weaving aspects into applets

[harryiam42]

hi!

alas my searching skills appear rather weak as i can find no advice on how to weave aspects into applets. we have a successfully woven some test advice into a straight up java application, but when i tried it with an applet it just ignored the advice. here is the command i'm using

appletviewer -J-javaagent:/usr/local/jboss-aop-2.0.1.GA/lib/jboss-aop.jar -J-Djboss.aop.path=... -J-classpath -J.:/usr/local/jboss-aop-2... foo.html

for reference the following works

java -javaagent:/usr/local/jboss-aop-2.0.1.GA/lib/jboss-aop.jar -Djboss.aop.path... -classpath .:/usr/local/jboss-aop-2... foo

thanks in advance
- harry

[flavia.rainone]

It appears that the appletviewer is not compatible with our javaagent?

Have you tried using aopc instead?

[harryiam42]

thanks for the reply. we have not tried aopc yet, but will give it a go!

cheers
- harry

[harryiam42]

alas the aopc route has not yet lead to happiness. in short i get the error

java.lang.ExceptionInInitializerError
 at AnApple$AnAppleAdvisor.<init>(AnApple$AnAppleAdvisor.java)
 at AnApple.<clinit>(AnApple.java)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

below is a more detailed trace of what i tried in case you have the time to take a look.

thanks muchly
- harry

% more jboss-aop.xml
<?xml version="1.0" encoding="UTF-8"?>
<aop>
 <bind pointcut="execution(*->new(..))">
 <interceptor class="ConstructorInterceptor"/>
 </bind>
</aop>

% more AnApple.java
import javax.swing.*;

class Apple { Apple() {} }

public class AnApple extends JApplet
{
 public void init() { Apple a = new Apple(); }
 public static void main(String [] args) { Apple a = new Apple(); }
}

% /usr/local/bin/javac AnApple.java
(i also tried javac -target 1.4 -source 1.4 with the same result)

% /usr/local/jdk1.6.0_02/jre/bin/java -Djboss.aop.optimized=true -Djboss.aop.path=jboss-aop.xml -classpath .:/usr/local/jboss-aop-2.0.1.GA/lib/javassist.jar ... org.jboss.aop.standalone.Compiler -suppress -aoppath jboss-aop.xml AnApple.class Apple.class

Build Successful: 553 ms

% /usr/local/bin/java -javaagent:/usr/local/jboss-aop-2.0.1.GA/lib/jboss-aop.jar -Djboss.aop.path=jboss-aop.xml -classpath .:/usr/local/jboss-aop-2.0.1.GA/... AnApple

*** creaation of *** Apple java.lang.Object
(this is good :) )

% more t.html
<applet code="AnApple.class" width=400 height=400> </applet>

% /usr/local/bin/appletviewer -J-Djboss.aop.path=jboss-aop.xml -J-classpath -J.:/usr/local/jboss-aop-2.0.1.GA/... t.html

java.lang.ExceptionInInitializerError
 at AnApple$AnAppleAdvisor.<init>(AnApple$AnAppleAdvisor.java)
 at AnApple.<clinit>(AnApple.java)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
 at java.lang.Class.newInstance0(Class.java:355)
 at java.lang.Class.newInstance(Class.java:308)
 at sun.applet.AppletPanel.createApplet(AppletPanel.java:779)
 at sun.applet.AppletPanel.runLoader(AppletPanel.java:708)
 at sun.applet.AppletPanel.run(AppletPanel.java:362)
 at java.lang.Thread.run(Thread.java:619)
Caused by: java.security.AccessControlException: access denied (java.lang.RuntimePermission createClassLoader)
 at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
 at java.security.AccessController.checkPermission(AccessController.java:546)
 at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
 at java.lang.SecurityManager.checkCreateClassLoader(SecurityManager.java:594)
 at java.lang.ClassLoader.<init>(ClassLoader.java:225)
 at java.security.SecureClassLoader.<init>(SecureClassLoader.java:76)
 at java.net.URLClassLoader.<init>(URLClassLoader.java:113)
 at org.jboss.aop.AspectManager.<clinit>(AspectManager.java:184)
 ... 12 more