What is Spring AOP & its uses?

What is Spring AOP & its uses?

What is Spring AOP? Spring AOP enables Aspect-Oriented Programming in spring applications. In AOP, aspects enable the modularization of concerns such as transaction management, logging or security that cut across multiple types and objects (often termed crosscutting concerns).

What are the advantages of Spring AOP?

Advantages of Spring AOP Service or Domain classes get advice by the aspects (cross-cutting concerns) without adding Spring AOP related classes or interfaces into the service or domain classes. Allows the developers to concentrate on the business logic, instead of the cross-cutting concerns.

How AOP works internally in spring?

Spring AOP is proxy-based. Spring uses either JDK proxies (preferred wheneven the proxied target implements at least one interface) or CGLIB proxies (if the target object does not implement any interfaces) to create the proxy for a given target bean.

What is target object in Spring AOP?

Target Object: These are the objects on which advices are applied. In Spring AOP, a subclass is created at runtime where the target method is overridden and advices are included based on their configuration. Proxy: It is an object that is created after applying advice to the target object.

How does Spring AOP implement logging?

Logging with Spring AOP

1. Add support for spring-aop and aspectj. If you are using maven, and not using spring-aop already, just add this two new dependencies.
2. Define your aspect and pointcuts. There are two ways two define aspects : With @Aspect annotation, or in Spring`s application.

Where is AOP used?

Some of the cases where AOP is frequently used: To provide declarative enterprise services. For example, as declarative transaction management. It allows users for implementing custom aspects.

Does Spring AOP use AspectJ?

However in Spring AOP you can benefit from the usage of AspectJ through the use of the aspectof factory method in the spring configuration bean. For the reason that Spring AOP is basically a proxy created from the container, so you can use AOP only for spring beans.

Does Spring AOP use reflection?

Both are using reflection, but AspectJ “uses it at minimum” (see eclipse.org/aspectj/doc/released/faq.php#q:reflection) 2. Yes, reflection is expensive and should be used with care.

What is interceptor in Spring AOP?

AOP is like triggers in programming languages such as Perl, . NET, Java, and others. Spring AOP module lets interceptors intercept an application. For example, when a method is executed, you can add extra functionality before or after the method execution.

How to use AOP in springspring?

Spring AOP can be used by 3 ways given below. But the widely used approach is Spring AspectJ Annotation Style. The 3 ways to use spring AOP are given below: By Spring1.2 Old style (dtd based) (also supported in Spring3) By AspectJ annotation-style. By Spring XML configuration-style(schema based)

What is AOP weaving in Spring Framework?

It is used to implement aspect contracts, created by AOP framework. It will be a JDK dynamic proxy or CGLIB proxy in spring framework. It is the process of linking aspect with other application types or objects to create an advised object. Weaving can be done at compile time, load time or runtime. Spring AOP performs weaving at runtime.

What is the use of AOP in SAP?

AOP is mostly used in following cases: to provide declarative enterprise services such as declarative transaction management. It allows users to implement custom aspects.

What is Aspect Oriented Programming (AOP)?

Aspect Oriented Programming (AOP) compliments OOPs in the sense that it also provides modularity. But the key unit of modularity is aspect than class. AOP breaks the program logic into distinct parts (called concerns).