org.apache.commons.collections4.functors

Class NonePredicate<T>

  • All Implemented Interfaces:
    Serializable, PredicateDecorator<T>, Predicate<T> 

    public final class NonePredicate<T>
extends AbstractQuantifierPredicate<T>
    Predicate implementation that returns true if none of the predicates return true. If the array of predicates is empty, then this predicate returns true.

    NOTE: In versions prior to 3.2 an array size of zero or one threw an exception.

    Since:
    3.0
    See Also:
    Serialized Form

    • Constructor Detail

      • NonePredicate

        public NonePredicate(Predicate<? super T>... predicates)
        Constructor that performs no validation. Use nonePredicate if you want that.
        Parameters:
        predicates - the predicates to check, not cloned, not null

    • Method Detail

      • nonePredicate

        public static <T> Predicate<T> nonePredicate(Predicate<? super T>... predicates)
        Factory to create the predicate.

        If the array is size zero, the predicate always returns true.

        Type Parameters:
        T - the type that the predicate queries
        Parameters:
        predicates - the predicates to check, cloned, not null
        Returns:
        the any predicate
        Throws:
        NullPointerException - if the predicates array is null
        NullPointerException - if any predicate in the array is null

      • nonePredicate

        public static <T> Predicate<T> nonePredicate(Collection<? extends Predicate<? super T>> predicates)
        Factory to create the predicate.

        If the collection is size zero, the predicate always returns true.

        Type Parameters:
        T - the type that the predicate queries
        Parameters:
        predicates - the predicates to check, cloned, not null
        Returns:
        the one predicate
        Throws:
        NullPointerException - if the predicates array is null
        NullPointerException - if any predicate in the array is null

      • evaluate

        public boolean evaluate(T object)
        Evaluates the predicate returning false if any stored predicate returns false.
        Parameters:
        object - the input object
        Returns:
        true if none of decorated predicates return true