.dsi.fastutil.bytes.Byte2ReferenceFunctions.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.bytes.Byte2ReferenceFunction

andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, apply, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get, put, remove

Methods inherited from interface it.unimi.dsi.fastutil.bytes.Byte2ReferenceMap

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

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

apply

Methods inherited from interface java.util.function.Function

andThen

Method Details

containsValue

public boolean containsValue(Object v)

Specified by:

containsValue in interface Map<Byte,V>

putAll

public void putAll(Map<? extends Byte,? extends V> m)

Specified by:

putAll in interface Map<Byte,V>

byte2ReferenceEntrySet

public ObjectSet<Byte2ReferenceMap.Entry<V>> byte2ReferenceEntrySet()

Description copied from interface: Byte2ReferenceMap

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:

byte2ReferenceEntrySet in interface Byte2ReferenceMap<V>

Returns:

a type-specific set view of the mappings contained in this map.

See Also:

• Map.entrySet()

entrySet

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

Deprecated.

Please use the corresponding type-specific method instead.

Returns a set view of the mappings contained in this map.

Specified by:

entrySet in interface Byte2ReferenceMap<V>

Specified by:

entrySet in interface Map<Byte,V>

Returns:

a set view of the mappings contained in this map.

See Also:

• Map.entrySet()

keySet

public ByteSet keySet()

Description copied from interface: Byte2ReferenceMap

Specified by:

keySet in interface Byte2ReferenceMap<V>

Specified by:

keySet in interface Map<Byte,V>

Returns:

a set view of the keys contained in this map.

See Also:

• Map.keySet()

values

public ReferenceCollection<V> values()

Description copied from interface: Byte2ReferenceMap

Specified by:

values in interface Byte2ReferenceMap<V>

Specified by:

values in interface Map<Byte,V>

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<Byte,V>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Byte,V>

Overrides:

hashCode in class Byte2ReferenceFunctions.UnmodifiableFunction<V>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Byte,V>

Overrides:

equals in class Byte2ReferenceFunctions.UnmodifiableFunction<V>

getOrDefault

public V getOrDefault(byte key,
 V defaultValue)

Description copied from interface: Byte2ReferenceFunction

Returns the value associated by this function to the specified key, or give the specified value if not present.

Specified by:

getOrDefault in interface Byte2ReferenceFunction<V>

Specified by:

getOrDefault in interface Byte2ReferenceMap<V>

Overrides:

getOrDefault in class Byte2ReferenceFunctions.UnmodifiableFunction<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)

forEach

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

Specified by:

forEach in interface Byte2ReferenceMap<V>

Specified by:

forEach in interface Map<Byte,V>

replaceAll

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

Specified by:

replaceAll in interface Map<Byte,V>

putIfAbsent

public V putIfAbsent(byte key,
 V value)

Description copied from interface: Byte2ReferenceMap

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 Byte2ReferenceMap<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)

remove

public boolean remove(byte key,
 Object value)

Description copied from interface: Byte2ReferenceMap

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

Specified by:

remove in interface Byte2ReferenceMap<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)

replace

public V replace(byte key,
 V value)

Description copied from interface: Byte2ReferenceMap

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

Specified by:

replace in interface Byte2ReferenceMap<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)

replace

public boolean replace(byte key,
 V oldValue,
 V newValue)

Description copied from interface: Byte2ReferenceMap

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

Specified by:

replace in interface Byte2ReferenceMap<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)

computeIfAbsent

public V computeIfAbsent(byte key,
 IntFunction<? extends V> mappingFunction)

Description copied from interface: Byte2ReferenceMap

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 Byte2ReferenceMap<V>

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)

computeIfAbsent

public V computeIfAbsent(byte key,
 Byte2ReferenceFunction<? extends V> mappingFunction)

Description copied from interface: Byte2ReferenceMap

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:

computeIfAbsent in interface Byte2ReferenceMap<V>

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 V computeIfPresent(byte key,
 BiFunction<? super Byte,? super V,? extends V> remappingFunction)

Description copied from interface: Byte2ReferenceMap

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 Byte2ReferenceMap<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)

compute

public V compute(byte key,
 BiFunction<? super Byte,? super V,? extends V> remappingFunction)

Description copied from interface: Byte2ReferenceMap

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 Byte2ReferenceMap<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)

merge

public V merge(byte key,
 V value,
 BiFunction<? super V,? super V,? extends V> remappingFunction)

Description copied from interface: Byte2ReferenceMap

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 Byte2ReferenceMap<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)

getOrDefault

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

Deprecated.

Please use the corresponding type-specific method instead.

Returns the value associated by this function to the specified key, or give the specified value if not present.

Specified by:

getOrDefault in interface Byte2ReferenceFunction<V>

Specified by:

getOrDefault in interface Byte2ReferenceMap<V>

Specified by:

getOrDefault in interface Function<Byte,V>

Specified by:

getOrDefault in interface Map<Byte,V>

Overrides:

getOrDefault in class Byte2ReferenceFunctions.UnmodifiableFunction<V>

Parameters:

key - the key.

defaultValue - the default value to return if not present.

Returns:

the corresponding value, or defaultValue if no value was present for the given key.

See Also:

• Map.getOrDefault(Object, Object)

remove

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

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

remove in interface Map<Byte,V>

replace

@Deprecated
public V replace(Byte key,
 V value)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

replace in interface Map<Byte,V>

replace

@Deprecated
public boolean replace(Byte key,
 V oldValue,
 V newValue)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

replace in interface Map<Byte,V>

putIfAbsent

@Deprecated
public V putIfAbsent(Byte key,
 V value)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

putIfAbsent in interface Map<Byte,V>

computeIfAbsent

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

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

computeIfAbsent in interface Map<Byte,V>

computeIfPresent

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

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

computeIfPresent in interface Map<Byte,V>

compute

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

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

compute in interface Map<Byte,V>

merge

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

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

merge in interface Map<Byte,V>