CODEWITHSUNDEEP
javaspringreflectionspring-aop
Cheeta
Cheeta

Reputation: 437

Multiple advices in single Aspect for same method execution pointcut - Spring AOP

I just want to understand something related to Spring AOP advice ordering.In the docs it says

When two pieces of advice defined in the same aspect both need to run at the same join point, the ordering is undefined (since there is no way to retrieve the declaration order via reflection for javac-compiled classes). Consider collapsing such advice methods into one advice method per join point in each aspect class, or refactor the pieces of advice into separate aspect classes - which can be ordered at the aspect level.

I get that we cannot define multiple advices for same pointcut in one Aspect.I just want to understand what does it mean by there is no way to retrieve the declaration order via reflection for javac-compiled classes ?.

I have put @Order annotations on multiple advices on same pointcut in one Aspect and clearly defined the orders from 1 to 3.Why it cannot get this numeric order value when it reads @Order annotations in the Aspect class via reflection and properly call the advices in correct order? Can any body please make me understand this.Many Thanks in advance

Upvotes: 1

Views: 2857

Answers (1)

user1134181
user1134181

Reputation:

That's mean, that the order is undefined if not explicitly specified. @Order annotation has the runtime retention:

@Retention(value=RUNTIME)
@Target(value={TYPE,METHOD,FIELD})
public @interface Order

And it's possible to read order via reflection.

Upvotes: 1

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