Hi,
Yes that was my wery wery first attemt but something is wrong since it will always end
up in a exception (see below). That is why i started to try out interception of the
proxy itself (but failed). At last I did generate my own proxy over the JBOSS proxy
and tried to advice such but failed as well (see below for code snippets).
I know you do not have much time but please could you bring some light on my other
questions as well. There's a question below within the code as well.
Many Regards,
Mario
--------------------- call pointcut exception --------------------------
BeanIf:
package se.dataductus.aopdemo.security;
public interface Dummy extends javax.ejb.EJBObject
{
public void DummyMethod() throws java.rmi.RemoteException;
}
This is the pointcut:
....and the Exception:
test-security:
[java] java.lang.ExceptionInInitializerError
[java] Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.NullPointerException
[java] at org.jboss.aop.ClassAdvisor.attachClass(ClassAdvisor.java:207)
[java] at org.jboss.aop.AspectManager.getAdvisor(AspectManager.java:351)
[java] at se.dataductus.aopdemo.security.TestSecurity.(TestSecurity.java)
[java] Caused by: java.lang.RuntimeException: java.lang.NullPointerException
[java] at org.jboss.aop.pointcut.MethodMatcher.visit(MethodMatcher.java:189)
[java] at org.jboss.aop.pointcut.ast.ASTAll.jjtAccept(ASTAll.java:21)
[java] at org.jboss.aop.pointcut.MatcherHelper.visit(MatcherHelper.java:70)
[java] at org.jboss.aop.pointcut.MatcherHelper.matches(MatcherHelper.java:65)
[java] at
org.jboss.aop.pointcut.PointcutExpression.matchesExecution(PointcutExpression.java:80)
[java] at org.jboss.aop.ClassAdvisor.resolveMethodPointcut(ClassAdvisor.java:264)
[java] at
org.jboss.aop.ClassAdvisor.createInterceptorChains(ClassAdvisor.java:432)
[java] at org.jboss.aop.ClassAdvisor.attachClass(ClassAdvisor.java:202)
[java] ... 2 more
[java] Caused by: java.lang.NullPointerException
[java] at
org.jboss.aop.annotation.PortableAnnotationElement.isAnyAnnotationPresent(PortableAnnotationElement.java:112)
[java] at
org.jboss.aop.annotation.PortableAnnotationElement.isAnyAnnotationPresent(PortableAnnotationElement.java:105)
[java] at org.jboss.aop.pointcut.MethodMatcher.visit(MethodMatcher.java:185)
[java] ... 9 more
[java] Exception in thread "main"
BUILD FAILED: C:\progs\java\workspace\aopdemo\build.xml:45: Java returned: 1
------------------------- Intercepting a created subclass ------------------
Advising and adding instance interceptor:
AdviceBinding binding = new AdviceBinding("execution(* $instanceof{" + csBeanIf +
"}->*(..))",null);
binding.addInterceptor(ClientCLSBMethodInvokerInterceptor.class);
AspectManager.instance().addBinding(binding);
>
> When adding the binding it will do a softmatch and in the
> private Object matchClass(ClassExpression classExpression)
> the clazz is not the generated subtype instead it is the pure class
> of which i've done a copy from (and derived). It will fail to add
> the new interceptor.
>
> I must admit that I do not understand how to add a instance advisor
> and trigger it by an expression since the AdvisorBinding is taking the
> interceptor class. On the instance I can get the instance advisor to
> add a interceptor instance to the interceptor stack...
>
> The question is how do I add a interceptor instance that gets invoked
> by an advise?
>
Advised advised = (Advised)obj;
advised._getInstanceAdvisor().insertInterceptor(new
ClientCLSBMethodInvokerInterceptor());
Code to write subclass with ejbIf:
CtClass cls =
cp.makeClass(csClassName,cp.get("se.dataductus.aopdemo.util.ClientSLSB"));
CtClass clsIf = cp.get(csBeanIf);
cls.addInterface(clsIf);
cls.makeClassInitializer();
CtField fld = CtField.make("private " + csBeanIf + " _bean = null;
",cls);
cls.addField(fld);
String csMeth = "private " + csBeanIf + " _resolveBean() { if ( null
== this._bean) { this._bean = super.resolve(); } return this._bean; }";
CtMethod meth = CtNewMethod.make(csMeth,cls);
cls.addMethod(meth);
CtMethod []m = clsIf.getDeclaredMethods();
for(int i = 0;i < m.length;i++)
{
meth =
CtNewMethod.make(m.getReturnType(),m.getName(),m.getParameterTypes(),m.getExceptionTypes(),this.writeMethod(m),cls);
cls.addMethod(meth);
}
cls.writeFile();
return cls;
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http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3839497
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