Ok,
Ive changed this to match the following
pointcut handleException(Message m):
call (* myBean.onMessage(Message)) && args(m);
after(Message m) throwing (Exception ex): handleException(m)
{
//handle exception here
}
However, the pointcuts doesnt seem to get matched... have I got this all wrong?
I want to be able to access the message inside the handler, prefereably.
Andy
----- Original Message ----
From: Dean Wampler <[EMAIL PROTECTED]>
To: [email protected]
Sent: Monday, 29 September, 2008 1:21:14 PM
Subject: Re: [aspectj-users] catching container managed transactions
Andy,
A little more information you might find useful. Since you print a message with
the exception, you'll need to "bind" it with the "throwing":
after() throwing(Exception ex): mypointcut() {
System.out.println("Error here, guv" + e);
}
Also, just to be clear, if you actually wanted to recover from the exception,
you can't do that with after throwing. The exception will still get thrown up
the stack. To recover, you would have to use around advice.
dean
On Sep 29, 2008, at 7:00 AM, <[EMAIL PROTECTED]> wrote:
Hi
You are using an around advice:
void around(Message m) throws Exception: handleException(m)
{
try
{
proceed(m);
}
catch(Exception e)
{
System.out.println("Error here,guv "+e);
throw e;
}
}
the alternativ is using an after advice with a throwing clause. That means that
the advice is only executed if your pointcut throws an exception.
after() throwing: mypointcut() {
//handle exception here
}
mvh
Hermod
________________________________
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Monday, September 29, 2008 1:37 PM
To: [email protected]
Subject: Re: [aspectj-users] catching container managed transactions
Im not sure i follow, can you give a quick 1-liner example, or point me to a
relevant doco?
thanks.
Andrew
----- Original Message ----
From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
To: [email protected]
Sent: Monday, 29 September, 2008 9:55:30 AM
Subject: RE: [aspectj-users] catching container managed transactions
Hi
Why don't you use "after returning throwing" instead of around advice.
Hermod
________________________________
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Monday, September 29, 2008 10:31 AM
To: [email protected]
Subject: [aspectj-users] catching container managed transactions
Hi
I have a message driven bean which, inherently, throws an exception back to the
container to rollback jms messsages.
I want to be able to catch this exception, log something, and then let the
exception carry on.
I have a pointcut defined as follows:
pointcut handleException(Message m):
call (* myBean.onMessage(Message)) && args(m);
With the advice being:
void around(Message m) throws Exception: handleException(m)
{
try
{
proceed(m);
}
catch(Exception e)
{
System.out.println("Error here,guv "+e);
throw e;
}
}
My question is two-fold:
1) Can we throw the exception like this and will the throw go back to the
container managed transaction??
2) Is this the right way to do this kind of thing? (im assuming not, as the
advice is marked as 'Not matched', but maybe this is one for the ajdt guys.)
Sorry - im completely new to this stuff....
Regards,
Andy
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http://www.objectmentor.com
See also:
http://www.polyglotprogramming.com Multi-language and multi-paradigm
programming
http://www.aspectprogramming.com AOP advocacy site
http://aquarium.rubyforge.org AOP for Ruby
http://www.contract4j.org Design by Contract for Java5
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