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

Class TransformedFunction<T>

  • Type Parameters:
    T - the returned value type.
    All Implemented Interfaces:
    java.io.Serializable, Function<T>, Functor, NullaryFunctor
    public class TransformedFunction<T>
extends java.lang.Object
implements Function<T>, java.io.Serializable
    A Function whose result is then run through a UnaryFunction.
    Version:
    $Revision$ $Date$
    See Also:
    Serialized Form

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      private static class  TransformedFunction.Helper<X,​T>
      Type-remembering 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.
      boolean equals​(TransformedFunction<?> that)
      Learn whether another TransformedFunction is equal to this.
      T evaluate()
      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

    • Constructor Detail

      • TransformedFunction

        public TransformedFunction​(Function<? extends X> preceding,
                           UnaryFunction<? super X,​? extends T> following)
        Create a new TransformedFunction.
        Type Parameters:
        X - the preceding function argument type.
        Parameters:
        preceding - Function
        following - UnaryFunction

    • Method Detail

      • evaluate

        public final T evaluate()
        Evaluate this function.
        Specified by:
        evaluate in interface Function<T>
        Returns:
        the T result of this evaluation

      • equals

        public final 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

        public final boolean equals​(TransformedFunction<?> that)
        Learn whether another TransformedFunction is equal to this.
        Parameters:
        that - instance to test
        Returns:
        whether equal

      • 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