Class UniquePredicate<T>

    • Constructor Detail

      • UniquePredicate

        public UniquePredicate()
        Constructor that performs no validation. Use uniquePredicate if you want that.
    • Method Detail

      • uniquePredicate

        public static <T> Predicate<T> uniquePredicate()
        Factory to create the predicate.
        Type Parameters:
        T - the type that the predicate queries
        the predicate
        IllegalArgumentException - if the predicate is null
      • evaluate

        public boolean evaluate​(T object)
        Evaluates the predicate returning true if the input object hasn't been received yet.
        Specified by:
        evaluate in interface Predicate<T>
        object - the input object
        true if this is the first time the object is seen