Package it.unimi.dsi.fastutil.longs

Class Long2ObjectMaps.UnmodifiableMap<V>

java.lang.Object
it.unimi.dsi.fastutil.longs.AbstractLong2ObjectFunction<V>
it.unimi.dsi.fastutil.longs.Long2ObjectFunctions.UnmodifiableFunction<V>
it.unimi.dsi.fastutil.longs.Long2ObjectMaps.UnmodifiableMap<V>
All Implemented Interfaces:
Function<Long,​V>, Long2ObjectFunction<V>, Long2ObjectMap<V>, Serializable, Function<Long,​V>, LongFunction<V>, Map<Long,​V>
Direct Known Subclasses:
Long2ObjectSortedMaps.UnmodifiableSortedMap
Enclosing class:
Long2ObjectMaps
public static class Long2ObjectMaps.UnmodifiableMap<V>
extends Long2ObjectFunctions.UnmodifiableFunction<V>
implements Long2ObjectMap<V>, Serializable
An unmodifiable wrapper class for maps.
See Also:
Serialized Form

  • Method Details

    • containsValue

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

    • putAll

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

    • long2ObjectEntrySet

      public ObjectSet<Long2ObjectMap.Entry<V>> long2ObjectEntrySet()
      Description copied from interface: Long2ObjectMap
      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:
      long2ObjectEntrySet in interface Long2ObjectMap<V>
      Returns:
      a type-specific set view of the mappings contained in this map.
      See Also:
      Map.entrySet()

    • entrySet

      @Deprecated public ObjectSet<Map.Entry<Long,​V>> 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 Long2ObjectMap<V>
      Specified by:
      entrySet in interface Map<Long,​V>
      Returns:
      a set view of the mappings contained in this map.
      See Also:
      Map.entrySet()

    • keySet

      public LongSet keySet()
      Description copied from interface: Long2ObjectMap

      Note that this specification strengthens the one given in Map.keySet().

      Specified by:
      keySet in interface Long2ObjectMap<V>
      Specified by:
      keySet in interface Map<Long,​V>
      Returns:
      a set view of the keys contained in this map.
      See Also:
      Map.keySet()

    • values

      public ObjectCollection<V> values()
      Description copied from interface: Long2ObjectMap

      Note that this specification strengthens the one given in Map.values().

      Specified by:
      values in interface Long2ObjectMap<V>
      Specified by:
      values in interface Map<Long,​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<Long,​V>

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in interface Map<Long,​V>
      Overrides:
      hashCode in class Long2ObjectFunctions.UnmodifiableFunction<V>

    • equals

      public boolean equals​(Object o)
      Specified by:
      equals in interface Map<Long,​V>
      Overrides:
      equals in class Long2ObjectFunctions.UnmodifiableFunction<V>

    • getOrDefault

      public V getOrDefault​(long key, V defaultValue)
      Description copied from interface: Long2ObjectMap
      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 Long2ObjectMap<V>
      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 V> action)
      Specified by:
      forEach in interface Map<Long,​V>

    • replaceAll

      public void replaceAll​(BiFunction<? super Long,​? super V,​? extends V> function)
      Specified by:
      replaceAll in interface Map<Long,​V>

    • putIfAbsent

      public V putIfAbsent​(long key, V value)
      Description copied from interface: Long2ObjectMap
      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 Long2ObjectMap<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​(long key, Object value)
      Description copied from interface: Long2ObjectMap
      Removes the entry for the specified key only if it is currently mapped to the specified value.
      Specified by:
      remove in interface Long2ObjectMap<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​(long key, V value)
      Description copied from interface: Long2ObjectMap
      Replaces the entry for the specified key only if it is currently mapped to some value.
      Specified by:
      replace in interface Long2ObjectMap<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​(long key, V oldValue, V newValue)
      Description copied from interface: Long2ObjectMap
      Replaces the entry for the specified key only if currently mapped to the specified value.
      Specified by:
      replace in interface Long2ObjectMap<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​(long key, LongFunction<? extends V> mappingFunction)
      Description copied from interface: Long2ObjectMap
      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 Long2ObjectMap<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)

    • computeIfAbsentPartial

      public V computeIfAbsentPartial​(long key, Long2ObjectFunction<? extends V> mappingFunction)
      Description copied from interface: Long2ObjectMap
      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 Long2ObjectMap<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​(long key, BiFunction<? super Long,​? super V,​? extends V> remappingFunction)
      Description copied from interface: Long2ObjectMap
      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 Long2ObjectMap<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​(long key, BiFunction<? super Long,​? super V,​? extends V> remappingFunction)
      Description copied from interface: Long2ObjectMap
      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 Long2ObjectMap<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​(long key, V value, BiFunction<? super V,​? super V,​? extends V> remappingFunction)
      Description copied from interface: Long2ObjectMap
      If the specified key is not already associated with a value or is associated with null, associates it with the given non-null 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 Long2ObjectMap<V>
      Parameters:
      key - key with which the resulting value is to be associated.
      value - the non-null 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.

      This default implementation just delegates to the corresponding Map method.

      Specified by:
      getOrDefault in interface Long2ObjectMap<V>
      Specified by:
      getOrDefault in interface Map<Long,​V>

    • 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 Long2ObjectMap<V>
      Specified by:
      remove in interface Map<Long,​V>

    • replace

      @Deprecated public V replace​(Long key, V 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 Long2ObjectMap<V>
      Specified by:
      replace in interface Map<Long,​V>

    • replace

      @Deprecated public boolean replace​(Long key, V oldValue, V 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 Long2ObjectMap<V>
      Specified by:
      replace in interface Map<Long,​V>

    • putIfAbsent

      @Deprecated public V putIfAbsent​(Long key, V 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 Long2ObjectMap<V>
      Specified by:
      putIfAbsent in interface Map<Long,​V>

    • computeIfAbsent

      @Deprecated public V computeIfAbsent​(Long key, Function<? super Long,​? extends V> 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 Long2ObjectMap<V>
      Specified by:
      computeIfAbsent in interface Map<Long,​V>

    • computeIfPresent

      @Deprecated public V computeIfPresent​(Long key, BiFunction<? super Long,​? super V,​? extends V> 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 Long2ObjectMap<V>
      Specified by:
      computeIfPresent in interface Map<Long,​V>

    • compute

      @Deprecated public V compute​(Long key, BiFunction<? super Long,​? super V,​? extends V> 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 Long2ObjectMap<V>
      Specified by:
      compute in interface Map<Long,​V>

    • merge

      @Deprecated public V merge​(Long key, V value, BiFunction<? super V,​? super V,​? extends V> 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 Long2ObjectMap<V>
      Specified by:
      merge in interface Map<Long,​V>