org.apache.tapestry5.internal.plastic

## Class AbstractMethodInvocation

- java.lang.Object
- - org.apache.tapestry5.internal.plastic.AbstractMethodInvocation

- All Implemented Interfaces:
    AnnotationAccess, MethodInvocation, MethodInvocationResult

      public abstract class AbstractMethodInvocation
      extends Object
      implements MethodInvocation

- - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `AbstractMethodInvocation(Object instance, InstanceContext instanceContext, MethodInvocationBundle bundle)`

  - ### Method Summary

    All Methods Instance Methods Abstract Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected void` | `clearCheckedException()` Invoked from the implementation of `MethodInvocation.setReturnValue(Object)`.
    `boolean` | `didThrowCheckedException()` Returns true if the method invocation threw a checked exception.
    `<T extends Annotation> T` | `getAnnotation(Class<T> annotationType)` Returns an instantiated annotation, or null if the target does not have the indicated annotation.
    `<T extends Throwable> T` | `getCheckedException(Class<T> exceptionType)` Retrieves the checked exception assignable to the indicated type, or null if the invocation did not throw a checked exception or the thrown exception is not assignable.
    `Object` | `getInstance()` The instance on which the method was originally invoked.
    `InstanceContext` | `getInstanceContext()`
    `Method` | `getMethod()` Returns the method being invoked.
    `<T extends Annotation> boolean` | `hasAnnotation(Class<T> annotationType)` Checks to see if the target has an annotation of the given type.
    `MethodInvocation` | `proceed()` Proceed with the method invocation, either chaining into the next `MethodAdvice` added to the method, or ultimately into the actual method implementation.
    `protected abstract void` | `proceedToAdvisedMethod()` This is implemented in a runtime-generated subclass.
    `void` | `rethrow()` If the invocation threw a checked exception, then this method throws that exception wrapped as the cause of a new RuntimeException.
    `MethodInvocation` | `setCheckedException(Exception exception)` Sets the checked exception; this can be used to indicate failure for the method, or to cancel the thrown exception (by setting the exception to null).

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

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

    - ### Methods inherited from interface org.apache.tapestry5.plastic.MethodInvocation

      `getParameter, setParameter, setReturnValue`

    - ### Methods inherited from interface org.apache.tapestry5.plastic.MethodInvocationResult

      `getReturnValue`

- - ### Constructor Detail

    - #### AbstractMethodInvocation

          protected AbstractMethodInvocation(Object instance,
                                             InstanceContext instanceContext,
                                             MethodInvocationBundle bundle)

  - ### Method Detail

    - #### clearCheckedException

          protected void clearCheckedException()

      Invoked from the implementation of `MethodInvocation.setReturnValue(Object)`.

    - #### rethrow

          public void rethrow()

      Description copied from interface: `MethodInvocationResult`
      If the invocation threw a checked exception, then this method throws that exception wrapped as the cause of a new RuntimeException. Otherwise, this method does nothing.
      Specified by:
        `rethrow` in interface `MethodInvocationResult`

    - #### didThrowCheckedException

          public boolean didThrowCheckedException()

      Description copied from interface: `MethodInvocationResult`
      Returns true if the method invocation threw a checked exception.
      Specified by:
        `didThrowCheckedException` in interface `MethodInvocationResult`

    - #### getCheckedException

          public <T extends Throwable> T getCheckedException(Class<T> exceptionType)

      Description copied from interface: `MethodInvocationResult`
      Retrieves the checked exception assignable to the indicated type, or null if the invocation did not throw a checked exception or the thrown exception is not assignable.
      Specified by:
        `getCheckedException` in interface `MethodInvocationResult`

    - #### getInstance

          public Object getInstance()

      Description copied from interface: `MethodInvocation`
      The instance on which the method was originally invoked.
      Specified by:
        `getInstance` in interface `MethodInvocation`

    - #### getInstanceContext

          public InstanceContext getInstanceContext()

      Specified by:
        `getInstanceContext` in interface `MethodInvocation`

    - #### proceed

          public MethodInvocation proceed()

      Description copied from interface: `MethodInvocation`
      Proceed with the method invocation, either chaining into the next `MethodAdvice` added to the method, or ultimately into the actual method implementation. The method may throw a checked exception, which will be caught and be reported as `MethodInvocationResult.didThrowCheckedException()`.
      Specified by:
        `proceed` in interface `MethodInvocation`
      Returns:
        this method invocation, for a fluent API

    - #### setCheckedException

          public MethodInvocation setCheckedException(Exception exception)

      Description copied from interface: `MethodInvocation`
      Sets the checked exception; this can be used to indicate failure for the method, or to cancel the thrown exception (by setting the exception to null).
      Specified by:
        `setCheckedException` in interface `MethodInvocation`
      Parameters:
        `exception` - new checked exception, or null
      Returns:
        this method invocation, for a fluent API

    - #### hasAnnotation

          public <T extends Annotation> boolean hasAnnotation(Class<T> annotationType)

      Description copied from interface: `AnnotationAccess`
      Checks to see if the target has an annotation of the given type.
      Specified by:
        `hasAnnotation` in interface `AnnotationAccess`

    - #### getAnnotation

          public <T extends Annotation> T getAnnotation(Class<T> annotationType)

      Description copied from interface: `AnnotationAccess`
      Returns an instantiated annotation, or null if the target does not have the indicated annotation.
      Specified by:
        `getAnnotation` in interface `AnnotationAccess`

    - #### getMethod

          public Method getMethod()

      Description copied from interface: `MethodInvocation`
      Returns the method being invoked.
      Specified by:
        `getMethod` in interface `MethodInvocation`

    - #### proceedToAdvisedMethod

          protected abstract void proceedToAdvisedMethod()

      This is implemented in a runtime-generated subclass.

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