Class Object2LongFunctions.UnmodifiableFunction<K>

java.lang.Object
it.unimi.dsi.fastutil.objects.AbstractObject2LongFunction<K>
it.unimi.dsi.fastutil.objects.Object2LongFunctions.UnmodifiableFunction<K>
All Implemented Interfaces:
Function<K,Long>, Object2LongFunction<K>, Serializable, Function<K,Long>, ToLongFunction<K>
Direct Known Subclasses:
Object2LongMaps.UnmodifiableMap
Enclosing class:
Object2LongFunctions

public static class Object2LongFunctions.UnmodifiableFunction<K> extends AbstractObject2LongFunction<K> implements Serializable
An unmodifiable wrapper class for functions.
See Also:
  • Method Details Link icon

    • size Link icon

      public int size()
      Description copied from interface: Function
      Returns the intended number of keys in this function, or -1 if no such number exists.

      Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible. This default implementation, in particular, returns -1.

      Specified by:
      size in interface Function<K,Long>
      Returns:
      the intended number of keys in this function, or -1 if that number is not available.
    • defaultReturnValue Link icon

      public long defaultReturnValue()
      Description copied from interface: Object2LongFunction
      Gets the default return value.

      This default implementation just return the default null value of the type (null for objects, 0 for scalars, false for Booleans).

      Specified by:
      defaultReturnValue in interface Object2LongFunction<K>
      Overrides:
      defaultReturnValue in class AbstractObject2LongFunction<K>
      Returns:
      the current default return value.
    • defaultReturnValue Link icon

      public void defaultReturnValue(long defRetValue)
      Description copied from interface: Object2LongFunction
      Sets the default return value (optional operation). This value must be returned by type-specific versions of get(), put() and remove() to denote that the map does not contain the specified key. It must be 0/false/null by default.
      Specified by:
      defaultReturnValue in interface Object2LongFunction<K>
      Overrides:
      defaultReturnValue in class AbstractObject2LongFunction<K>
      Parameters:
      defRetValue - the new default return value.
      See Also:
    • containsKey Link icon

      public boolean containsKey(Object k)
      Description copied from interface: Function
      Returns true if this function contains a mapping for the specified key.

      Note that for some kind of functions (e.g., hashes) this method will always return true. This default implementation, in particular, always return true.

      Specified by:
      containsKey in interface Function<K,Long>
      Parameters:
      k - the key.
      Returns:
      true if this function associates a value to key.
      See Also:
    • put Link icon

      public long put(K k, long v)
      Description copied from interface: Object2LongFunction
      Adds a pair to the map (optional operation).
      Specified by:
      put in interface Object2LongFunction<K>
      Parameters:
      k - the key.
      v - the value.
      Returns:
      the old value, or the default return value if no value was present for the given key.
      See Also:
    • getLong Link icon

      public long getLong(Object k)
      Description copied from interface: Object2LongFunction
      Returns the value to which the given key is mapped.
      Specified by:
      getLong in interface Object2LongFunction<K>
      Parameters:
      k - the key.
      Returns:
      the corresponding value, or the default return value if no value was present for the given key.
      See Also:
    • getOrDefault Link icon

      public long getOrDefault(Object k, long defaultValue)
      Description copied from interface: Object2LongFunction
      Returns the value associated by this function to the specified key, or give the specified value if not present.
      Specified by:
      getOrDefault in interface Object2LongFunction<K>
      Parameters:
      k - 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:
    • removeLong Link icon

      public long removeLong(Object k)
      Description copied from interface: Object2LongFunction
      Removes the mapping with the given key (optional operation).
      Specified by:
      removeLong in interface Object2LongFunction<K>
      Parameters:
      k - the key.
      Returns:
      the old value, or the default return value if no value was present for the given key.
      See Also:
    • clear Link icon

      public void clear()
      Description copied from interface: Function
      Removes all associations from this function (optional operation).
      Specified by:
      clear in interface Function<K,Long>
      See Also:
    • put Link icon

      @Deprecated public Long put(K k, Long v)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Associates the specified value with the specified key in this function (optional operation).
      Specified by:
      put in interface Function<K,Long>
      Specified by:
      put in interface Object2LongFunction<K>
      Parameters:
      k - the key.
      v - the value.
      Returns:
      the old value, or null if no value was present for the given key.
      See Also:
    • get Link icon

      @Deprecated public Long get(Object k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Returns the value associated by this function to the specified key.
      Specified by:
      get in interface Function<K,Long>
      Specified by:
      get in interface Object2LongFunction<K>
      Parameters:
      k - the key.
      Returns:
      the corresponding value, or null if no value was present for the given key.
      See Also:
    • getOrDefault Link icon

      @Deprecated public Long getOrDefault(Object k, Long 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 Function<K,Long>
      Specified by:
      getOrDefault in interface Object2LongFunction<K>
      Parameters:
      k - 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:
    • remove Link icon

      @Deprecated public Long remove(Object k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Removes this key and the associated value from this function if it is present (optional operation).
      Specified by:
      remove in interface Function<K,Long>
      Specified by:
      remove in interface Object2LongFunction<K>
      Parameters:
      k - the key.
      Returns:
      the old value, or null if no value was present for the given key.
      See Also:
    • hashCode Link icon

      public int hashCode()
      Overrides:
      hashCode in class Object
    • equals Link icon

      public boolean equals(Object o)
      Overrides:
      equals in class Object
    • toString Link icon

      public String toString()
      Overrides:
      toString in class Object