aspectj

问题 I'm working on an aspectj aspect which needs to know where it's invoked from. At the moment I'm using new Throwable().getStackTrace(); to access this information but each aspect is taking several hundred microseconds to run. I've looked at the SecurityManager but that only seems to be able to get me the class name. Are there any other alternatives I've missed? Update JMH Benchmark results referred to in my comment on @apangin's answer: Benchmark Mode Cnt Score Error Units MyBenchmark

问题 import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.ProceedingJoinPoint; @Aspect public class AroundExample { @Around("com.xyz.myapp.SystemArchitecture.businessService()") public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable { // start stopwatch Object retVal = pjp.proceed(); // stop stopwatch return retVal; } } 回答1: You will need current version of aspectj jars i.e. aspectjrt-1.6.6.jar and aspectjweaver-1.7.2.jar

问题 import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.ProceedingJoinPoint; @Aspect public class AroundExample { @Around("com.xyz.myapp.SystemArchitecture.businessService()") public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable { // start stopwatch Object retVal = pjp.proceed(); // stop stopwatch return retVal; } } 回答1: You will need current version of aspectj jars i.e. aspectjrt-1.6.6.jar and aspectjweaver-1.7.2.jar

问题 I'm new in SpringAOP. I want to write simple example of Introductions but can't understand clearly how it must work. In documentation I find that: Introduction: declaring additional methods or fields on behalf of a type. Spring AOP allows you to introduce new interfaces (and a corresponding implementation) to any advised object. For example, you could use an introduction to make a bean implement an IsModified interface, to simplify caching. (An introduction is known as an inter-type

问题 I'd like to use aspectj to profile a library. My plan was to mark methods that require profiling with an annotation: @Profiled("logicalUnitOfWork") And then have an aspect that would fire before and after methods that would use the logicalUnitOfWork to highlight the profiled content. So, my pointcut to start with looks like this. Note that I don't have the argument for the annotation here; that's one of the things I'm not sure how to do: pointcut profiled() : execution(@Profiled * *());

问题 I'm having trouble getting AspectJ to perform load time weaving on a class annotated with @configurable in my main project. No fields get set and none of the setters are touched. I don't think there's trouble with the configuration itself, because I've extracted the configuration and tested it on a smaller sandbox project. Just for the sake of it, I'll include it in this question though. So, I'm wondering: Is there anything in the larger project that might be hindering Spring/AspectJ from

问题 Here is the problem - I was using @Async provided by Spring to execute some methods asynchronously. However, because it is proxy based, it wouldn't work if the method is called from within the same class. I do need my async methods to be called from within the same class. I know if I use AspectJ instead of Spring AOP, I will be able to do that. So my question is, is there a way to use Spring's @Async and load time weave it? Or, is there an AspectJ based async execution aspect already written

问题 My understanding is that .. is 0-Many args and * is one arg of any name. Is this correct? Does aspectj support syntax like args(..,myArg,..) ? 回答1: This is from AspectJ site: http://www.eclipse.org/aspectj/doc/next/progguide/semantics-pointcuts.html * represents any number of characters except "." .. represents any number of characters including any number of "." Update From AspectJ in Action - for method signatures: In method signatures, the wildcard .. is used to denote any type and number

问题 I'm working in an Android project where I'm using Dagger for dependency injection. I don't know so much about Gradle, but as far as I understand, the Dagger annotations are processed by its compiler once the project is built. There's no problem in configuring it as the user guide says. Well, now I want to integrate AspectJ too, so I'm looking at one of the plugins for Android. However, it seems this plugin does a build post processing job to read the aspects too, which remains in conflict

问题 I'm working in an Android project where I'm using Dagger for dependency injection. I don't know so much about Gradle, but as far as I understand, the Dagger annotations are processed by its compiler once the project is built. There's no problem in configuring it as the user guide says. Well, now I want to integrate AspectJ too, so I'm looking at one of the plugins for Android. However, it seems this plugin does a build post processing job to read the aspects too, which remains in conflict