Package org.apache.commons.collections4.functors

Class ClosureTransformer<T>

  • Type Parameters:
    T - the type of the input and result to the function.
    All Implemented Interfaces:
    java.io.Serializable, java.util.function.Function<T,​T>, Transformer<T,​T>
    public class ClosureTransformer<T>
extends java.lang.Object
implements Transformer<T,​T>, java.io.Serializable
    Transformer implementation that calls a Closure using the input object and then returns the input.
    Since:
    3.0
    See Also:
    Serialized Form

    • Constructor Summary

      Constructors 
      Constructor Description
      ClosureTransformer​(Closure<? super T> closure)
      Constructor that performs no validation.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static <T> Transformer<T,​T> closureTransformer​(Closure<? super T> closure)
      Factory method that performs validation.
      Closure<? super T> getClosure()
      Gets the closure.
      T transform​(T input)
      Transforms the input to result by executing a closure.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

      • Methods inherited from interface java.util.function.Function

        andThen, compose

      • Methods inherited from interface org.apache.commons.collections4.Transformer

        apply

    • Constructor Detail

      • ClosureTransformer

        public ClosureTransformer​(Closure<? super T> closure)
        Constructor that performs no validation. Use closureTransformer if you want that.
        Parameters:
        closure - the closure to call, not null

    • Method Detail

      • closureTransformer

        public static <T> Transformer<T,​T> closureTransformer​(Closure<? super T> closure)
        Factory method that performs validation.
        Type Parameters:
        T - the type of the object to transform
        Parameters:
        closure - the closure to call, not null
        Returns:
        the closure transformer
        Throws:
        java.lang.NullPointerException - if the closure is null

      • getClosure

        public Closure<? super T> getClosure()
        Gets the closure.
        Returns:
        the closure
        Since:
        3.1

      • transform

        public T transform​(T input)
        Transforms the input to result by executing a closure.
        Specified by:
        transform in interface Transformer<T,​T>
        Parameters:
        input - the input object to transform
        Returns:
        the transformed result