org.apache.commons.collections4.functors

Class IfClosure<E>

    • Constructor Detail

      • IfClosure

        public IfClosure(Predicate<? super E> predicate,
                 Closure<? super E> trueClosure)
        Constructor that performs no validation. Use ifClosure if you want that.

        This constructor creates a closure that performs no action when the predicate is false.

        Parameters:
        predicate - predicate to switch on, not null
        trueClosure - closure used if true, not null
        Since:
        3.2

      • IfClosure

        public IfClosure(Predicate<? super E> predicate,
                 Closure<? super E> trueClosure,
                 Closure<? super E> falseClosure)
        Constructor that performs no validation. Use ifClosure if you want that.
        Parameters:
        predicate - predicate to switch on, not null
        trueClosure - closure used if true, not null
        falseClosure - closure used if false, not null

    • Method Detail

      • ifClosure

        public static <E> Closure<E> ifClosure(Predicate<? super E> predicate,
                                       Closure<? super E> trueClosure)
        Factory method that performs validation.

        This factory creates a closure that performs no action when the predicate is false.

        Type Parameters:
        E - the type that the closure acts on
        Parameters:
        predicate - predicate to switch on
        trueClosure - closure used if true
        Returns:
        the if closure
        Throws:
        NullPointerException - if either argument is null
        Since:
        3.2

      • ifClosure

        public static <E> Closure<E> ifClosure(Predicate<? super E> predicate,
                                       Closure<? super E> trueClosure,
                                       Closure<? super E> falseClosure)
        Factory method that performs validation.
        Type Parameters:
        E - the type that the closure acts on
        Parameters:
        predicate - predicate to switch on
        trueClosure - closure used if true
        falseClosure - closure used if false
        Returns:
        the if closure
        Throws:
        NullPointerException - if any argument is null

      • execute

        public void execute(E input)
        Executes the true or false closure according to the result of the predicate.
        Specified by:
        execute in interface  Closure<E>
        Parameters:
        input - the input object

      • getPredicate

        public Predicate<? super E> getPredicate()
        Gets the predicate.
        Returns:
        the predicate
        Since:
        3.1

      • getTrueClosure

        public Closure<? super E> getTrueClosure()
        Gets the closure called when true.
        Returns:
        the closure
        Since:
        3.1

      • getFalseClosure

        public Closure<? super E> getFalseClosure()
        Gets the closure called when false.
        Returns:
        the closure
        Since:
        3.1