定义成员访问和函数调用的切入点
这很难解释，但我想在 AspectJ 中定义一个像这样的函数调用的切入点：
public class B{
public A a;
}
public class A{
public void foo(){...}
}
并且切入点应该拦截以下调用：
B.a.foo();
我仍然没有弄清楚如何做到这一点（如果有的话） 。你们有什么想法吗？
提前致谢
it's quite hard to explain but I want to define in AspectJ a pointcut upon the call of a function like this:
public class B{
public A a;
}
public class A{
public void foo(){...}
}
and the pointcut should intercept the following call:
B.a.foo();
I still haven't figured out the way to do it (if there is any). Does any of you have any idea?
Thanks in advance
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我自己也是 AspectJ 新手，但我感觉这是不可能的。即使您设计了一个与
Bafoo()匹配的切入点，您仍然必须以某种方式处理以下情况：或者甚至
I'm an AspectJ newbie myself too, but I get the feeling this isn't possible. Even if you devised a pointcut that matched
B.a.foo(), you'd still have to somehow handle the following case:or even
您可以定义一个切入点来捕获对公共字段的任何引用，但据我所知，您无法创建一个将字段引用与对该引用的方法调用相结合的切入点。
You can define a pointcut that traps any reference to the public field, but AFAIK you can't create one that combines a field reference with a method call on that reference.
正如其他人提到的，这在 AspectJ 中是不可能的。然而，AspectJ 的一些研究扩展引入了跟踪切入，这是一种新的切入点，能够完全满足您的要求。我不认为有任何实现可以用于生产，但您可能有兴趣阅读它。一篇好论文在这里：
http://lsmr.cpsc.ucalgary.ca /papers/walker-fse-2004.pdf
As others have mentioned, this is not possible in AspectJ. However, there are some research extensions of AspectJ that introduce tracecuts, which are a new kind of pointcut capable of doing exactly what you are asking. I do not believe that there are any implementations that are production ready, but you may be interested in reading up about it. A good paper is here:
http://lsmr.cpsc.ucalgary.ca/papers/walker-fse-2004.pdf