org.springframework.aop

Interface Advisor

All Known Subinterfaces:

InstantiationModelAwarePointcutAdvisor, IntroductionAdvisor, PointcutAdvisor

All Known Implementing Classes:

AbstractBeanFactoryPointcutAdvisor, AbstractGenericPointcutAdvisor, AbstractPointcutAdvisor, AspectJExpressionPointcutAdvisor, AspectJPointcutAdvisor, AsyncAnnotationAdvisor, BeanFactoryCacheOperationSourceAdvisor, BeanFactoryJCacheOperationSourceAdvisor, BeanFactoryTransactionAttributeSourceAdvisor, DeclareParentsAdvisor, DefaultBeanFactoryPointcutAdvisor, DefaultIntroductionAdvisor, DefaultPointcutAdvisor, NameMatchMethodPointcutAdvisor, PersistenceExceptionTranslationAdvisor, ReflectiveAspectJAdvisorFactory.SyntheticInstantiationAdvisor, RegexpMethodPointcutAdvisor, StaticMethodMatcherPointcutAdvisor, TransactionAttributeSourceAdvisor

public interface Advisor

Base interface holding AOP advice (action to take at a joinpoint) and a filter determining the applicability of the advice (such as a pointcut). This interface is not for use by Spring users, but to allow for commonality in support for different types of advice.

Spring AOP is based around around advice delivered via method interception, compliant with the AOP Alliance interception API. The Advisor interface allows support for different types of advice, such as before and after advice, which need not be implemented using interception.

Author:

Rod Johnson, Juergen Hoeller

Field Summary

Fields

Modifier and Type	Field and Description
static Advice	EMPTY_ADVICE Common placeholder for an empty Advice to be returned from getAdvice() if no proper advice has been configured (yet).

Method Summary

Modifier and Type	Method and Description
Advice	getAdvice() Return the advice part of this aspect.
boolean	isPerInstance() Return whether this advice is associated with a particular instance (for example, creating a mixin) or shared with all instances of the advised class obtained from the same Spring bean factory.

Field Detail

EMPTY_ADVICE

static final Advice EMPTY_ADVICE

Common placeholder for an empty Advice to be returned from getAdvice() if no proper advice has been configured (yet).

Since:

5.0

Method Detail

getAdvice

Advice getAdvice()

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

isPerInstance

boolean isPerInstance()

Return whether this advice is associated with a particular instance (for example, creating a mixin) or shared with all instances of the advised class obtained from the same Spring bean factory.

Note that this method is not currently used by the framework. Typical Advisor implementations always return true. Use singleton/prototype bean definitions or appropriate programmatic proxy creation to ensure that Advisors have the correct lifecycle model.

Returns:

whether this advice is associated with a particular target instance