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## org.springframework.scheduling.annotation
Class AsyncAnnotationAdvisor

    java.lang.Object
      org.springframework.aop.support.AbstractPointcutAdvisor
          org.springframework.scheduling.annotation.AsyncAnnotationAdvisor

All Implemented Interfaces:
  Serializable, Advisor, PointcutAdvisor, Ordered

    public class AsyncAnnotationAdvisor

extends AbstractPointcutAdvisor

Advisor that activates asynchronous method execution through the `Async` annotation. This annotation can be used at the method and type level in implementation classes as well as in service interfaces.

This advisor detects the EJB 3.1 `javax.ejb.Asynchronous` annotation as well, treating it exactly like Spring's own `Async`. Furthermore, a custom async annotation type may get specified through the `"asyncAnnotationType"` property.

Since:
  3.0
Author:
  Juergen Hoeller
See Also:
  `PersistenceExceptionTranslationAdvisor`, `Repository`, `DataAccessException`, `PersistenceExceptionTranslator`, Serialized Form

Field Summary

Fields inherited from interface org.springframework.core.Ordered
`HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE`

Constructor Summary
`AsyncAnnotationAdvisor()` Create a new ConcurrencyAnnotationBeanPostProcessor for bean-style configuration.
`AsyncAnnotationAdvisor(Executor executor)` Create a new ConcurrencyAnnotationBeanPostProcessor for the given task executor.

Method Summary
`protected Advice` | `buildAdvice(Executor executor)`
`protected Pointcut` | `buildPointcut(Set<Class<? extends Annotation>> asyncAnnotationTypes)` Calculate a pointcut for the given target class, if any.
`Advice` | `getAdvice()` Return the advice part of this aspect.
`Pointcut` | `getPointcut()` Get the Pointcut that drives this advisor.
`void` | `setAsyncAnnotationType(Class<? extends Annotation> asyncAnnotationType)` Set the 'async' annotation type.
`void` | `setTaskExecutor(Executor executor)` Specify the task executor to use for asynchronous methods.

Methods inherited from class org.springframework.aop.support.AbstractPointcutAdvisor
`equals, getOrder, hashCode, isPerInstance, setOrder`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### AsyncAnnotationAdvisor

    public AsyncAnnotationAdvisor()

  Create a new ConcurrencyAnnotationBeanPostProcessor for bean-style configuration.

### AsyncAnnotationAdvisor

    public AsyncAnnotationAdvisor(Executor executor)

  Create a new ConcurrencyAnnotationBeanPostProcessor for the given task executor.

  Parameters:
    `executor` - the task executor to use for asynchronous methods

Method Detail

### setTaskExecutor

    public void setTaskExecutor(Executor executor)

  Specify the task executor to use for asynchronous methods.

### setAsyncAnnotationType

    public void setAsyncAnnotationType(Class<? extends Annotation> asyncAnnotationType)

  Set the 'async' annotation type.

  The default async annotation type is the `Async` annotation, as well as the EJB 3.1 `javax.ejb.Asynchronous` annotation (if present).

  This setter property exists so that developers can provide their own (non-Spring-specific) annotation type to indicate that a method is to be executed asynchronously.

  Parameters:
    `asyncAnnotationType` - the desired annotation type

### getAdvice

    public Advice getAdvice()

  Description copied from interface: `Advisor`
  Return the advice part of this aspect. An advice may be an interceptor, a before advice, a throws advice, etc.

  Returns:
    the advice that should apply if the pointcut matches
  See Also:
    `MethodInterceptor`, `BeforeAdvice`, `ThrowsAdvice`, `AfterReturningAdvice`

### getPointcut

    public Pointcut getPointcut()

  Description copied from interface: `PointcutAdvisor`
  Get the Pointcut that drives this advisor.

### buildAdvice

    protected Advice buildAdvice(Executor executor)

### buildPointcut

    protected Pointcut buildPointcut(Set<Class<? extends Annotation>> asyncAnnotationTypes)

  Calculate a pointcut for the given target class, if any.

  Parameters:
    `targetClass` - the class to introspect
  Returns:
    the applicable Pointcut object, or `null` if none

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