What is AspectJ used for?

AspectJ is very mature, powerful and widely used in today’s enterprise Java frameworks like Spring. Spring uses AspectJ to make it easy for the developers to use Transaction Management, or applying security (using Spring Security) in your application.

What is the difference between AspectJ and Spring AOP?

Spring AOP aims to provide a simple AOP implementation across Spring IoC to solve the most common problems that programmers face. On the other hand, AspectJ is the original AOP technology which aims to provide complete AOP solution.

How does AspectJ compiler work?

Compile-Time Weaving When we have both the source code of the aspect and the code that we are using aspects in, the AspectJ compiler will compile from source and produce a woven class files as output. Afterward, upon execution of your code, the weaving process output class is loaded into JVM as a normal Java class.

Is AspectJ a programming language?

AspectJ is an aspect-oriented programming (AOP) extension created at PARC for the Java programming language.

How do you write AspectJ?

Common AspectJ annotations :

1. @Before – Run before the method execution.
2. @After – Run after the method returned a result.
3. @AfterReturning – Run after the method returned a result, intercept the returned result as well.
4. @AfterThrowing – Run after the method throws an exception.

What is weaving in AspectJ?

Weaving in AspectJ Classes are defined using Java syntax. The weaving process consists of executing the aspect advice to produce only a set of generated classes that have the aspect implementation code woven into it.

Does AspectJ use proxy?

aspectj. annotation. AspectJProxyFactory can be used to create a proxy for a target object that is advised by one or more @AspectJ aspects. Basic usage for this class is very simple, as illustrated below.

What is AspectJ weaving?

Weaving in AspectJ The weaving process consists of executing the aspect advice to produce only a set of generated classes that have the aspect implementation code woven into it. The example at right shows a potential implementation of an aspect which logs the entry and exit of all methods.

What is PointCut in AspectJ?

AspectJ provides primitive pointcuts that capture join points at these times. These pointcuts use the dynamic types of their objects to pick out join points. They may also be used to expose the objects used for discrimination. this(Type or Id) target(Type or Id)

What is Pointcut in AspectJ?

Is AspectJ slow?

Unfortunately, AspectJ seems to add this code in a clumsy way, slowing the applications performance even further. You can see this clumsyness when you try to debug the aspects using Eclipse: you can add a breakpoint, but often Eclipse fails to recognise the breakpoint.

What is AspectJ spring?

Advertisements. @AspectJ refers to a style of declaring aspects as regular Java classes annotated with Java 5 annotations. The @AspectJ support is enabled by including the following element inside your XML Schema-based configuration file.