[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Schema validation question
I agree- but it isn't my project, and I don't set their standards. I would much prefer to see them use RELAX. This solution, if it works, would at least avoid the hopeless mangling of their instance documents. Ah, Joe, if only you and I ran the world :>). Take care and thanks for your help. Linda -----Original Message----- From: Chiusano Joseph <chiusano_joseph@b...> Sent: May 5, 2004 9:23 AM To: Linda Grimaldi <grimlinda@e...> Cc: xml-dev@l... Subject: Re: Schema validation question Linda Grimaldi wrote: > > Thank you all for your replies, particularly the one about advising me to get some sleep! But I have a 15 year old daughter, so, XML or no XML, sleep does not come easily... > > Anyhow, I will tell my friend to try defining the groups instead of elements under the choice tag. IMHO, that would be an unwise choice - but to each their own. Kind Regards, Joe Chiusano Booz | Allen | Hamilton Strategy and Technology Consultants to the World > I looked at that, but the cheap reference I was using seemed to imply > that you could only "choice" elements. That's what I get for not > going back to the standard, but somehow, I just couldn't make myself > do it. > > Linda > > -----Original Message----- > From: Chiusano Joseph <chiusano_joseph@b...> > Sent: May 5, 2004 7:23 AM > To: Bob Foster <bob@o...> > Cc: Linda Grimaldi <grimlinda@e...>, xml-dev@l... > Subject: Re: Schema validation question > > Bob Foster wrote: > > > > This would be trivial to do in RELAX NG, but why do it? If the value of > > one element is fixed by the name of another, then the value is redundant > > and may be omitted. > > How would you then pass that value on to the next system/process if it > is omitted? The subsequent processing might depend on that value being > there - and you may not be able to (for whatever reason) enhance the > subsequent system/process to "inherently" recognize that value. > > Kind Regards, > Joe Chiusano > Booz | Allen | Hamilton > Strategy and Technology Consultants to the World > > > Such a thing is only useful for producing error > > messages. > > > > Bob Foster > > > > Linda Grimaldi wrote: > > > I have been out of the XML world for a little while now, but someone just asked me a question and I have to admit, it's going to keep me up tonight if I can't come up with a better solution. And I'm a little rusty, to boot... > > > > > > The issue is one of data dependency and validation. The goal is to enforce a restriction on pairs of data values- if the data associated with the node <Fruit><Name> is "Apple", then the value of the sibling node <Fruit><Abbrev> must be "APL". Effectively, the goal is to enforce a specific mapping from one enum into another within an XML document. The only way my associate could figure to capture this dependency is as follows: > > > > > > <xs:complexType name="Fruit"> > > > <xs:annotation> > > > <xs:documentation>Defines the valid values for fruit types</xs:documentation> > > > </xs:annotation> > > > <xs:choice> > > > <xs:element name="APL" type="xs:token" fixed="Apple"/> > > > <xs:element name="ORG" type="xs:token" fixed="Orange"/> > > > <xs:element name="BAN" type="xs:token" fixed="Banana"/> > > > <xs:element name="LEM" type="xs:token" fixed="Lemon"/> > > > <xs:element name="GRP" type="xs:token" fixed="Grape"/> > > > </xs:choice> > > > </xs:complexType> > > > > > > All in all, this strikes me as a very ugly, even offensive, solution. My initial response was to forget about the validation- it wasn't worth it. Is there a way to preserve the data dependency validation without warping the instance document as the above schema fragment would require? > > > > > > Thanks, > > > Linda > > > > ----------------------------------------------------------------- > > 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 list use the subscription > > manager: <http://www.oasis-open.org/mlmanage/index.php> > > -- > Kind Regards, > Joseph Chiusano > Associate > Booz | Allen | Hamilton > > ----------------------------------------------------------------- > 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 list use the subscription > manager: <http://www.oasis-open.org/mlmanage/index.php> -- Kind Regards, Joseph Chiusano Associate Booz | Allen | Hamilton
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