[aspectj-users] A pointcut to match all static methods in a class with s

[Jochen Wuttke <jochen.wuttke@xxxxxx>]

Hi,

I've been playing a lot with pointcuts that should address static  
methods (in classes that potentially also have non-static members).
My basic pointcuts looks like this:

    pointcut initMethod():
    	call(* javax.servlet.jsp.JspFactory.setDefaultFactory(..));

	pointcut blockedMethods(): 		 !cflow(initMethod())
		&& !initMethod()
		&& call(* javax.servlet.jsp.JspFactory.*(..))
		&& !call(* java.lang.Object.getClass(..)); ;
		

The method setDefaultFactory is static and correctly addressed by the  
initMethod() pointcut. In the second pointcut I get a warning on the  
line

&& call(* javax.servlet.jsp.JspFactory.*(..))

saying that

"does not match because declaring class is java.lang.Object, if match  
desired user target(....)"

Now obviously I cannot use target() when I'm working with static  
methods. Further, in a simple test case the advice using the  
blockedMethods() pointcut gets woven in exactly the places I expect.  
But when I run it in a larger project with LTW, I get lots of warnings  
like this one:

[AppClassLoader@517590db] warning at javax/servlet/jsp/aspects/Users/ 
joe/Documents/uni/research/LuMi/workspace/tomcat6.0.9_aspects/src/ 
javax/servlet/jsp/aspects/JspFactory_Initialized.aj:31::0 does not  
match because declaring type is java.lang.Object, if match desired use  
target(javax.servlet.jsp.JspFactory) [Xlint:unmatchedSuperTypeInCall]
        see also: org/apache/catalina/connector/Connector.java:1013::0

What's funny is that the class Connector in this example doesn't even  
reference JspFactory or any of the methods therein.

Additionally, when I change the offending line in the pointcut to

&& call(static * javax.servlet.jsp.JspFactory.*(..))

then everything works fine.

I have a little trouble interpreting this behavior. I would expect the  
'*' without the explicit 'static' to cover both, static and non-static  
methods. Hence I do not understand the warning I get from the static  
weaver in the first example with the simple test case. Second, I  
simply don't understand the warnings produced by the load-time weaver.  
What are they supposed to mean, and how can the pointcut above  
possibly match anything that is not declared in JspFactory?

Any help or pointers to detailed documentation are greatly appreciated.

Jochen