"alesj" wrote : "david.lloyd(a)jboss.com" wrote :
| | Far simpler than designing a plugin mechanism for restrictions is to simplify the
API so that you just give it the input streams of classes you want to index. Simplfying
the API is usually preferable to adding an abstraction.
| |
| A? What kind of nonsense is this?
|
| And how do you plan on providing this streams?
| Via abstraction!!!!
|
No, I'm saying rather than having the scanner pull in the classes, the API consumer
pushes the classes into the scanner. This way you don't have to worry about missing
use cases when you design the abstraction. This way, Papaki is less limited by usage
patterns.
Case in point, say Papaki depends on VFS and uses that project's visitor system to
scan classes. Now later on we want to scan classes that are not found on VFS (maybe
they're being downloaded). In this case, tying to VFS was an arbitrary restriction
that we pay for later since now all classes have to be wedged in there whether it makes
sense or not. On the other hand, if we push classes in, then both use cases are easily
accommodated.
"alesj" wrote : [Or how else are you gonna know which one's should or
shouldn't be scanned?
| Should I list them by hand, all of the 1M classes?
| Or what about if tomorrow Sun speeds up its modules impl,
| and we all start doing module-info.java?
This logic would be something that belongs in the module-loading layer (which is currently
spread between deployers and classloading as far as I can tell), not in the scanning
layer. The scanning layer does not have semantic awareness of what should or should not
be scanned, so there's no reason to push this functionality into it. Let it do one
thing well.
"alesj" wrote : "david.lloyd(a)jboss.com" wrote :
| | The specifications for many of our components (like EJB 3.1) tell us that we
can't rely on this, or at least that's my understanding from the developer meeting
when we decided we had to do it this way.
| Then I would say this is their problem.
| Who ever doesn't have automated build, has either just started programming or is
moro....
| The first one's don't need this feature yet, the 2nd one's don't
deserve it. ;-)
|
That's a valid opinion, but it doesn't help us meet the requirements that we have
spelled out for us, which include (but are not limited to) performance improvement and
complete support for these specs.
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