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RE: Basic XSD question

• To: "'Robert Soesemann'" <rsoesemann@s...>, xml-dev@l...
• Subject: RE: Basic XSD question
• From: "Ian D. Hunter" <ianh@t...>
• Date: Fri, 10 Dec 2004 12:08:50 -0500
• In-reply-to: <D8592BFB6BB4CA43B70558B8ECB6C185697CF9@m...>
• Organization: TIBCO Software, Inc.
• Reply-to: ianh@t...
• Thread-index: AcTe1RrmDO8xNq4zTjevW8/krTyJ9wAAZZ8gAABKcwAAACT1gAAAissg

Xs:all does not care about ordering.
Can use optional or required - but not repeating:

<?xml version = "1.0" encoding = "UTF-8"?>
<!--Generated by Turbo XML 2.4.2.7. Conforms to w3c
http://www.w3.org/2001/XMLSchema-->
<xsd:schema xmlns:xsd = "http://www.w3.org/2001/XMLSchema"
	 elementFormDefault = "qualified">
	<xsd:element name = "root">
		<xsd:complexType>
			<xsd:all>
				<xsd:element name = "a" type = "xsd:integer"
minOccurs = "0"/>
				<xsd:element name = "b" type =
"xsd:dateTime"/>
				<xsd:element name = "c" type =
"xsd:decimal"/>
			</xsd:all>
		</xsd:complexType>
	</xsd:element>
</xsd:schema>

-----Original Message-----
From: Robert Soesemann [mailto:rsoesemann@s...] 
Sent: Friday, December 10, 2004 11:51 AM
To: xml-dev@l...
Subject: FW:  Basic XSD question

Thanks for your reply. How would the xsd to look like if I want to have
to have a document
- that contains elements in no specific order
- where some elements must be present and always have values of a
specific type

Neighter all, sequence nor choice seems to be correct.

R.

-----Original Message-----
From: Chiusano Joseph [mailto:chiusano_joseph@b...] 
Sent: Freitag, 10. Dezember 2004 17:44
To: Robert Soesemann; xml-dev@l...
Subject: RE:  Basic XSD question


> -----Original Message-----
> From: Robert Soesemann [mailto:rsoesemann@s...]
> Sent: Friday, December 10, 2004 11:27 AM
> To: xml-dev@l...
> Subject:  Basic XSD question
> 
> Hello,
> 
> I have a quite basic question, but I could find a solution.
> 
> How can I define in XMLSchema that an element should provide a text 
> value?

Use the "minLength" facet, with minLength equal to 1.
 
> When I validate the following XML with the XSD
> I get no error, because the empty string seems to be a valid
> string as well.

Yes, because the default for minLength is 0. The behavior you see is
therefore the expected behavior.

> XML:
> ----
> <root>
> 	<a></a> <-- if a is <a> is included it should have an xs:string
text 
> node
> 	<a></a> <-- a second <a> is also not allowed </root>
> 
> XSD fragment:
> -------------
> 	<xs:element name="root">
> 		<xs:complexType>
> 			<xs:choice maxOccur="1"> <-- why does
> it not invalidate the second <a>?

Because you've placed the maxOccurs facet on the choice, not on the
individual element - if you intend to restrict element <foo> to one
occurrence max, the maxOccurs facet has to be an attribute of the
<xs:element> element. You may also not want to use a choice there, since
there is only one possible value.

Hope that helps--

Kind Regards,
Joseph Chiusano
Booz Allen Hamilton
Strategy and Technology Consultants to the World
 
> 				<xs:element name="foo" type="xs:string"
> minOccurs="1" />
> 			</xs:choice>
> 		</xs:complexType>
> 	</xs:element>
> 
> Thanks for replies,
> 
> R.
> 
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    • From: "Robert Soesemann" <rsoesemann@s...>

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