[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Questions on DCD
Maneesha Jain asks how to represent the following java class in DCD: class Kid { Person mother; ***** Person father; } speculating that the answer is <ElementDef Type="Kid"> <Element>Person</Element> <Element>Person</Element> </ElementDef> <ElementDef Type="Person"> <Element>Name</Element> <Element>Address</Element> </ElementDef> but then saying 'What I don't understand is where in DCD can I specify that the "Ist Person" information is about the "mother" and "Second Person" information is about "father". In concept, I was looking for a way to specify the "type" and "name" for a <Element> just like in java definition marked as (*****).' The key to the solution is to realize that of the items in the problem, two are object types (Kid and Person) while two are relations between objects (mother and father). Your proposed solution doesn't quite have enought parts, and the relation between the parts is not explicit. You can find a proposal by me for this sort of problem at the W3c (http://www.w3.org/TandS/QL/QL98/pp/microsoft-serializing.html). Here is an example of instance data reflecting a Kid and his mother and father: <Person id="Jane" /> <Person id="Leroy" /> <Kid mother="Jane" father="Leroy" /> I'm not familiar enough with DCD to write the schema in DCD notation, so let me write it in XML-Data notation; I'm sure you can make the translation: <ElementType name="Person" > <AttributeType name="id" dt:type="id" /> <attribute type="id" /> <ElementType> <ElementType name="Kid" > <AttributeType name="mother" dt:type="idref" /> <attribute type="mother" /> <AttributeType name="father" dt:type="idref" /> <attribute type="father" /> <ElementType> I hope this is helpful, Andrew Layman 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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