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On Fri, 2007-11-09 at 09:05 +0000, Michael Kay wrote: > > Looking through the SAXON 9 capabilities, I see you have a > > markup language SCM for serializing the XSD Schema Component > > Model. ... > > > > I wonder if there is some scope for coalescing these, > > obviously not to surplant XSD syntax etc but to get a more > > XSL-friendly syntax to help developers? > > > > Does SCM have a solidified schema yet? > > I would be very happy to work with anyone who wants to try and define such a > specification. I actually implemented this initially as a private > serialization format to allow quick reloading of precompiled schemas, and > then realized afterwards that it could be very useful as a format for > applications to access. Clearly the absence of a formal definition of the > format is a big gap that needs to be filled! I'd like to follow up on this. I'll take a look at SCM and see which ballpark it is in. > One problem is that the component model as described in the schema specs is > very denormalized (for example, all facets are explicitly present in a type > derived by restriction). That may be useful for applications accessing the > model but it's not such a good idea in a format designed for quick loading. > So there are design trade-offs. I suggest a good goal might be that it is aimed at simplicity of use by and with XSLT2 systems. This means in particular that chains of references should be overcome. Cheers Rick
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