[hibernate-dev] How best to eliminate the Javassist dependency from Hibernate applications...

Steve Ebersole steve at hibernate.org
Wed Feb 3 08:58:56 EST 2016

Just as a suggestion, we do not need to go to a "full on" clone for your
(1).  A fat-jar, shaded-jar, <your favorite plugin here> should also do the

On Wed, Feb 3, 2016 at 7:54 AM Scott Marlow <smarlow at redhat.com> wrote:

> As modular classloading environments become more popular (e.g. WildFly,
> OSGi, Openjdk Jigsaw), it is more important that applications can
> include their own version of Javassist classes.  This is not possible if
> the application classpath also needs to include the Hibernate (needed)
> version of Javassist.
> My question is how would/should this be accomplished?  Some proposals
> are below:
> 1.  Clone the Javassist runtime classes into Hibernate ORM and maintain
> them as a fork.  I don't think this is practical but still wanted to
> mention it as a possible solution.
> 2.  Stop using the parts of the Javassist api that generate bytecode
> that depends on the Javassist runtime classes.  I have no idea how hard
> this would be.
> I don't think we have a jira for this yet, although we have talked about
> it occasionally for years.
> Any volunteers to help?
> Scott
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