ClassCastException org.codehaus.stax2.XMLInputFactory2 when packaging stax in JBoss EAP 6

Issue

• We are trying to migrate a war from an old version of Weblogic to Jboss but have run into some sort of class cast exception having to do with XML parsing. In particular, the code in question utilizes the Codehaus Stax2 parsing libraries. There is a chunk of code:

private static XMLInputFactory2 getInputFactory() {
        if (my.inputFactory == null) {
            my.inputFactory = (XMLInputFactory2) XMLInputFactory2.newInstance();
        }
        return my.inputFactory;
    }

And XMLInputFactory2.newInstance() is returning a class of type "__redirected.__XMLInputFactory" but our code tries to cast to a (org.codehaus.stax2.XMLInputFactory2).