Class CompositeUnaryFunction.Helper<X,A,T>

java.lang.Object
org.apache.commons.functor.core.composite.CompositeUnaryFunction.Helper<X,A,T>
Type Parameters:
X - intermediate type
A - argument type
T - return type
All Implemented Interfaces:
Serializable, Functor, UnaryFunction<A,T>, UnaryFunctor<A>
Enclosing class:
CompositeUnaryFunction<A,T>
private static class CompositeUnaryFunction.Helper<X,A,T> extends Object implements UnaryFunction<A,T>, Serializable
Encapsulates a double function evaluation.
Version:
$Revision$ $Date$

  • Field Details

    • serialVersionUID

      private static final long serialVersionUID
      serialVersionUID declaration.
      See Also:

    • 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 Details

    • Helper

      public Helper(UnaryFunction<? super X, ? extends T> following, UnaryFunction<? super A, ? extends X> preceding)
      Create a new Helper.
      Parameters:
      following - UnaryFunctioninvalid input: '<'X, Y>
      preceding - UnaryFunctioninvalid input: '<'Y, Z>

  • Method Details

    • 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(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 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:

    • 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 Object
      Returns:
      a hash code for this functor
      See Also:

    • toString

      public 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 Object
      Returns:
      a human readable description of this functor