Class NullIsExceptionPredicate

  • All Implemented Interfaces:
    java.io.Serializable, PredicateDecorator, Predicate

    public final class NullIsExceptionPredicate
    extends java.lang.Object
    implements Predicate, PredicateDecorator, java.io.Serializable
    Predicate implementation that throws an exception if the input is null.
    Since:
    Commons Collections 3.0
    Version:
    $Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
    See Also:
    Serialized Form
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean evaluate​(java.lang.Object object)
      Evaluates the predicate returning the result of the decorated predicate once a null check is performed.
      static Predicate getInstance​(Predicate predicate)
      Factory to create the null exception predicate.
      Predicate[] getPredicates()
      Gets the predicate being decorated.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • serialVersionUID

        private static final long serialVersionUID
        Serial version UID
        See Also:
        Constant Field Values
      • iPredicate

        private final Predicate iPredicate
        The predicate to decorate
    • Constructor Detail

      • NullIsExceptionPredicate

        public NullIsExceptionPredicate​(Predicate predicate)
        Constructor that performs no validation. Use getInstance if you want that.
        Parameters:
        predicate - the predicate to call after the null check
    • Method Detail

      • getInstance

        public static Predicate getInstance​(Predicate predicate)
        Factory to create the null exception predicate.
        Parameters:
        predicate - the predicate to decorate, not null
        Returns:
        the predicate
        Throws:
        java.lang.IllegalArgumentException - if the predicate is null
      • evaluate

        public boolean evaluate​(java.lang.Object object)
        Evaluates the predicate returning the result of the decorated predicate once a null check is performed.
        Specified by:
        evaluate in interface Predicate
        Parameters:
        object - the input object
        Returns:
        true if decorated predicate returns true
        Throws:
        FunctorException - if input is null
      • getPredicates

        public Predicate[] getPredicates()
        Gets the predicate being decorated.
        Specified by:
        getPredicates in interface PredicateDecorator
        Returns:
        the predicate as the only element in an array
        Since:
        Commons Collections 3.1