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Subject: RE: [ws-rx] NEW ISSUE: XML Namespace URIs
+1 Christopher Ferris STSM, Emerging e-business Industry Architecture email: chrisfer@us.ibm.com blog: http://webpages.charter.net/chrisfer/blog.html phone: +1 508 377 9295 "David Orchard" <dorchard@bea.com> wrote on 07/14/2005 04:17:16 PM: > Let's say you rev the namespace always, even for minor versions. Then > we also will have to say what is the meaning of various ns changes. > > The only way to guarantee forwards compatibility is to specify that a > 1.X receiver MUST interpret a 1.Y version as a 1.X if Y > X. > > The only way to guarantee backwards compatibility is to specify that a > 1.X receiver MUST interpret a 1.Y version as a 1.X if Y < X. > > For example: We start with example.org/ns/wsrx/1.0. > Then we get to example.org/ns/wsrx/1.1 > > A WS-RX 1.1 receiver has to interpret a ws-rx 1.0 CreateSequence as 1.1. > Then when it responds with a WS-RX 1.1 sequence, the 1.0 receiver has to > interpret that as a 1.0 sequence. > > I'd rather re-use the namespace name to avoid this problem. > > Cheers, > Dave > > > > -----Original Message----- > > From: Rich Salz [mailto:rsalz@datapower.com] > > Sent: Thursday, July 14, 2005 1:06 PM > > To: David Orchard > > Cc: Gilbert Pilz; ws-rx@lists.oasis-open.org > > Subject: RE: [ws-rx] NEW ISSUE: XML Namespace URIs > > > > > I agree with date stamps in namespace uris. Minor versions almost > > > invariably don't guarantee backwards or forwards compatibility (like > xml > > > 1.1 to xml 1.0). > > > > I think the fact that everyone pretty much accepts that the XML change > > should have been numbered 2.0 and not 1.1 is really an argument in > favor > > of well-known major.minor semantics. > > > > As a pragmatic matter, it's a royal pain in the neck to do interop > > debugging > > using date-based URL's. Sitting there on the phone with someone > reading > > dates "041113" vs "040113" is a real pain. Anyone who's worked on > > following > > various drafts of WS-Security and its errata will know -- been there, > > done that, don't wnat to do it again. > > > > /r$ > > > > -- > > Rich Salz Chief Security Architect > > DataPower Technology http://www.datapower.com > > XS40 XML Security Gateway http://www.datapower.com/products/xs40.html >
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