Re: [aspectj-users] struts

[DAVID SUAREZ <davidsuarez@xxxxxxxxxxxxx>]

Interesting example.  For J2EE web applications there is already the ability
to intercept well-known entry/exit calls using filters.

Does anyone have any pros/cons of using filters vs. aspects for an example
like the below (security in struts)?  If the security object is already
encapsulated it could in theory also be used by aspect oriented code in
different layers/applications if there was a need at some point.

I know it's too general of a question but I'm wondering how stable aspectJ
is at this point.  I've been dabbling and I have read recent messages where
1.0 syntax is no longer applicable in 1.1 (I can't find on the website how
old 1.0 is compared to 1.1 though).  Is 1.1 at a level where backward
compatibility will be kept or is that reserved for a future release?  I
think it would be an important thing to know and haven't seen any
documentation either way.  With J2EE standards like web filters I can almost
guarantee that they will be around for a very long time and work the same
since Java has been such a good example of remaining backward compatible.

Please don't misunderstand the above message.  I am really enjoying the
technology and know alot of wonderful applications already using AOP but i'm
wondering relatively how ready it is for "prime-time" when an alternative
viable solution exists that is just as loosely coupled.

Would appreciate your feedback.

Regards...djsuarez

----- Original Message ----- 
From: "Michael Oliver" <oliverm@xxxxxxxxxxxxxxxx>
To: <aspectj-users@xxxxxxxxxxx>
Sent: Thursday, February 05, 2004 4:54 PM
Subject: Re: [aspectj-users] struts


> Perhaps, but it is one of those subjects that a little is not enough and
> a little more is too much.
>
> Security is one thing I have found AJ to be specifically good at.  You
> could write security into every 'Action' class and many do, and/or write
> it into every JSP page and many do.  With AspectJ I can look at every
> Action class and they all have an execute method and I can write a
> single aspect that crosscuts every action and does a security check and
> if the security check fails I can return from my action a forward to a
> login page or other security action.  Then later if I change security
> from Tomcat realms to LDAP to BEA, I don't have to modify any of my
> actions, just recompile with a different aspect.
>
> So, Nicolai, is this too little or too much?
>
> Ollie
>
> On Thu, 2004-02-05 at 14:38, sdojfloasdj wrote:
> > Hi,
> >
> > does anyone can provide me an little example, how to use AspectJ in the
> > struts framework?
> >
> > Thanks,
> >
> > Nicolai
> >
> >
> > ---- 
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