RE: [aspectj-users] LTW for bootstap classes

["Ron Bodkin" <rbodkin@xxxxxxxxxxxxxx>]

Hi Alexander,

At this time AspectJ won't apply load-time weaving to bootstrap-loaded
classes at all. It should be possible to do so for a fairly large subset of
classes, but it would require changing (and testing!) the AspectJ code base
so that the LTW system handles null ClassLoaders correctly everywhere. For
calling a non-public method, I'd suggest you try using reflection,
specifically get that method and invoke setAccessible(true) to allow calling
it. For other uses of aspects with the bootstrap loader, you might consider
using call pointcuts with LTW or in the worst case preprocessing the
bootstrap classes to weave them.

-----Original Message-----
From: aspectj-users-bounces@xxxxxxxxxxx
[mailto:aspectj-users-bounces@xxxxxxxxxxx] On Behalf Of Alexander Kriegisch
Sent: Saturday, February 03, 2007 9:36 AM
To: aspectj-users@xxxxxxxxxxx
Subject: [aspectj-users] LTW for bootstap classes

I read the following in the AspectJ 5 LTW documentation
(http://www.eclipse.org/aspectj/doc/released/devguide/ltw-specialcases.html)
:

> The following classes are not exposed to the LTW infrastructure 
> regardless of the aop.xml file(s) used:
> 
> - All org.aspectj.* classes (and subpackages) - as those are needed
> by the infrastructure itself
> 
> - All java.* and javax.* classes (and subpackages)
> 
> - All sun.reflect.* classes - as those are JDK specific classes used 
> when reflective calls occurs

Having understood that much, I thought that I might give some other
classes inside rt.jar a try. Specifically, I tried to call the
non-public constructor

sun.security.rsa.RSAPrivateKeyImpl(BigInteger, BigInteger)

from a  privileged aspect.

I suddeed doing so by weaving into the classfiles, producing copies of
all JRE bootstrap classes in my project's 'bin' directory. but that is
not what I want, because I would much prefer to tackle the challenge
using LTW. It just won't work, though.

I would appreciate hints concerning the following questions:
  - Can it be done by LTW at all?
  - If so, how? I want to call the constructor and assign the resulting
    object to a member of another regular Java class, so it can work
    with that instance.
  - Last, but not least, I would like to do this from Eclipse 3.2 with
    AJDT installed. I could not come up with a project and start
    configuration properly addressing this issue.

Regards
-- 
Alexander Kriegisch
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