[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: State Machines; IBM's XMI?
> Does anyone know of efforts to represent state machines (FSA) in XML? From > their DTD, it would seem that IBM's XMI (XML Metadata Interchange) does, but > a quick search of their 2 PDF docs didn't reveal "state machine", just > "state". I was playing around with FSAs in XML a little while ago (actually, all sorts of things: recognizers, generators, transducers; finite-state, recursive). My initial work was using the DTD: <!ELEMENT FSTN (state+)> <!ATTLIST FSTN ID ID #REQUIRED start IDREF #REQUIRED > <!ELEMENT state (arc*)> <!ATTLIST state ID ID #REQUIRED > <!ELEMENT arc (#PCDATA)> <!-- content of arc is label. arc is a jump arc if empty content --> <!ATTLIST arc to IDREF #REQUIRED > I considered using an NMTOKEN attribute for the label of the arc, ie: <!ELEMENT arc EMPTY> <!ATTLIST arc to IDREF #REQUIRED label NMTOKEN #IMPLIED > Another possibility would have been to "declare" labels: <!ELEMENT FSTN (labels,states)> <!ELEMENT labels (label+)> <!ELEMENT states (state+)> <!ELEMENT label (#PCDATA)> <!ATTLIST label ID ID #REQUIRED > <!ATTLIST arc to IDREF #REQUIRED label IDREF #IMPLIED > If people have comments on this, I'm more than willing to put something more formal together. James 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/ and on CD-ROM/ISBN 981-02-3594-1 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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