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Thank you for your reply. But I don't think substitution group works for my question. To use substitution group, I must know the name of the element to substitute in advance and specify them in the schema. The problem here is that I don't know what the name of the tag the user want to use. I want to let user freely choose the tag name, no matter it is <data1>, <data2>, or <myappdata>, <data2001> etc. - as long as the content model of the element ( here it is constrained by type in the schema ) is fixed. Of course, the user can include or import the schema and then define the substitution group for some element name, but it is much inconvenient to user. Moreover, I prefer not to expose my schema definition to user, so that the user doesn't need to learn schema so as to use the application. Is it possible? At 11:29 AM 06/01/2001 -0700, Jeff Lowery wrote: >A substitution group will allow you to define a set of elements that are >replacable for another element. The substitutable elements need to be of the >same type, or a derived type, of the element they're being substituted for. > >If you want the type fixed, then you can use a 'final' type as the target(?) >element type, then any substitute elements would have to be of that type, >also. > > > -----Original Message----- > > From: Risheng Lin [mailto:rlin@e...] > > Sent: Thursday, June 01, 2000 9:19 AM > > To: xml-dev@l... > > Subject: Help: XML Schema - any element with fixed type? > > > > > > Hi, > > > > Can any one tell me whether there is a way to design an xml > > schema such > > that it allows a user to define any kind of element but with > > fixed types? > > i.e. the element tag name can be freely chosen by the user as > > long as the > > user's data follows the type defined in xml schema? > > > > For example: > > > > I want the following xml to be validated: > > > > <data1> > > <x /> > > <y /> > > </data1> > > > > > > <data2> > > <x/> > > <y/> > > <data2> > > > > Here <x/> <y/ > are the datatype defined in xml schema and it > > needs to be > > fixed - this can be easily defined in XML schema; but I want > > the data tag ( > > here: data1 and data2 ) to be freely chosen by user and the > > document is > > still valid. How to design such schema? > > > > Note: it is different from <any>, and <anytype>. > > > > Any one can show my how to do it? > > > > Thanks in advance. > > > > Risheng > > > > > > ------------------------------------------------------------------ > > The xml-dev list is sponsored by XML.org, an initiative of OASIS > > <http://www.oasis-open.org> > > > > The list archives are at http://lists.xml.org/archives/xml-dev/ > > > > To unsubscribe from this elist send a message with the single word > > "unsubscribe" in the body to: xml-dev-request@l... > > > >------------------------------------------------------------------ >The xml-dev list is sponsored by XML.org, an initiative of OASIS ><http://www.oasis-open.org> > >The list archives are at http://lists.xml.org/archives/xml-dev/ > >To unsubscribe from this elist send a message with the single word >"unsubscribe" in the body to: xml-dev-request@l... -----------------------------------------------------
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