[aspectj-users] register definition failed/Problem processing attributes

[Hemal Pandya <hemal.pandya@xxxxxxxxx>]

Hi All,

Prompted by a question on stackoverflow, I was trying to see if AspectJ can change the class that is being instantiated.  I wouldn't have been surprised if it cannot be done, but the error I am getting is pretty strange.

I have two classes  R and R1 (extends R) and using an aspect I am trying to create an R1 instead of R. I stumbled on infinite recursion but when I tried to work around it by using a thread local, I got error as follows. My questions:

1. Is it possible to replace object that is (to be) constructed like I am doing?
2. I am pretty sure the ThreadLocal I am using is not the correct way to avoid recursion. What is the correct way?

***R.java***
public class R{ 
  public static void main(String[] args) {System.out.println(new R().getClass().getName());}
}

***R1.java***
public class R1 extends R {}

***RAj.aj***
public aspect RAj
{
    private ThreadLocal<Object> inAspect = new ThreadLocal<Object>();
    
    pointcut createR() : execution(R.new());
    Object around() : createR()
    {
        System.out.println("aspect:" + inAspect.get() + ":" + this);
        if (inAspect.get() != null)
        {
            return proceed();
        }
        else
        {
            inAspect.set(this);
            return new R1();
        }
    }
}


compile command:
/cygdrive/c/Program\ Files/Java/aspectj-1.6.12/bin/ajc.bat -source 1.7 -outxml -outjar araj.jar -classpath "aspectjrt.jar;." RAj.aj 

run:

/cygdrive/c/Program\ Files/Java/aspectj-1.6.12/bin/aj5.bat  -classpath ".;./araj.jar" R

errors:
Apr 06, 2012 1:37:40 PM org.aspectj.weaver.tools.Jdk14Trace error
SEVERE: register definition failed
java.lang.RuntimeException: Problem processing attributes in RAj
    at org.aspectj.weaver.bcel.BcelObjectType.ensureAspectJAttributesUnpacked(BcelObjectType.java:385)
    at org.aspectj.weaver.bcel.BcelObjectType.<init>(BcelObjectType.java:162)
    at org.aspectj.weaver.bcel.BcelWorld.buildBcelDelegate(BcelWorld.java:394)
    at org.aspectj.weaver.bcel.BcelWorld.resolveDelegate(BcelWorld.java:389)
    at org.aspectj.weaver.ltw.LTWWorld.resolveDelegate(LTWWorld.java:107)
    at org.aspectj.weaver.World.resolveToReferenceType(World.java:485)
    at org.aspectj.weaver.World.resolve(World.java:326)
    at org.aspectj.weaver.bcel.BcelWeaver.addLibraryAspect(BcelWeaver.java:159)
    at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerAspects(ClassLoaderWeavingAdaptor.java:470)
    at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerDefinitions(ClassLoaderWeavingAdaptor.java:295)
    at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:181)
    at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:277)
    at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:282)
    at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:260)
    at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:91)
    at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:54)
    at sun.instrument.TransformerManager.transform(TransformerManager.java:188)
    at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:424)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:476)
Caused by: org.aspectj.weaver.BCException: malformed org.aspectj.weaver.PointcutDeclaration attribute (length:73)org.aspectj.weaver.BCException: Bad type signature org.aspectj.weaver.WeaverState


    at org.aspectj.weaver.AjAttribute.read(AjAttribute.java:137)
    at org.aspectj.weaver.bcel.Utility.readAjAttributes(Utility.java:101)
    at org.aspectj.weaver.bcel.BcelObjectType.ensureAspectJAttributesUnpacked(BcelObjectType.java:381)
    ... 30 more

[AppClassLoader@1284903] warning register definition failed -- (RuntimeException) Problem processing attributes in RAj
Problem processing attributes in RAj
java.lang.RuntimeException: Problem processing attributes in RAj
    at org.aspectj.weaver.bcel.BcelObjectType.ensureAspectJAttributesUnpacked(BcelObjectType.java:385)
    at org.aspectj.weaver.bcel.BcelObjectType.<init>(BcelObjectType.java:162)
    at org.aspectj.weaver.bcel.BcelWorld.buildBcelDelegate(BcelWorld.java:394)
    at org.aspectj.weaver.bcel.BcelWorld.resolveDelegate(BcelWorld.java:389)
    at org.aspectj.weaver.ltw.LTWWorld.resolveDelegate(LTWWorld.java:107)
    at org.aspectj.weaver.World.resolveToReferenceType(World.java:485)
    at org.aspectj.weaver.World.resolve(World.java:326)
    at org.aspectj.weaver.bcel.BcelWeaver.addLibraryAspect(BcelWeaver.java:159)
    at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerAspects(ClassLoaderWeavingAdaptor.java:470)
    at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.registerDefinitions(ClassLoaderWeavingAdaptor.java:295)
    at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:181)
    at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:277)
    at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:282)
    at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:260)
    at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:91)
    at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:54)
    at sun.instrument.TransformerManager.transform(TransformerManager.java:188)
    at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:424)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:476)
Caused by: org.aspectj.weaver.BCException: malformed org.aspectj.weaver.PointcutDeclaration attribute (length:73)org.aspectj.weaver.BCException: Bad type signature org.aspectj.weaver.WeaverState


    at org.aspectj.weaver.AjAttribute.read(AjAttribute.java:137)
    at org.aspectj.weaver.bcel.Utility.readAjAttributes(Utility.java:101)
    at org.aspectj.weaver.bcel.BcelObjectType.ensureAspectJAttributesUnpacked(BcelObjectType.java:381)
    ... 30 more