Altova Mailing List Archives>Archive Index >xmlschema-dev Archive Home >Recent entries >Thread Prev - RE: Occurrence constraints [Thread Next] Re: Occurrence constraintsTo: "Xan Gregg" <Xan.Gregg@---.---> Date: 6/4/2004 11:15:00 AM
The Component Constraint you quote is just that, a constraint on
_components_ in _schemas_, and applies to the {max occurs} and {min
occurs} properties.
The XML Representation used in schema _documents_ allows the
_attributes_ maxOccurs and minOccurs to have value 0, but, as noted in
your other quote, this results in no component.
So e.g.
<xs:sequence>
<xs:element name="foo" type="baz" minOccurs="0" maxOccurs="0"/>
<xs:element name="bar" type="xs:string"/>
</xs:sequence>
may occur legally in a schema document, but the corresponding sequence
Particle component will contain only one Element Declaration
component.
Sorry for the confusion.
ht
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
Half-time member of W3C Team
2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: ht@i...
URL: http://www.ltg.ed.ac.uk/~ht/
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From ht@i... Fri Jun 4 05:15:26 2004
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