[jboss-dev-forums] [Design of AOP on JBoss (Aspects/JBoss)] - AOPConstructorJoinpoint and methodHasSubInstanceMetaData

[adrian@jboss.org]

While looking at this issue:
http://www.jboss.com/index.html?module=bb&op=viewtopic&t=139622

I noticed something funny.

These are showing up as a minor hotspot during a boot/shutdown of jboss

  | java.lang.Class.getMethod(Class.java:1581)
  | org.jboss.metadata.plugins.loader.reflection.AnnotatedElementMetaDataLoader.getComponentMetaDataRetrieval(AnnotatedElementMetaDataLoader.java:146)
  | org.jboss.metadata.plugins.context.AbstractMetaDataContext.getComponentMetaDataRetrieval(AbstractMetaDataContext.java:276)
  | org.jboss.metadata.spi.retrieval.MetaDataRetrievalToMetaDataBridge.getComponentMetaData(MetaDataRetrievalToMetaDataBridge.java:160)
  | org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.methodHasSubInstanceMetaData(AOPConstructorJoinpoint.java:172)
  | org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.rootHasMethodWithSubInstanceMetaData(AOPConstructorJoinpoint.java:150)
  | org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.rootHasSubInstanceMetaData(AOPConstructorJoinpoint.java:130)
  | org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.dispatch(AOPConstructorJoinpoint.java:93)       org.jboss.beans.info.plugins.AbstractBeanInfo.newInstance(AbstractBeanInfo.java:269)
  | org.jboss.beans.info.plugins.AbstractBeanInfo.newInstance(AbstractBeanInfo.java:263)
  | 
  | java.lang.Class.getMethod(Class.java:1581)        org.jboss.metadata.plugins.loader.reflection.AnnotatedElementMetaDataLoader.getComponentMetaDataRetrieval(AnnotatedElementMetaDataLoader.java:146)        org.jboss.metadata.plugins.context.AbstractMetaDataContext.getComponentMetaDataRetrieval(AbstractMetaDataContext.java:276)        org.jboss.metadata.spi.retrieval.MetaDataRetrievalToMetaDataBridge.getComponentMetaData(MetaDataRetrievalToMetaDataBridge.java:160)        org.jboss.aop.microcontainer.integration.AOPDependencyBuilder.getMetaDataMethodAnnotationDependencies(AOPDependencyBuilder.java:234)        org.jboss.aop.microcontainer.integration.AOPDependencyBuilder.getMethodAnnotationDependencies(AOPDependencyBuilder.java:211)        org.jboss.aop.microcontainer.integration.AOPDependencyBuilder.getAnnotationDependencies(AOPDependencyBuilder.java:154)        org.jboss.aop.microcontainer.integration.AOPDependencyBuilder.getDependencies(AOPDependencyBuilder.java:132)        org.jboss.kernel.plugins.dependency.DescribeAction.uninstallActionInternal(DescribeAction.java:94)        org.jboss.kernel.plugins.dependency.InstallsAwareAction.uninstallAction(InstallsAwareAction.java:157)
  | 

What's funny is I'm also seeing this


  | java.lang.Throwable.fillInStackTrace(Throwable.java:Unknown line)
  | java.lang.Throwable.<init>(Throwable.java:196)
  | java.lang.Exception.<init>(Exception.java:41)
  | java.lang.NoSuchMethodException.<init>(NoSuchMethodException.java:32)
  | java.lang.Class.getMethod(Class.java:1581)       org.jboss.metadata.plugins.loader.reflection.AnnotatedElementMetaDataLoader.getComponentMetaDataRetrieval(AnnotatedElementMetaDataLoader.java:146)        org.jboss.metadata.plugins.context.AbstractMetaDataContext.getComponentMetaDataRetrieval(AbstractMetaDataContext.java:276)        org.jboss.metadata.spi.retrieval.MetaDataRetrievalToMetaDataBridge.getComponentMetaData(MetaDataRetrievalToMetaDataBridge.java:160)        org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.methodHasSubInstanceMetaData(AOPConstructorJoinpoint.java:172)        org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.rootHasMethodWithSubInstanceMetaData(AOPConstructorJoinpoint.java:150)
  | 

NOTE: This is just using hprof to run cpu samples,
so I'm guessing the reason for the hotspot is that it is constructing
the exception a lot.

The sampling (at 10ms intervals)  caught it 5 times in the example I'm quoting from.

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