Re: [aspectj-users] Intertype declarations results in too long names

[Dave Whittaker <dave@xxxxxxxxxx>]

Just thought I'd throw in here with a case where I've ran into  
problems with this... JPA.  If you have common fields you want to  
inject into an entity you might try to do something like

private String CommonInterface.commonField

And expect at runtime that will result in a db column named  
common_field, or whatever else your naming strategy comes up with.   
Sure you could use the @Column annotation and explicitly give it a  
name, but that adds in a declare statement and it is definitely a bit  
confusing when you first run across the issue.  JPA is not the only  
framework to do this type of reflection these days, Seam's @In  
injection is another one that tries to determine a value based on the  
name of the field.

Of course i imagine this was done to avoid naming collisions when you  
receive fields from multiple ITDs and I'm not sure I see a better  
solution.

On Nov 2, 2009, at 5:03 PM, Andrew Eisenberg wrote:

> Hi,
>
> The ajc$interField$mypack_mysubpack_MyAspect$id is internal and not
> expected to be directly referenced in the source code.  It is only
> needed for the byte code (i.e., you should not be concerned with it).
> All you need to know is that the declaration declares an Integer field
> 'id' on MyClass that is private to the aspect (ie- it is not
> accessible anywhere outside the aspect).
>
> Unless you require knowledge about the byte code, the byte code name
> should not be of concern to you.  However, if you do require knowledge
> about the byte code, please explain what that is and perhaps we can
> help you.
>
> --a
>
> On Mon, Nov 2, 2009 at 2:45 PM, db <dbconrado@xxxxxxxxx> wrote:
> > Hi All,
> >
> > I have an intertype declaration like this:
> >
> > private Integer MyClass.id;
> >
> > but, when it was compiled/weaved, this attribute receive the name:
> > ajc$interField$mypack_mysubpack_MyAspect$id.
> > I want MyClass receive an id attribute and not a ajc$...$id  
> > attribute.
> > How to do it?
> >
> > Thanks!
> >
> > PS: Sorry for my poor English. It isn't my native language :).
> >
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