[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Serialization of XDM - Use cases / Proposal
I'm not unaware of most of the implications of this format, but I still think it's one that's worth thinking on. For purposes of discussion, suppose that you arbitrarily split sequence serialization from single-item serialization into non-XML formats because I believe they are actually qualitatively different problems. Referring only to the sequence serialization side of the problem here, I think the question is whether XML sequence serialization and parsing has to in fact be consumable by an XML parser. As I see it, you either end up specifying some arbitrary set of privileged xml sequence tags: <?xml version="1.0" encoding="UTF-8"?> <xml:sequence xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xml:item value="foo" type="xs:string"/> <xml:item value="5" type="xs:positiveInteger"/> <xml:item type="document"><bar><bat/></bar></xml:item> <xml:item type="comment">foo</xml:item> </xml:sequence> or you work with a direct serialization as described earlier, possibly with RDF encodings for type: (<?xml version="1.0" encoding="UTF-8"?>,"foo",5^positiveInteger,<bar><bat/></bar>,<!-- foo -->) Non-native-xml items, such as binary classes invoked through extensions in XQuery or XSLT, would be a more complex proposition, but otherwise I don't really see where you'd have that much trouble with the notation. It would require a modification of any XDM aware application to handle the latter, but I don't necessarily see that as being that major an issue at this stage. I could see this approach mirroring the approach that RNG utilizes - providing two equivalent representations, one in XML, the other as a compact notation. The serializer in this case would work the way it always does - you would describe the sequence serialization method and possibly content type, and make a distinction between xsx - xml serialization - and xsc - compact notion serialization. Kurt Cagle Managing Editor http://xmlToday.org On Sun, Sep 20, 2009 at 2:29 PM, Michael Kay <mike@saxonica.com> wrote:
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