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, Aware, BeanFactoryAware, Ordered

public class AsyncAnnotationAdvisor
extends AbstractPointcutAdvisor
implements BeanFactoryAware

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:

Async, AnnotationAsyncExecutionInterceptor, Serialized Form

Field Summary

Fields inherited from interface org.springframework.aop.Advisor

EMPTY_ADVICE

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
AsyncAnnotationAdvisor() Create a new AsyncAnnotationAdvisor for bean-style configuration.
AsyncAnnotationAdvisor(Executor executor, AsyncUncaughtExceptionHandler exceptionHandler) Create a new AsyncAnnotationAdvisor for the given task executor.

Method Summary

Modifier and Type	Method and Description
protected Advice	buildAdvice(Executor executor, AsyncUncaughtExceptionHandler exceptionHandler)
protected Pointcut	buildPointcut(Set<Class<? extends Annotation>> asyncAnnotationTypes) Calculate a pointcut for the given async annotation types, 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	setBeanFactory(BeanFactory beanFactory) Set the BeanFactory to be used when looking up executors by qualifier.
void	setTaskExecutor(Executor executor) Specify the default 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 AsyncAnnotationAdvisor for bean-style configuration.

AsyncAnnotationAdvisor

public AsyncAnnotationAdvisor(@Nullable
                              Executor executor,
                              @Nullable
                              AsyncUncaughtExceptionHandler exceptionHandler)

Create a new AsyncAnnotationAdvisor for the given task executor.

Parameters:

executor - the task executor to use for asynchronous methods (can be null to trigger default executor resolution)

exceptionHandler - the AsyncUncaughtExceptionHandler to use to handle unexpected exception thrown by asynchronous method executions

See Also:

AsyncExecutionInterceptor.getDefaultExecutor(BeanFactory)

Method Detail

setTaskExecutor

public void setTaskExecutor(Executor executor)

Specify the default 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

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)

Set the BeanFactory to be used when looking up executors by qualifier.

Specified by:

setBeanFactory in interface BeanFactoryAware

Parameters:

beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.

See Also:

BeanInitializationException

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.

Specified by:

getAdvice in interface Advisor

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.

Specified by:

getPointcut in interface PointcutAdvisor

buildAdvice

protected Advice buildAdvice(@Nullable
                             Executor executor,
                             AsyncUncaughtExceptionHandler exceptionHandler)

buildPointcut

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

Calculate a pointcut for the given async annotation types, if any.

Parameters:

asyncAnnotationTypes - the async annotation types to introspect

Returns:

the applicable Pointcut object, or null if none