Yeah, you would and the hugh down side to it, is that you would have to introduce a buddy class for each real class, thereby just making the implementation of the aspects tightly coupled to the classes. I think he generic aspect with the map implementation is the right way to go.
Ron DiFrango Director / Architect | CapTech (804) 855-9196 | [email protected]<https://email4.captechventures.com/owa/UrlBlockedError.aspx> From: y a <[email protected]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Saturday, March 9, 2013 10:29 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [aspectj-users] Adding a new buddy field for EVERY existing field in a class ?! Thanks Ron About this shaodw class... Even if i have a shadow class for each original class The set() advice still need runtime reflection or a switch statement to set the shadow field ?! I cant find too many examples on set()/get() UPDATE The map solution is easy and works I thought about injecting a buddy *object* into each real object (i.e. no new classes), using aspectj to skip all method execution, and only use the fields for storage. Is there some execution side effect which i wont be able to skip? TIA On Sat, Mar 9, 2013 at 4:20 PM, Ron DiFrango <[email protected]<mailto:[email protected]>> wrote: Without creating a aspectj shadow class that gets "injected" via an intertype declaration, I don't see a way to do it without reflection and/or using the map approached referenced in your post. Ron DiFrango Director / Architect | CapTech (804) 855-9196<tel:%28804%29%20855-9196> | [email protected]<https://email4.captechventures.com/owa/UrlBlockedError.aspx> ________________________________ From: [email protected]<mailto:[email protected]> [[email protected]<mailto:[email protected]>] on behalf of y a [[email protected]<mailto:[email protected]>] Sent: Saturday, March 09, 2013 7:18 AM To: [email protected]<mailto:[email protected]> Subject: [aspectj-users] Adding a new buddy field for EVERY existing field in a class ?! I want an aspect to store the old value for each field set operation So if a class has 3 long fields, i now need 3 new fields in the aspect Is this possible ?! And is there a suitable ajc syntax to access such a buddy field in a set() advice ? my example: aspect to "print" the field changes, but i need the new fields to "store" the values import java.io.*; import org.aspectj.lang.reflect.FieldSignature; aspect AspectField { before(long newval): set(long *) && args(newval) { FieldSignature fs; fs = (FieldSignature)thisJoinPointStaticPart.getSignature(); System.out.println(fs.getFieldType()); System.out.println("FIELD SET TO " + newval); // i want to store the newval here in a "buddy field" } } [[ Eventually i want all of this to be done statically with out reflection but one bridge at a time.. ]] [[ http://stackoverflow.com/questions/6698203/exposing-previous-value-in-aspectj-set-pointcut - this discussion stores all the fields in a single map - i dis like solution for performance.. ]] TIA _______________________________________________ aspectj-users mailing list [email protected]<mailto:[email protected]> https://dev.eclipse.org/mailman/listinfo/aspectj-users
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