I want to use hibernate 3.0.2 in my ear under JBoss 4.0.3SP1 without touching
the default install of hibernate in the server/default/lib directory (I need to
play nice with any other apps that are expecting that version of hibernate). I
also want to use the har service (i.e. the org.jboss.hibernate.jmx.Hibernate
MBean). I am using an ear with isolated class loading. The ear contains a
.deployer which loads up all the third party jars I use, including the newer
hibernate3.jar.
If I use the HibernateMBean, it will instantiate the
org.hibernate.cfg.Configuration using classes from the hibernate3.jar in
server/default/lib, thus causing the session factory and everything else to
come from there.
The only solution I have found is to put a copy of jboss-hibernate.jar into the
.deployer in my ear. The HibernateMBean is then loaded with my ear's class
loader, and the call to
| Configuration cfg = new Configuration();
|
in buildSessionFactory() also uses that class loader and properly pulls the
newer hibernate classes from the hibernate3.jar local to my app.
Is there any other way to do this that I am missing? It seems like
HibernateMBean should either have an optional ConfigurationFactory attribute
which can return a new Configuration object (using the right class loader) or
possibly it should do something like:
| ClassLoader cl = Thread.currentThread().getContextClassLoader();
| Class cfgClass = cl.findClass("org.hibernate.cfg.Configuration");
| Configuration cfg = cfgClass.newInstance();
|
Pardon me if that wouldn't work. My knowledge of ClassLoaders has grown by
about 1000% in the past two days while pounding my head on this, but it is
still very limited.
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