org.apache.tapestry5.services

## Interface MethodInvocationResult

- All Known Implementing Classes:
    MethodInvocationFailResult, MethodInvocationSuccessfulResult

      public interface MethodInvocationResult

  Captures the result of invoking a method.
  Since:
    5.2.0

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `getReturnValue()` The return value from the method invocation.
    `<T extends Throwable> T` | `getThrown(Class<T> throwableClass)` If `isFail()` is true, this method provides access to the actual checked exception that was thrown.
    `boolean` | `isFail()` If true, then the method invocation ended with a checked exception being thrown.
    `void` | `rethrow()` If the invocation threw a checked exception, this method will wrap that exception in a RuntimeException and throw that.

- - ### Method Detail

    - #### getReturnValue

          Object getReturnValue()

      The return value from the method invocation. This will be null if the method returns null, is a void method, or if a checked exception was thrown by the method.

    - #### isFail

          boolean isFail()

      If true, then the method invocation ended with a checked exception being thrown.

    - #### rethrow

          void rethrow()

      If the invocation threw a checked exception, this method will wrap that exception in a RuntimeException and throw that. For most code that doesn't specifically care about the thrown exception, this method should be invoked before continuing on to examine `getReturnValue()`.

    - #### getThrown

          <T extends Throwable> T getThrown(Class<T> throwableClass)

      If `isFail()` is true, this method provides access to the actual checked exception that was thrown.
      Parameters:
        `throwableClass` - the type of exception to match
      Returns:
        the exception, if the method invocation threw a checked exception, and the exception is assignable to the provided type. In other cases, null is returned.

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