Re: Objectives of Inheritance
At 10:35 28/07/98 -0600, Arnold, Curt wrote: >> >> I've been building a fairly complex Schema using an XML-Data >> definition converted to a DTD. I've been making extensive use of >> inheritance, and have observed that I'm using inheritance to >> accomplish three objectives. If XSchema provides or could provides >> methods to readily accomplish these objectives, then we might be able >> to sidestep poorly defined or difficult to implement constructs (For >> example, I've avoided attempting to merge the child's content model >> with the parent's content model) [... useful suggestion for inheritance snipped ...] >> >> How readily does XSchema accomplish each of the objectives? >> >> Are there any minor enhancements to XSchema that would make these >> objectives more achievable? I think this is a very important area and one that a lot of us are keen to get into. For example, at present I am implementing (part) of XML-data (or XML-data-like) components in JUMBO. I am then finding that I need to extend these for more specific objects. In my mind there are two separate, but combinable issues: - XML-data primitives. I think it would be extremely useful to implement them (but without the additional relationships). - deriving more specialised components from them (or from anything else). I think that the XSchema team has been taking this in stages - i.e. first get as simple a schema as possible and see if it works. This has to include ways of extending it - possibly in ways like you suggested. Then think of specific ways to extend it that we can all agree are valuable. Of course this is all still experimental but I have good feelings that it's worthwhile. P. Peter Murray-Rust, Director Virtual School of Molecular Sciences, domestic net connection VSMS http://www.nottingham.ac.uk/vsms, Virtual Hyperglossary http://www.venus.co.uk/vhg xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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