[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Query regarding attribute grouping in XML Schema
hi, I need to specify this constraint in W3C XML Schema. I tried grouping both attributes in an attribute group and then specifying that the attribute group is optional. But using the "use" attribute on attribute group is not permitted like the following: <xsd:attributeGroup name="address"/> <xsd:attribute name="doorno" type = "xsd:string"/> <xsd:attribute name="streetname" type="xsd:string"/> </xsd:attributeGroup> While referencing the address attribute group, <xsd:attributeGroup ref="address" use="optional"/> I'm not able to describe this constraint using an annotation in a way in which it would be validated by a parser. Could you please give an example for the same? I would also like to know if it will be treated as documentation or would it be validated against by the parser? regards, Sabina --- James Clark <jjc@j...> wrote: > > > > <element name="ADDRESS"> > > > <optional> > > > <attribute name="doorno"/> > > > <attribute name="streetname"/> > > > </optional> > > > </element> > > > > I have no experience in RELAX-NG but this look > like a good and simple way > of > > specifying the above constaint. But if this is how > you specify that an > > element should either have no attributes or both > then how would you > specify > > that element ADDRESS can optionally have > attributes doorno and streetname > but > > without the connection between the attributes? > > Would that be something like: > > > > <element name="ADDRESS"> > > <optional> > > <attribute name="doorno"/> > > </optional> > > <optional> > > <attribute name="streetname"/> > > </optional> > > </element> > > > > or? > > It would be exactly that. > > James > > > > ----------------------------------------------------------------- > The xml-dev list is sponsored by XML.org > <http://www.xml.org>, an > initiative of OASIS <http://www.oasis-open.org> > > The list archives are at > http://lists.xml.org/archives/xml-dev/ > > To subscribe or unsubscribe from this elist use the > subscription > manager: <http://lists.xml.org/ob/adm.pl> __________________________________________________ Do You Yahoo!? Listen to your Yahoo! Mail messages from any phone. http://phone.yahoo.com
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