Package org.apache.commons.functor.core.composite

Class CompositeUnaryFunction.Helper<X,​A,​T>

  • Type Parameters:
    A - argument type
    X - intermediate type
    T - return type
    All Implemented Interfaces:
    java.io.Serializable, Functor, UnaryFunction<A,​T>, UnaryFunctor<A>
    Enclosing class:
    CompositeUnaryFunction<A,​T>
    private static class CompositeUnaryFunction.Helper<X,​A,​T>
extends java.lang.Object
implements UnaryFunction<A,​T>, java.io.Serializable
    Encapsulates a double function evaluation.

    • Constructor Summary

      Constructors 
      Constructor Description
      Helper​(UnaryFunction<? super X,​? extends T> following, UnaryFunction<? super A,​? extends X> preceding)
      Create a new Helper.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean equals​(java.lang.Object obj)
      Indicates whether some other object is "equal to" this functor.
      private boolean equals​(CompositeUnaryFunction.Helper<?,​?,​?> helper)
      Checks if input helper is equals to this instance.
      T evaluate​(A obj)
      Evaluate this function.
      int hashCode()
      Returns a hash code for this functor adhering to the general Object.hashCode contract.
      java.lang.String toString()
      Returns a human readable description of this functor.

      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    • Field Detail

      • serialVersionUID

        private static final long serialVersionUID
        serialVersionUID declaration.
        See Also:
        Constant Field Values

      • following

        private UnaryFunction<? super X,​? extends T> following
        The last evaluator function.

      • preceding

        private UnaryFunction<? super A,​? extends X> preceding
        The first evaluator function.

    • Constructor Detail

      • Helper

        public Helper​(UnaryFunction<? super X,​? extends T> following,
              UnaryFunction<? super A,​? extends X> preceding)
        Create a new Helper.
        Parameters:
        following - UnaryFunction
        preceding - UnaryFunction

    • Method Detail

      • evaluate

        public T evaluate​(A obj)
        Evaluate this function.
        Specified by:
        evaluate in interface UnaryFunction<X,​A>
        Parameters:
        obj - the A object to evaluate
        Returns:
        the T result of this evaluation

      • equals

        public boolean equals​(java.lang.Object obj)
        Indicates whether some other object is "equal to" this functor. This method must adhere to general Object.equals contract. Additionally, this method can return true only if the specified Object implements the same functor interface and is known to produce the same results and/or side-effects for the same arguments (if any).

        While implementators are strongly encouraged to override the default Object implementation of this method, note that the default Object implementation does in fact adhere to the functor equals contract.

        Specified by:
        equals in interface Functor
        Overrides:
        equals in class java.lang.Object
        Parameters:
        obj - the object to compare this functor to
        Returns:
        true iff the given object implements this functor interface, and is known to produce the same results and/or side-effects for the same arguments (if any).
        See Also:
        Functor.hashCode()

      • equals

        private boolean equals​(CompositeUnaryFunction.Helper<?,​?,​?> helper)
        Checks if input helper is equals to this instance.
        Parameters:
        helper - the helper to check
        Returns:
        true, if helpers are equals, false otherwise

      • hashCode

        public int hashCode()
        Returns a hash code for this functor adhering to the general Object.hashCode contract. Implementators are strongly encouraged but not strictly required to override the default Object implementation of this method.
        Specified by:
        hashCode in interface Functor
        Overrides:
        hashCode in class java.lang.Object
        Returns:
        a hash code for this functor
        See Also:
        Functor.equals(java.lang.Object)

      • toString

        public java.lang.String toString()
        Returns a human readable description of this functor. Implementators are strongly encouraged but not strictly required to override the default Object implementation of this method.
        Specified by:
        toString in interface Functor
        Overrides:
        toString in class java.lang.Object
        Returns:
        a human readable description of this functor