org.apache.commons.collections4.functors

## Class TransformerClosure<E>

- java.lang.Object
- - org.apache.commons.collections4.functors.TransformerClosure<E>

- All Implemented Interfaces:
    Serializable, Closure<E>

      public class TransformerClosure<E>
      extends Object
      implements Closure<E>, Serializable

  Closure implementation that calls a Transformer using the input object and ignore the result.
  Since:
    3.0
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `TransformerClosure(Transformer<? super E,?> transformer)` Constructor that performs no validation.

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `execute(E input)` Executes the closure by calling the decorated transformer.
    `Transformer<? super E,?>` | `getTransformer()` Gets the transformer.
    `static <E> Closure<E>` | `transformerClosure(Transformer<? super E,?> transformer)` Factory method that performs validation.

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### TransformerClosure

          public TransformerClosure(Transformer<? super E,?> transformer)

      Constructor that performs no validation. Use `transformerClosure` if you want that.
      Parameters:
        `transformer` - the transformer to call, not null

  - ### Method Detail

    - #### transformerClosure

          public static <E> Closure<E> transformerClosure(Transformer<? super E,?> transformer)

      Factory method that performs validation.

      A null transformer will return the `NOPClosure`.

      Type Parameters:
        `E` - the type that the closure acts on
      Parameters:
        `transformer` - the transformer to call, null means nop
      Returns:
        the `transformer` closure

    - #### execute

          public void execute(E input)

      Executes the closure by calling the decorated transformer.
      Specified by:
        `execute` in interface `Closure<E>`
      Parameters:
        `input` - the input object

    - #### getTransformer

          public Transformer<? super E,?> getTransformer()

      Gets the transformer.
      Returns:
        the transformer
      Since:
        3.1

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