"bill.burke(a)jboss.com" wrote : JCA may not know anything about MDBs, but isn't MDB the only *standard* way of using inflow? I thought there was no standard way of registering an activation spec and MEF, etc.... There is nothing to stop somebody writing their own MEF (POJO based) and activating their own endpoint if they can get a link to the ResourceAdapter. 1) There is an example of this in the new jca prototype where the MEF is actually implemented via AOP interceptors. 2) This is one of the purposes of the RAR (MetaData) Repository My preference is to have an abstract MEF implemented by JCA that EJB2, EJB3, POJO can extend to provide the three pieces of metadata that change. isMethodTransactional(Method); getClassLoader(); The hypothetical and non-spec getTransactionTimeout(Method); View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4021149#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...