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

Class Not

  • All Implemented Interfaces:
    java.io.Serializable, Functor, NullaryFunctor, Predicate
    public final class Not
extends java.lang.Object
implements Predicate, java.io.Serializable
    Tests to the logical inverse of some other predicate.

    Note that although this class implements Serializable, a given instance will only be truly Serializable if the underlying functor is. Attempts to serialize an instance whose delegate is not Serializable will result in an exception.

    Version:
    $Revision$ $Date$
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private Predicate predicate
      The adapted predicate has to be negated.
      private static long serialVersionUID
      serialVersionUID declaration.

    • Constructor Summary

      Constructors 
      Constructor Description
      Not​(Predicate predicate)
      Create a new Not.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean equals​(java.lang.Object that)
      Indicates whether some other object is "equal to" this functor.
      boolean equals​(Not that)
      Learn whether another Not is equal to this.
      int hashCode()
      Returns a hash code for this functor adhering to the general Object.hashCode contract.
      static Predicate not​(Predicate that)
      Get a Not instance for that.
      boolean test()
      Evaluate this predicate.
      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

      • predicate

        private final Predicate predicate
        The adapted predicate has to be negated.

    • Constructor Detail

      • Not

        public Not​(Predicate predicate)
        Create a new Not.
        Parameters:
        predicate - Predicate to negate

    • Method Detail

      • test

        public boolean test()
        Evaluate this predicate.
        Specified by:
        test in interface Predicate
        Returns:
        the result of this test

      • equals

        public boolean equals​(java.lang.Object that)
        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:
        that - 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 boolean equals​(Not that)
        Learn whether another Not is equal to this.
        Parameters:
        that - the Not to test
        Returns:
        boolean

      • 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

      • not

        public static Predicate not​(Predicate that)
        Get a Not instance for that.
        Parameters:
        that - Predicate to negate
        Returns:
        Not