Heavy loading of jaxb classes

Hi,

We need to use the latest jaxb 2.1 libraries in our application. We are using netweaver 7.1 CE and it seems to ship with jaxb 2.0 libs. (file:/usr/sap/CE7/J00/j2ee/cluster/bin/ext/jaxb20/jaxb-impl.jar)

We are already using heavy loading for the hibernate classes, and I assumed I could to the same for jaxb. The dump of the heavy loaded classes from telnet is as follows:

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/javassist-3.4.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/hibernate-entitymanager-3.3.2.GA.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/asm-1.5.3.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/antlr-2.7.6.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/commons-collections-3.1.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/hibernate-commons-annotations-3.0.0.GA.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/jaxb-xjc-2.1.7.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/hibernate-annotations-3.3.1.GA.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/jaxb-impl-2.1.7.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/log4j-1.2.15.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/asm-attrs-1.5.3.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/jaxb-api-2.1.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/commons-logging-1.0.4.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/cglib-2.1.3.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/ehcache-1.5.0.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/dom4j-1.6.1.jar

/usr/sap/CE7/J00/j2ee/cluster/apps/sap.com/Manifest/app_libraries_container/lib/hibernate-3.2.6.ga.jar

The jaxb classes is included, but it does not seem that my jaxb libraries is used by my application. I've added a util method to do o lookup of the classloader of the jaxb class that I get hold of in the app, and it is still the original jaxb2.0

Is this the correct approach to use a newer JAXB or is there some other way of doing it?

Regards Jaco