AOP with scala

  I'm writing a framwork that needs to intercept getter and setter calls
on external scala classes (classes that will be written by users of the
framework). It seems that there is no feature to do this in the language,
is this correct ?
I know some form of interception can be done using implicit conversions,
but it seems that for a generic interception mechanism, one still needs an
AOP framework like AspectWerks ...

 Has anyone used an AOP framework with scala ?  Any recommendations
on which one ?

 Thanks

Hi.

I wrote a blog post about an AOP framework that I wrote on top of
AspectJ together with mixin composition.
http://jonasboner.com/2008/02/06/aop-style-mixin-composition-stacks-in-s...

The code is OSS and available here:
http://github.com/jboner/skalman

Also, I'm using AspectWerkz in the Akka Transactors project now with
great success.

/Jonas

2009/9/22 Maxime Lévesque :
>
>   I'm writing a framwork that needs to intercept getter and setter calls
> on external scala classes (classes that will be written by users of the
> framework). It seems that there is no feature to do this in the language,
> is this correct ?
> I know some form of interception can be done using implicit conversions,
> but it seems that for a generic interception mechanism, one still needs an
> AOP framework like AspectWerks ...
>
>  Has anyone used an AOP framework with scala ?  Any recommendations
> on which one ?
>
>  Thanks
>

Hi.

I wrote a blog post about an AOP framework that I wrote on top of
AspectJ together with mixin composition.
http://jonasboner.com/2008/02/06/aop-style-mixin-composition-stacks-in-scala.html

The code is OSS and available here:
http://github.com/jboner/skalman

Also, I'm using AspectWerkz in the Akka Transactors project now with
great success.

/Jonas

2009/9/22 Maxime Lévesque <maxime.levesque@gmail.com>:
>
>   I'm writing a framwork that needs to intercept getter and setter calls
> on external scala classes (classes that will be written by users of the
> framework). It seems that there is no feature to do this in the language,
> is this correct ?
> I know some form of interception can be done using implicit conversions,
> but it seems that for a generic interception mechanism, one still needs an
> AOP framework like AspectWerks ...
>
>  Has anyone used an AOP framework with scala ?  Any recommendations
> on which one ?
>
>  Thanks
>



--
Jonas Bonér

twitter: @jboner
blog:    http://jonasboner.com
work:   http://crisp.se
work:   http://scalablesolutions.se
code:   http://github.com/jboner
code:   http://akkasource.org

2009/9/22 Maxime Lévesque :
> Has anyone used an AOP framework with scala ?  Any recommendations
> on which one ?

The Scala IDE for Eclipse uses AspectJ extensively.

Cheers,

Miles

2009/9/22 Maxime Lévesque <maxime.levesque@gmail.com>:
> Has anyone used an AOP framework with scala ?  Any recommendations
> on which one ?

The Scala IDE for Eclipse uses AspectJ extensively.

Cheers,


Miles

--
Miles Sabin
tel: +44 (0)7813 944 528
skype:  milessabin
http://www.chuusai.com/
http://twitter.com/milessabin

2009/9/22 Dean Wampler :
> You use it to advise the Java code in the JDT, right?

Right. The advice typically calls out to Scala code via Java interfaces.

> Do you also use it to advise Scala code?

I don't currently because when I initially tried to mix Scala and
AspectJ in a single project ajc (the AspectJ compiler) choked on the
bytecode generated by Scala constructs which were then heavily used in
the IDE (specifically, early initializers). But I think things might
have changed since then and I know of several people who are mixing
Scala and AspectJ directly.

> If so, any particular gotchas? In the book section, I discuss the issue
> of "name mangling", e.g., a "+" method has to be referred to as "$plus"
> in an AspectJ pointcut.

This is the exact same encoding you would need to use to interact with
Scala from vanilla Java.

Cheers,

Miles