XML.orgXML.org
FOCUS AREAS |XML-DEV |XML.org DAILY NEWSLINK |REGISTRY |RESOURCES |ABOUT
OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.

 


Help: OASIS Mailing Lists Help | MarkMail Help

[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index]
Re: [xml-dev] RELAX NG require oneOrMore optional elements

* Frank Cusack wrote:
>Is it possible to require one or more from a list of optional elements?
>If I have something like:
>
><element name="parent">
> <oneOrMore>
>  <interleave>
>    <optional>
>     <element name="child1">
>      <text/>
>     </element>
>    </optional>
>    <optional>
>     <element name="child2">
>      <text/>
>     </element>
>    </optional>
>  </interleave>
> </oneOrMore>
></element>
>
>My intent is that <parent> must have at least 1 of the child elements.
>But python-lxml (which I guess is libxml2) doesn't flag
>
><parent />
>
>as erroneous.

You can add a Schematron rule that specifies the additional constraint,
but then you need a RELAX NG + Schematron validator, or you can list the
many alternative, but that would quickly become very verbose.
-- 
Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de
Weinh. Str. 22 · Telefon: +49(0)621/4309674 · http://www.bjoernsworld.de
68309 Mannheim · PGP Pub. KeyID: 0xA4357E78 · http://www.websitedev.de/ 


[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index]


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 1993-2007 XML.org. This site is hosted by OASIS