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    <ul> <li><p><em>I want this aspect to run with the second module, especially to join NiceClass</em></p> <p>If the pointcut matches a method from "another" module, the aspect will apply. You need to do nothing special, besides setting your dependencies correctly. e.g have your AOP configuration globally imported.</p></li> <li><p><em>Moreover suppose that the Aspect wants an argument of a class that's defined in that second module, then I end up with a circular dependency..</em></p> <p>The aspect dependency on the class argument should not result in circular dependency, since you have a parent POM that connects the two, and at runtime both of the modules are in a classpath.</p></li> </ul> <p>In general, it is recommended to follow Aspect structure as described by Spring <a href="http://static.springsource.org/spring/docs/3.1.x/spring-framework-reference/htmlsingle/spring-framework-reference.html#aop-common-pointcuts" rel="nofollow">documentation</a> => create an overall SystemArchitecture aspect, and then add more narrowed scope aspects as needed:</p> <pre><code>@Aspect public class SystemArchitecture { /** * A join point is in the web layer if the method is defined * in a type in the com.xyz.someapp.web package or any sub-package * under that. */ @Pointcut("within(com.xyz.someapp.web..*)") public void inWebLayer() {} /** * A join point is in the service layer if the method is defined * in a type in the com.xyz.someapp.service package or any sub-package * under that. */ @Pointcut("within(com.xyz.someapp.service..*)") public void inServiceLayer() {} /** * A join point is in the data access layer if the method is defined * in a type in the com.xyz.someapp.dao package or any sub-package * under that. */ @Pointcut("within(com.xyz.someapp.dao..*)") public void inDataAccessLayer() {} /** * A business service is the execution of any method defined on a service * interface. This definition assumes that interfaces are placed in the * "service" package, and that implementation types are in sub-packages. * * If you group service interfaces by functional area (for example, * in packages com.xyz.someapp.abc.service and com.xyz.def.service) then * the pointcut expression "execution(* com.xyz.someapp..service.*.*(..))" * could be used instead. * * Alternatively, you can write the expression using the 'bean' * PCD, like so "bean(*Service)". (This assumes that you have * named your Spring service beans in a consistent fashion.) */ @Pointcut("execution(* com.xyz.someapp.service.*.*(..))") public void businessService() {} /** * A data access operation is the execution of any method defined on a * dao interface. This definition assumes that interfaces are placed in the * "dao" package, and that implementation types are in sub-packages. */ @Pointcut("execution(* com.xyz.someapp.dao.*.*(..))") public void dataAccessOperation() {} } </code></pre> <p>This way any future aspects you may need, can reuse the over all System Architecture approach as well as live together with the actual module they are applied to.</p>
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    1. COThank you for your answer. I will apply this pattern to my project. Apparently I dont know how to run/compile/package to jar a spring aop project. I have a little experience in AspectJ, but I dont know how do you build a Spring AOP app. What maven goal do you run? My aspects dont seem to work. I am using IDEA Community Edition 10.5.2
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    2. CO`spring aop project` is no different from any other non web project, and the jar is created by maven as any other. If you are using AspectJ, you can take a look at this [example](http://www.dotkam.com/2010/10/12/running-spring-aspectj-tests-with-maven/) to see how it is configured with maven.
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    3. COOk thanks ;-) I think I'll manage from here.
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