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Re: [aspectj-users] aspectJ with packaged classes
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After step 3, try adding the 'Hello World' jar file to the AspectJ
project's in-path. The weaving will then occur in the AspectJ project,
and the woven version of the Hello World class will be written to the
output folder of the AspectJ project. You could use the Navigator view
to check this. You can then run the woven class by creating a run
configuration for the AspectJ project and entering the name of the
class. To confirm that weaving is happening, you can also turn on a
compiler option: AspectJ compiler > Information > Output weaving info
messages to problems view.
This article may also be useful background reading:
http://www.eclipse.org/articles/Article-Introducing-AJDT/article.html
Hope that helps,
Matt.
On 21/05/07, Anirudh Chandrakant <anirudh.chandrakant@xxxxxxxxx> wrote:
Hi,
Thanks for that, it makes things a little clearer.
But i am still facing a few problems. Here is what i did:
1. I created a Java project with one class which basically prints 'Hello World'
2. I packaged this into a jar and exported it to a location.
3. I created a AspectJ project with one aspect which prints a message
after the call to the method which prints 'Hello World'.
4. I packaged this as a 'Jar File with AspectJ support' and exported it.
5. When i execute it with the command you have specified, all i can
see is 'Hello World' with no message from the aspect.
I thought there might be something wrong with my code, so i put the
Hello World class in the aspect project. When i ran it, it displayed
the right information.
Am i doing something wrong? Do i need to do something more?
Thanks again,
Anirudh
On 5/21/07, Sérgio Agostinho <sergioag@xxxxxxxxxxxxx> wrote:
>
> Hello there,
>
> You will need to do something like this:
>
> $ java -classpath
> ".:aspectjrt.jar:your_aspectj_project.jar" -jar
> your_java_project.jar
>
> This assumes that you are keeping the aspectJ runtime library and your
> aspects JARs in the same directory as to your application. It also assumes
> that your are creating a JAR file with your aspectJ project.
>
> Hope this helps,
>
> Anirudh Chandrakant wrote:
> Thank you so much for that information, dean!
>
> I still a little difficulty figuring out how this would work. Here is the
> scenario:
> I have a Java project. I do not have the sources, i only have the jar. I
> would like to weave aspects into this. I create an aspectJ project and
> define the aspects i want. I add the Java jar in the inpath of the aspectJ
> project.
>
> Now:
> 1. How do i execute the aspectJ project without a 'main' class? If i have
> to specify the 'main' class, what do i do in the main class?
> 2. How does it all work? If i execute the jar file, how are the aspects
> weaved in? How is the jar aware of the aspects?
>
> Maybe i am missing something extremely simple here, but i am unable to
> figure out how this whole setting would function.
>
> Thanks in advance,
> Anirudh
>
>
> On 5/21/07, Dean Wampler <dean@xxxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > Yes, use the "-inpath" option for ajc to specify the jars you want to
> "weave". Here's a good blog on the different path options.
> >
> >
> >
> http://www.aspectprogrammer.org/blogs/adrian/2004/10/three_paths_sta.html
> >
> >
> > dean
> >
> >
> >
> >
> > On May 21, 2007, at 6:05 AM, Anirudh Chandrakant wrote:
> >
> >
> > Hi,
> >
> > I am a new entrant into the aspectJ world and i am enjoying the ride so
> far.
> > I have used aspectJ with an existing project and it works as desired.
> >
> > Now, if i have a Java project but i do not have the source files (i only
> have the jar), can i still use aspectJ? (I know the signatures of all the
> methods that i want to insert my pointcuts into)
> >
> > The demo shows conversion of a normal project into an aspectJ project (in
> a step similar to instrumentation), i was wondering if this was possible
> with packaged classes.
> >
> > Thanks in advance,
> > Anirudh
> >
> > _______________________________________________
> > aspectj-users mailing list
> > aspectj-users@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/aspectj-users
> >
> >
> > Dean Wampler, Ph.D.
> > dean at objectmentor.com
> > http://www.objectmentor.com
> > http://www.aspectprogramming.com
> > http://www.contract4j.org
> >
> >
> > I want my tombstone to say:
> > Unknown Application Error in Dean Wampler.exe.
> > Application Terminated.
> > [Okay] [Cancel]
> >
> >
> >
> >
> > _______________________________________________
> > aspectj-users mailing list
> > aspectj-users@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/aspectj-users
> >
> >
>
>
>
> --
> 'Tomorrow's what i am waiting for, but i can wait a little more' - Calvin
> (Bill Watterson) ________________________________
>
> _______________________________________________
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>
>
> --
> Sérgio Agostinho
> Research Assistant
>
> CITI - Centre for Informatics and Information Technologies
> Faculdade de Ciências e Tecnologia
> Monte da Caparica
> 2829-516 Caparica
> Portugal
>
> E-mail: sergioag@xxxxxxxxxxxxx
> URL: http://citi.di.fct.unl.pt
> Phone: +351 21 2948300 (ext. 10771)
>
>
> _______________________________________________
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>
>
--
'Tomorrow's what i am waiting for, but i can wait a little more' -
Calvin (Bill Watterson)
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