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12.6. Loadtime transformation in the JBoss Enterprise Application Platform Using Sun JDK


The JBoss Enterprise Application Platform has special integration with JDK to do loadtime transformations. This section explains how to use it.
If you want to do load-time transformations with JBoss Enterprise Application Platform 5 and Sun JDK, these are the steps you must take.
  • Set the enableLoadtimeWeaving attribute/property to true. By default, JBoss Enterprise Application Platform will not do load-time bytecode manipulation of AOP files unless this is set. If suppressTransformationErrors is true, failed bytecode transformation will only give an error warning. This flag is needed because sometimes a JBoss deployment will not include all of the classes referenced.
  • Copy the pluggable-instrumentor.jar from the lib/ directory of your JBoss AOP distribution to the bin/ directory of your JBoss Enterprise Application Platform.
  • Next edit run.sh or run.bat (depending on what OS you are on) and add the following to the JAVA_OPTS environment variable:
    set JAVA_OPTS=%JAVA_OPTS% -Dprogram.name=%PROGNAME% -javaagent:pluggable-instrumentor.jar
    
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Important

The class of the AspectManager Service must be org.jboss.aop.deployers.AspectManagerJDK5 or org.jboss.aop.deployment.AspectManagerServiceJDK5 as these are what work with the -javaagent option.
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