Class Object2ObjectFunctions.SynchronizedFunction<K,​V>

    • Method Detail

      • size

        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,​V>
        Returns:
        the intended number of keys in this function, or -1 if that number is not available.
      • defaultReturnValue

        public V defaultReturnValue()
        Description copied from interface: Object2ObjectFunction
        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 Object2ObjectFunction<K,​V>
        Returns:
        the current default return value.
      • defaultReturnValue

        public void defaultReturnValue​(V defRetValue)
        Description copied from interface: Object2ObjectFunction
        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 Object2ObjectFunction<K,​V>
        Parameters:
        defRetValue - the new default return value.
        See Also:
        Object2ObjectFunction.defaultReturnValue()
      • containsKey

        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,​V>
        Parameters:
        k - the key.
        Returns:
        true if this function associates a value to key.
        See Also:
        Map.containsKey(Object)
      • clear

        public void clear()
        Description copied from interface: Function
        Removes all associations from this function (optional operation).
        Specified by:
        clear in interface Function<K,​V>
        See Also:
        Map.clear()
      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object