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RE: [aspectj-users] Scoping or Weaving problem (???)withLTWin anEARon a WAR
|
Macon,
>Thanks... this has resolved our issue. We're
now using LTW with a concrete
>Aspect defined in code.
Good.
If you have the time perhaps you could
open a bug report detailing your setup, the problem you encountered and
the workaround. This might help others in the future. It will also ensure
we don't forget about the problem.
Matthew Webster
AOSD Project
Java Technology Centre, MP146
IBM United Kingdom Limited
Hursley Park, Winchester, SO21 2JN, England
Telephone: +44 196 2816139 (external) 246139 (internal)
"Macon Pegram"
<mpdisposal@xxxxxxxxxxx>
Sent by: aspectj-users-bounces@xxxxxxxxxxx
27/03/2007 17:55
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| RE: [aspectj-users] Scoping or Weaving
problem (???)withLTWin anEARon a WAR |
|
Matt,
Thanks... this has resolved our issue. We're now using LTW with a
concrete
Aspect defined in code.
Macon
>From: Matthew Webster <matthew_webster@xxxxxxxxxx>
>Reply-To: aspectj-users@xxxxxxxxxxx
>To: aspectj-users@xxxxxxxxxxx
>Subject: RE: [aspectj-users] Scoping or Weaving problem
>(???)withLTWin
anEARon a WAR
>Date: Tue, 27 Mar 2007 13:03:58 +0100
>
>Macon,
>
> >I'm guessing it would go something like this:
>Correct.
>
> >It's that third step "In aop.xml add a concrete definition
that refers to
>
> >the concrete aspect I created in code. " that I'm unsure
whether I need
>to
> >do.
>http://www.eclipse.org/aspectj/doc/released/devguide/ltw-configuration.html#configuring-load-time-weaving-with-aopxml-files
>
>Matthew Webster
>AOSD Project
>Java Technology Centre, MP146
>IBM United Kingdom Limited
>Hursley Park, Winchester, SO21 2JN, England
>Telephone: +44 196 2816139 (external) 246139 (internal)
>
>
>
>"Macon Pegram" <mpdisposal@xxxxxxxxxxx>
>Sent by: aspectj-users-bounces@xxxxxxxxxxx
>27/03/2007 11:55
>Please respond to
>aspectj-users@xxxxxxxxxxx
>
>
>To
>aspectj-users@xxxxxxxxxxx
>cc
>
>Subject
>RE: [aspectj-users] Scoping or Weaving problem (???) withLTWin anEARon
a
>WAR
>
>
>
>
>
>
>Ok... I get what you're suggesting (and I have actually run it with
>-verbose
>on, but not -debug in the past).
>
>You are correct... we are using an abstract aspect that is defined
as a
>concrete through the aop.xml. I'm not precisely sure I understand
how to
>
>do LTW with the concrete aspect. If you'll indulge me for a minute,
I'd
>like
>to try to explain how I think it should be done, and get some confirmation
>
>of the approach.
>
>I'm guessing it would go something like this:
>- Jump into Eclipse and extend the abstract aspect as a concrete with
a
>well
>defined pointcut.
>- In aop.xml remove the abstract-concrete definition that it currently
>has.
>- In aop.xml add a concrete definition that refers to the concrete
aspect
>I
>created in code.
>- While I'm there sprinkle in the -debug/-verbose options
>- Fire up the app and see what happens.
>
>It's that third step "In aop.xml add a concrete definition that
refers to
>the concrete aspect I created in code. " that I'm unsure whether
I need to
>
>do.
>
>Thanks for your time and advice on this matter!
>
>Macon
>
> >From: Matthew Webster <matthew_webster@xxxxxxxxxx>
> >Reply-To: aspectj-users@xxxxxxxxxxx
> >To: aspectj-users@xxxxxxxxxxx
> >Subject: RE: [aspectj-users] Scoping or Weaving problem (???)
> >withLTWin anEARon
a WAR
> >Date: Tue, 27 Mar 2007 09:25:39 +0100
> >
> >Macon,
> >
> > >Are you suggesting trying "static" weaving?
> >No. I surmised from you posts that you have defined an abstract
aspect
> >somewhere in your EAR and defined a concrete sub-aspect in an
aop.xml
>also
> >somewhere in your EAR e.g.
