[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
i meant also to say that this should work in JBoss AOP View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3853441#3853441 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3853441 --- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
well, you're gonna have to post the JBoss AOP example... JBoss AOP Aspects can hold state. An instance of the Aspect is created depending on the scope. PER_VM, PER_CLASS, PER_INSTANCE< PER_ JOINPOINT. Bill View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3853440#3853440 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3853440 --- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
If a particular joinpoint is "prepared" you do not have to recompile or even shutdown the JVM to add or remove an advice from a particular joinpoint. You can also add/remove interceptors on a per instance basis at runtime with a prepared joinpoint. How to prepare? This will instrument the class. Also, any other pointcut def will cause the class to be instrumented. Instrumented classes without advices have VERY low overhead. It is one extra method call and a boolean check. You won't even notice it. With JDK 5.0 you do not need a custom classloader. I've written an agent to work with the java.lang.instrument package and it works pretty well. I haven't integrated it with JBoss yet though as I have to change the run script and write some tests. Kevin Conner also wrote something for JDK 1.4 that modifies java.lang.Class to insert the necessary hooks for JBoss AOP. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3848319#3848319 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3848319 --- This SF.Net email is sponsored by: thawte's Crypto Challenge Vl Crack the code and win a Sony DCRHC40 MiniDV Digital Handycam Camcorder. More prizes in the weekly Lunch Hour Challenge. Sign up NOW http://ad.doubleclick.net/clk;10740251;10262165;m ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
In JBoss AOP you can attach things dynamically via the AspectManager class. You need to prepare your class first: http://www.jboss.org/wiki/Wiki.jsp?page=JBossAOP Go to Tutorial/Dynamic AOP View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3848186#3848186 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3848186 --- This SF.Net email is sponsored by: thawte's Crypto Challenge Vl Crack the code and win a Sony DCRHC40 MiniDV Digital Handycam Camcorder. More prizes in the weekly Lunch Hour Challenge. Sign up NOW http://ad.doubleclick.net/clk;10740251;10262165;m ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
Sorry I'm not able to look at this in very much detail right now. Also, look at combining the .jar and .aop in an ear as shown in the tutorial. The tutorial is by now means a complete guide to all possible packaging options, just shows a few configurations I got working. I have to admit I have not tried running it with 3.2.x yet, what happens if you try it with 4.0? Also, for the AspectManagerService MBean config, you should set EnableTransformer to true. Cheers, Kab View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845480#3845480 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845480 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
Thanks a lot. After going through the documentation, I revisited my deployment to match what had been speciifed but I still cant get it to work. First, I created a .aop of my intercepter class (which I verified worked in the stand-alone mode) : | $ jar -tvf SimpleAOP.aop | 0 Tue Aug 17 00:35:46 IST 2004 META-INF/ | 70 Tue Aug 17 00:35:46 IST 2004 META-INF/MANIFEST.MF | 0 Tue Aug 17 00:34:10 IST 2004 classes/ | 0 Tue Aug 17 00:34:10 IST 2004 classes/test/ | 0 Tue Aug 17 00:34:10 IST 2004 classes/test/ejb/ | 1409 Tue Aug 17 00:35:20 IST 2004 classes/test/ejb/SimpleInterceptor.class |177 Tue Aug 17 00:35:14 IST 2004 META-INF/jboss-aop.xml | I modified the $JBOSS_HOME/server/default/conf/jboss-service.xml file to add in the mbean specified in the link : | | | false | | true | | true | false | | | | | |http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845241#3845241 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845241 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
Hi,
Before-After: There is more about this in another post somewhere in this thread, but
basically interception in JBoss AOP is both before and after.
