7039 2009-06-22 12:32:25 +0000 Eventing: wse:Identifier is asking for trouble 2009-08-18 21:18:35 +0000 1 1 1 Unclassified WS-Resource Access Eventing FPWD PC Windows XP CLOSED REMIND hasProposal P2 normal --- 1 dug dug lli5 public-ws-resource-access-notifications oldest_to_newest 25632 0 dug 2009-06-22 12:32:25 +0000 WS-Eventing defines wse:Identifier as a ref-param that can be used. However, we've already seen hints that some people's implementations, in the past, were built with the assumption that this ref-param would be there. This is incorrect. We should reduce unnecessary interop problems like this. Proposal 1: -------------------------------------------------------------- Remove the wse:Identifier element - people can define any kind of ref-param they need. Proposal 2: -------------------------------------------------------------- Add clarifying text, after each use. For example, section 4.1 says: Note, subscribers wishing to correlate SubscriptionEnd messages with the subscription to which they apply MAY wish to add a distinguishing reference parameter to the EndTo EPR. For convenience in this common situation, this specification defines a global element, wse:Identifier of type xs:anyURI, that MAY be used as a distinguishing reference parameter. Add: Implementations of Event Sources, or Subscription Managers, MUST NOT assume that this reference parameter will be used. And do something similar for the SubscriptionMgr epr defn. -------------------------------------------------------------- I prefer proposal 1 as it doesn't lead some less experienced developers down the wrong path. 25677 1 lli5 2009-06-23 17:12:08 +0000 quick questions. 1) if we take proposal 1, how would a subscription manager distinguish different subscriptions it has? 2) in proposal 2, is the added statement consistent with the WS-Addressing guideline that the reference parameters are supposed to be opaque? In this case, the subscription manager minted an EPR (that contains wse:Identifier) and the event subscriber is supposed to always copy the reference parameters back when getstatus/renew/unsubscribe. Thanks. 25910 2 bob 2009-07-08 06:11:45 +0000 2009-07-07 resolved by comment 1 proposal 1 "Remove the wse:Identifier element"