| [aspectj-users] Re: [NEWSDELIVER] Re: RCP & AspectJ |
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[NEWSDELIVER]
Re: RCP & AspectJ
What I should do if I want to use Aspects in RCP?
Thanks
Adrian Colyer wrote:
> Hi Mario,
> We've also done a lot of experimenting with aspects and plugins
> (strictly, OSGi). The result is the equinox incubator "AOSGi"
project
> (http://www.eclipse.org/equinox/incubator/aspects/index.php), which
is a
> joint Eclipse incubation project between Martin Lippert (AJEER) and
the
> OSGi integration that we developed in Hursley. There's a bunch of
code
> going through legal reviews etc. at the moment, then once it
can be
> uploaded the project should spring into life (Matthew Webster and
Martin
> Lippert are the joint leads). It will give you very nice integration
of
> aspects in bundles (without needing to promote to the system-wide
level
> if you don't want to) and can deliver very good performance. It's
also
> possible to integrate a cache so after you bring up a configuration
for
> the first time, the woven class files are cached - thus subsequent
> start-up overhead with the same configuration is zero.
>
> Watch this space for more info, and do get in touch with Matthew and
> Martin because the more real requirements and projects we have in
this
> space the better we can make the support.
>
> Regards, Adrian.
>
> Mario Scalas wrote:
>> Hi, all: I've been busy trying to make them (aj & rcp) work
together
>> and I'd
>> like to share my experiences, hoping they could help some other
people
>> and
>> have some of my (confused) ideas clarified.
>>
>> I've a bunch of aspects scattered along several plugins in my
RCP
>> application: some of them are shared among different plugins so
I'd
>> like to
>> put them in an "aspects collection plug-in".
>> So I've put my test abstract aspect (a dummy logger) in my aspects
>> plugin,
>> added this as a plug-in dependency to my own to-be-weaven plug-in,
>> implemented the concrete aspect using the "participant pattern"
explained
>> in [4] and crossed the fingers.
>> Now:
>> 1) the IDE shows the captured join points (good) (see [3])
>> 2) when I execute my application the awaited aspect's output is
simply
>> absent so I guess that my aspects has been forgotten :S (bad)
>>
>> Then I read on the mailing list about AJEER ([2], Martin Lippert
has
>> updated
>> it to the latest stable AspectJ 5.0 release) and configured my
>> application
>> as explained in [1]. I've added a second aspect to my aspects
plug-in
>> which
>> implements the worker object pattern as explained in [4] (just
using some
>> custom annotations to mark the methods to be run in a different
thread).
>> Now the console output of my app becomes:
>>
>> MY PERSONAL ADAPTOR IS CREATED AND WILL START THE FRAMEWORK
>> Start Weaving Service
>> aspect promoted to the system:
>> it.uniba.di.cdg.xcore.aspects.it.uniba.di.cdg.xcore.aspects.AnnotatedAsynchronousExecution,
>>
>> 1.0.0
>> aspect promoted to the system:
>> it.uniba.di.cdg.xcore.weaveme.it.uniba.di.cdg.xcore.weaveme.View$OwnLog,
>> 1.0.0
>> WeavemePlugin.start()
>> additional classes put in cache:
>> it.uniba.di.cdg.xcore.weaveme.View$AjcClosure1
>> [Before] execution(View.createPartControl(..))
>> [Before] execution(View.setFocus())
>> [START] AsynchronousExecution.around()
>> [END] AsynchronousExecution.around()
>> <snip: some counting follows ...>
>>
>> Wow, this is nice ... but it is *sloooow*: it takes 20+ seconds
on my
>> p3@2.5GHz / 1G linux box to show the application window (most
time
>> seems to
>> be spent after the "additional classes put in cache:"
message): and there
>> are just two plugins (+ the 2 AJEER plugins and the RCP runtime).
>>
>> If you are interested you can download my test application in
[5]. It is
>> composed by:
>> - an aspects plugin which collects all of my test aspects
>> - a "weaveme" plugin containing the view and product
- a "weaveme"
>> feature projects that I used to compose my product since
>> configuring it with plugins didn't make the eclipse runtime happy
(no
>> product id found :S).
>> (Obviously you must have the AJEE plugins in your target platform
>> directory!)
>>
>> So what are your current experiences with the subject?
>> Regards
>> Mario
>>
>> Ps: Hmmm ... perhaps this is heavy matters for holidays season
:)
>> Merry xmas
>> and happy new year to all the people out there, anyway.
>>
>> [1] http://ajeer.sourceforge.net/?cat=3
>> [2] http://sourceforge.net/projects/ajeer
>> [3] http://cdg.di.uniba.it/~mscalas/join_points.png
>> [4] AspectJ in Action (see also
>> http://www-128.ibm.com/developerworks/java/library/j-aopwork3/
)
>> [5] http://cdg.di.uniba.it/~mscalas/ajeer_experiment.tar.gz
>>