Advisor (Spring Framework 5.2.12.RELEASE API)

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 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

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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