2 Replies Latest reply on Aug 12, 2009 1:34 PM by kabirkhan

Does Aop-Precompiling effect Loadtime Weaving (Performance)?

dermas Aug 11, 2009 11:30 AM

I am just wondering if the loadtime weaving process recognizes the precompiled classes from the aopc Ant Task.

Let's say we have class Foo which is already precompiled with aopc. If I use this class with loadtime weaving, will the loadtime weaving process notice that there are already the weaved classfiles like Foo$Jointpoint_Bar*.class or does it ignore them and weave the class again?

Or do ask in general, do already precompiled files have any effect on loadtime weaving?

Thanks :)

1. Re: Does Aop-Precompiling effect Loadtime Weaving (Performan

dermas Aug 12, 2009 11:54 AM (in response to dermas)

I have found the following statement in the docs:

"It is also perfectly reasonable to mix and match compile time and load time though. If you have load-time transformation enabled, precompiled aspects are not transformed when they are loaded and ignored by the classloader transformer."

But I guess that does not really have an impact on the performance. If I have only 10 classes which get weaved and 200 that dont, loadtime weaving still consumes almost the same amount of time, because it has to scan all the 200 files that are not going to be weaved.

Is this opinion right?
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2. Re: Does Aop-Precompiling effect Loadtime Weaving (Performan

kabirkhan Aug 12, 2009 1:34 PM (in response to dermas)

Yes
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