Example:
| public class MyInterceptor implements Interceptor
| {
|public String getName() { return "MyInterceptor"; }
|
|public Object invoke(Invocation invocation) throws Throwable
|{
| Object o = null;
| //You can do "BEFORE" stuff here, e.g.
| long start = System.currentTimeMillis();
|
| //Invoke next method
| o = invocation.invokeNext();
|
| //You can do "AFTER" stuff here, e.g.
| long end = System.currentTimeMillis();
| long timeTaken = end - start;
|
| return o;
|}
| }
|
EJB: It all depends on the packaging. If you get jboss-head from cvs, it contains a
new tutorial showing some options for packaging war and ear applications. Also,
http://www.jboss.org/wiki/Wiki.jsp?page=RunningWithJBossApplicationServer contains
some information on what you need to do to run with JBoss 3.2.5 if you haven't
followed these steps already.
Cheers,
Kab
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[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
Sorry for replying to my own post. Just another query. Would the interception for an EJB be different from that of a pure Java class ? Here is a test I tried. - Created an entity bean with method findWithID(int) and deployed it in JBoss 3.2.5 following the instructions specified. - I defined a pointcut to intercept call to this method but I found that the advice was not being executed. Then I defined a Java class with the same findWithID(int) and found the interception happening fine. Any extra settings required on the JBoss server ? Thanks. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845145#3845145 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845145 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
Thanks Bill, That was very informative. Another query. AspectJ supports the notion of being able to define as to when you need an advice to be executed - before or after. So far as my understanding goes, JBoss AOP appears to be more interception based which appears to say "..when call X is made, execute AspectX first..". Is there support for the before-after like specification provided by AspectJ ? This is important to us when say we want to capture the time taken to execute method X. Using the before-after specifiers facilitates this greatly. Thanks. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3845144#3845144 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3845144 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
Thanks Bill, What do you mean by dynamic? I know that dynamic means different things in the AOP world.. for instance AspectJ folks might say that their CFLOW is dynamic as it collects information as the program is running yet is still to all intents and purposes a compile time technique. I believe Aspectwerkz allows new code to be plugged and unplugged at run time, hence its dynamicism. So what does dynamic mean for JBoss? Cheers Neil "Bill Burke" wrote : Why JBoss AOP over AspectJ? | - 100% pure Java | - annotation support (JDK 1.5 and 1.4) | - Metadata and annotation override facility | - load-time transformations (instead of compile time) | - hotdeployment of aspects (dynamic AOP) | - per-instance API (dynamic AOP) | - dynamic CFLOW | - pluggable pointcuts | - extended pointcut expressions (has and hasfield as well as typedefs). | | I haven't looked at AspectWerkz since February, but they had limited support in their pointcut expression language at the time (no around for field interception, no constructor interception, no annotation support). They did have better load-time transformation support, but we will catch up on this soon. | | Bill | | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3844614#3844614 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3844614 --- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
Why JBoss AOP over AspectJ? - 100% pure Java - annotation support (JDK 1.5 and 1.4) - Metadata and annotation override facility - load-time transformations (instead of compile time) - hotdeployment of aspects (dynamic AOP) - per-instance API (dynamic AOP) - dynamic CFLOW - pluggable pointcuts - extended pointcut expressions (has and hasfield as well as typedefs). I haven't looked at AspectWerkz since February, but they had limited support in their pointcut expression language at the time (no around for field interception, no constructor interception, no annotation support). They did have better load-time transformation support, but we will catch up on this soon. Bill View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3844303#3844303 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3844303 --- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
I'm also interested in this. What are the major reasons for choosing JBoss AOP over AspectJ or even Aspectwerkz? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3843673#3843673 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3843673 --- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
[JBoss-dev] [AOP on JBoss (Aspects/JBoss)] - Re: JBoss AOP vs. AspectJ
Bill is at Java One, and should be able to give a proper answer when he is back. In the meantime: Two people are working on Eclipse support at present, so expect something in that area soon. You can use JBoss AOP with 3.2.4 or higher, docs/misc/running_jboss.html in the distribution shows how. JBoss AOP comes with a set of aspects (with a LOT more to follow) where you can leverage JBoss services. Cheers, Kab View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3840404#3840404 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3840404 --- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com ___ JBoss-Development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