> >
> ><aspectj>
> > <aspects>
> > <concrete-aspect name="
> >com.XXX.YYY.governor.aspects.ConcreteGovernor"
> > extends="com.XXX.YYY.governor.aspects.AbstractGovernor
">
> > <pointcut
name="..." _expression_="..."/>
> > </concrete-aspect>
> > </aspects>
> ></aspectj>
> >
> >Is this correct? If so my suggestion was to replace the aop.xml
>definition
> >(which results in an aspect and hence a class being generated
at runtime)
> >with a concrete aspect defined using code. You can still use LTW
which
> >given the complex structure of your application seems like the
best
> >approach.
> >
> >If possible you might like to define a META-INF/aop.xml in the
>problematic
> >WAR file that just turns on some extra debug information:
> >
> ><aspectj>
> > <weaver options="-debug -verbose"/>
> ></aspectj>
> >
> >Matthew Webster
> >AOSD Project
> >Java Technology Centre, MP146
> >IBM United Kingdom Limited
> >Hursley Park, Winchester, SO21 2JN, England
> >Telephone: +44 196 2816139 (external) 246139 (internal)
> >
> >
> >
> >"Macon Pegram" <mpdisposal@xxxxxxxxxxx>
> >Sent by: aspectj-users-bounces@xxxxxxxxxxx
> >26/03/2007 18:10
> >Please respond to
> >aspectj-users@xxxxxxxxxxx
> >
> >
> >To
> >aspectj-users@xxxxxxxxxxx
> >cc
> >
> >Subject
> >RE: [aspectj-users] Scoping or Weaving problem (???) with LTWin
anEARon a
> >WAR
> >
> >
> >
> >
> >
> >
> >Matthew,
> >
> >Are you suggesting trying "static" weaving? Ron
Difrango recommended a
> >similar approach in some side conversations we've had. I'm
working on
> >putting together a test build script right now that explodes our
EAR and
> >does the static weaving. I've created code based concrete
aspects
> >(extending the abstract Aspect and providing pointcuts).
> >
> >I've kind of bought in to the need to do static instead of load
time
> >weaving
> >for my particular application, but I'd still like to understand
the
> >obstacle
> >I've run into. I've done a little classloader research
and found the
> >following:
> >
> >Files in .WAR are loaded by a classloader 1 level deeper than
those that
> >are
> >at the EAR level (which I expected).
> >
> >Here's the dump (Each * represents the number of classloader layers
that
> >would need to be traversed to reach it):
> >
> >EAR Level class
> >---------------------
> >* weblogic.utils.classloaders.GenericClassLoader@25b8af2( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@25b8b65, annotation:
> >simpleportal@, parent:
> >weblogic.utils.classloaders.GenericClassLoader@1b4d2ad( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@1b4d320, annotation:
> >ApplicationClassLoader@, parent:
> >weblogic.utils.classloaders.GenericClassLoader@17cce51( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@17cd88e, annotation:
null,
> >parent: sun.misc.Launcher$AppClassLoader@1d05a1)))
> >
> >** weblogic.utils.classloaders.GenericClassLoader@1b4d2ad( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@1b4d320, annotation:
> >ApplicationClassLoader@, parent:
> >weblogic.utils.classloaders.GenericClassLoader@17cce51( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@17cd88e, annotation:
null,
> >parent: sun.misc.Launcher$AppClassLoader@1d05a1))
> >
> >*** weblogic.utils.classloaders.GenericClassLoader@17cce51( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@17cd88e, annotation:
null,
> >parent: sun.misc.Launcher$AppClassLoader@1d05a1)
> >
> >**** sun.misc.Launcher$AppClassLoader@1d05a1
> >
> >***** sun.misc.Launcher$ExtClassLoader@1ce2ad
> >
> >WAR Level class
> >-------------------
> >* weblogic.utils.classloaders.GenericClassLoader@266e282( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@266e309, annotation:
> >simpleportal@1_0, parent:
> >weblogic.utils.classloaders.GenericClassLoader@25b8af2( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@25b8b65, annotation:
> >simpleportal@, parent:
> >weblogic.utils.classloaders.GenericClassLoader@1b4d2ad( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@1b4d320, annotation:
> >ApplicationClassLoader@, parent:
