Spring AOP (Aspect Oriented Programming)

- The importance of AOP is to seperate secondary / cross cutting concerns (middleware service implementations - TX, security, logging, session management, state persistence etc services) from primary / core concerns (business logic implementation).

- AOP recommends to write one Advice for each service implementation

-The types of Advices are

i) Method before Advice - sub class of MethodBeforeAdvice

ii) After Advice - sub class of AfterReturningAdvice

iii) Around Advice - sub class of MethodInterceptor (3rd party vendor)

iv) Throws Advice - sub class of ThrowsAdvice