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Re: [xml-dev] <all> and minOccurs="0" Problem
- From: Radek Wisniewski <email@example.com>
- To: firstname.lastname@example.org
- Date: Fri, 14 Sep 2001 13:27:54 +0200 (CEST)
On 14 Sep 2001, Henry S. Thompson wrote:
> Eddie <email@example.com> writes:
> > > > -----Original Message-----
> > > > From: Radek Wisniewski [mailto:firstname.lastname@example.org]
> > > > Sent: Thursday, September 13, 2001 10:00 AM
> > > > To: Martin Gudgin
> > > > Cc: Radek Wisniewski; email@example.com
> > > > Subject: Re: [xml-dev] <all> and minOccurs="0" Problem
> > > >
> > > >
> > > > Yes, it works fine. But the question remains unanswered: What is the sence
> > > > of <all minOccurs="0"> attribute?
> > > > What interesting, I can't deklare such en value in any way because:
> > > > 1) under <complexType>, element <all> must have both attributes minOccurs
> > > > and maxOccurs set to 1
> > No, the entire <xs:all> group can be optional as well, i.e allowed values for
> > minOccurs on the xs:all element itself is 0 or 1.
> Eddie is correct -- the XML Schema WG has agreed a correction here, as
> two different parts of the REC contradict each other on this point,
> but the resolution will be that 0 or 1 is allowed.
OK, is allowed in <all> definition, but if i declare:
Xerces claims: Error: cos-all-limited.1.2: The minOccurs attribute of a
mod el group with "all" compositor that is part of a pair that is the
content type of a complex type definition must have the value one.
The value "0" is incorrect.
And has right, look at http://www.w3.org/TR/xmlschema-1/#cos-all-limited
So probably we should use maxOccurs="0" in <group>? Lets try:
Xerces say: Error: The child 'xs:all' of the named group definition
'personGroup' must not specify either the minOccurs or maxOccurs attribute.
So where can I specyfy <all> with minOccurs="0" in not under <comlexType>
or <group> ?
XML Syp for example doesn't see any of abowe problems so please dosn't use
this tool for this matter.
> Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
> W3C Fellow 1999--2001, part-time member of W3C Team
> 2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
> Fax: (44) 131 650-4587, e-mail: firstname.lastname@example.org
> URL: http://www.ltg.ed.ac.uk/~ht/