> >weblogic.utils.classloaders.GenericClassLoader@17cce51( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@17cd88e, annotation:
null,
> >parent: sun.misc.Launcher$AppClassLoader@1d05a1))))
> >
> >** weblogic.utils.classloaders.GenericClassLoader@25b8af2( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@25b8b65, annotation:
> >simpleportal@, parent:
> >weblogic.utils.classloaders.GenericClassLoader@1b4d2ad( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@1b4d320, annotation:
> >ApplicationClassLoader@, parent:
> >weblogic.utils.classloaders.GenericClassLoader@17cce51( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@17cd88e, annotation:
null,
> >parent: sun.misc.Launcher$AppClassLoader@1d05a1)))
> >
> >*** weblogic.utils.classloaders.GenericClassLoader@1b4d2ad( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@1b4d320, annotation:
> >ApplicationClassLoader@, parent:
> >weblogic.utils.classloaders.GenericClassLoader@17cce51( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@17cd88e, annotation:
null,
> >parent: sun.misc.Launcher$AppClassLoader@1d05a1))
> >
> >**** weblogic.utils.classloaders.GenericClassLoader@17cce51( finder:
> >weblogic.utils.classloaders.CodeGenClassFinder@17cd88e, annotation:
null,
> >parent: sun.misc.Launcher$AppClassLoader@1d05a1)
> >
> >***** sun.misc.Launcher$AppClassLoader@1d05a1
> >
> >****** sun.misc.Launcher$ExtClassLoader@1ce2ad
> >
> >Any thoughts on an explanation?
> >
> >Macon
> >
> > >From: Matthew Webster <matthew_webster@xxxxxxxxxx>
> > >Reply-To: aspectj-users@xxxxxxxxxxx
> > >To: aspectj-users@xxxxxxxxxxx
> > >Subject: RE: [aspectj-users] Scoping or Weaving problem (???)
with
> > >LTWin anEARon a WAR
> > >Date: Mon, 26 Mar 2007 08:49:08 +0100
> > >
> > >Macon,
> > >
> > >This might be a problem with the <concrete-aspect>
feature of aop.xml.
> > >Could you try defining your aspect using code instead?
> > >
> > >Matthew Webster
> > >AOSD Project
> > >Java Technology Centre, MP146
> > >IBM United Kingdom Limited
> > >Hursley Park, Winchester, SO21 2JN, England
> > >Telephone: +44 196 2816139 (external) 246139 (internal)
> > >
> > >
> > >
> > >"Macon Pegram" <mpdisposal@xxxxxxxxxxx>
> > >Sent by: aspectj-users-bounces@xxxxxxxxxxx
> > >22/03/2007 18:02
> > >Please respond to
> > >aspectj-users@xxxxxxxxxxx
> > >
> > >
> > >To
> > >aspectj-users@xxxxxxxxxxx
> > >cc
> > >
> > >Subject
> > >RE: [aspectj-users] Scoping or Weaving problem (???) with
LTW in
>anEARon
> >a
> > >WAR
> > >
> > >
> > >
> > >
> > >
> > >
> > >Ron,
> > >
> > >I realized shortly after posting the question that I had
left some
> >details
> > >
> > >out.
> > >
> > >The JAR containing the aspect is actually at the EAR level.
The
> > >exceptions
> > >from the original posting actually occurred with that configuration.
> > >
> > >I've tried putting it at both the EAR and the WAR level and
it balked
> > >about
> > >having 2 copies of the Concrete aspect. There is a
possible (but
>nasty)
> > >solution where I could create 2 variations of the aspect
jar with
> > >different
> > >concrete definitions in aop.xml.
> > >
> > >I have not tried putting it at the container level yet. Again,
an
> > >approach
> > >I'd prefer to avoid if possible, but I'm not completely adverse
to it.
> > >
> > >Right now I'm trying to get an understanding of why this
is happening
>and
> > >that may illuminate the way to a solution.
> > >
> > >Macon
> > >
> > >_________________________________________________________________
> > >5.5%* 30 year fixed mortgage rate. Good credit refinance.
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> > >
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> > >https://dev.eclipse.org/mailman/listinfo/aspectj-users
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >Unless stated otherwise above:
> > >IBM United Kingdom Limited - Registered in England and Wales
with
>number
> > >741598.
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> > >
> > >
> >
> >
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>Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire
PO6 3AU
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