Actually, I think we should consider MDR as a proper place for qualifiers. At least that's what Adrian and me are discussing wrt LDAP filtering and service properties in OSGi. - http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4265098#... Where our qualifiers are nothing more then properties, it's just that they are not all strings. This way we would have a single mechanism for lookup, regardless of what and where qualifiers/properties are/came, or what the filtering mechanism is. e.g. Weld/jsr330 would have different filtering of MDR data than OSGi LDAP. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4266131#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...