org.apache.commons.collections4.functors

## Class CatchAndRethrowClosure<E>

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

- All Implemented Interfaces:
    Closure<E>

      public abstract class CatchAndRethrowClosure<E>
      extends Object
      implements Closure<E>

  `Closure` that catches any checked exception and re-throws it as a `FunctorException` runtime exception. Example usage:

       // Create a catch and re-throw closure via anonymous subclass
       CatchAndRethrowClosure<String> writer = new ThrowingClosure() {
           private java.io.Writer out = // some writer

           protected void executeAndThrow(String input) throws IOException {
               out.write(input); // throwing of IOException allowed
           }
       };

       // use catch and re-throw closure
       java.util.List<String> strList = // some list
       try {
           CollectionUtils.forAllDo(strList, writer);
       } catch (FunctorException ex) {
           Throwable originalError = ex.getCause();
           // handle error
       }

  Since:
    4.0

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `CatchAndRethrowClosure()`

  - ### Method Summary

    All Methods Instance Methods Abstract Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `execute(E input)` Execute this closure on the specified input object.
    `protected abstract void` | `executeAndThrow(E input)` Execute this closure on the specified input object.

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

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

- - ### Constructor Detail

    - #### CatchAndRethrowClosure

          public CatchAndRethrowClosure()

  - ### Method Detail

    - #### execute

          public void execute(E input)

      Execute this closure on the specified input object.
      Specified by:
        `execute` in interface `Closure<E>`
      Parameters:
        `input` - the input to execute on
      Throws:
        `FunctorException` - (runtime) if the closure execution resulted in a checked exception.

    - #### executeAndThrow

          protected abstract void executeAndThrow(E input)
                                           throws Throwable

      Execute this closure on the specified input object.
      Parameters:
        `input` - the input to execute on
      Throws:
        `Throwable` - if the closure execution resulted in a checked exception.

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