ExceptionUnwrapper (Oracle - Berkeley DB Java Edition API)
Date: 2014-12-16

com.sleepycat.util

## Class ExceptionUnwrapper

- java.lang.Object
- - com.sleepycat.util.ExceptionUnwrapper

-     public class ExceptionUnwrapper
      extends Object

  Unwraps nested exceptions by calling the `ExceptionWrapper.getCause()` method for exceptions that implement the `ExceptionWrapper` interface. Does not currently support the Java 1.4 `Throwable.getCause()` method.
  Author:
    Mark Hayes

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ExceptionUnwrapper()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static Exception` | `unwrap(Exception e)` Unwraps an Exception and returns the underlying Exception, or throws an Error if the underlying Throwable is an Error.
    `static Throwable` | `unwrapAny(Throwable e)` Unwraps an Exception and returns the underlying Throwable.

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

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

- - ### Constructor Detail

    - #### ExceptionUnwrapper

          public ExceptionUnwrapper()

  - ### Method Detail

    - #### unwrap

          public static Exception unwrap(Exception e)

      Unwraps an Exception and returns the underlying Exception, or throws an Error if the underlying Throwable is an Error.
      Parameters:
        `e` - is the Exception to unwrap.
      Returns:
        the underlying Exception.
      Throws:
        `Error` - if the underlying Throwable is an Error.
        `IllegalArgumentException` - if the underlying Throwable is not an Exception or an Error.

    - #### unwrapAny

          public static Throwable unwrapAny(Throwable e)

      Unwraps an Exception and returns the underlying Throwable.
      Parameters:
        `e` - is the Exception to unwrap.
      Returns:
        the underlying Throwable.

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