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RE: XML-Schema Help

• To: "'Ranjeet Sonone'" <ranjeet@i...>,"'Dave Yancey'" <dyancey1@h...>
• Subject: RE: XML-Schema Help
• From: "Priscilla Walmsley" <priscilla@w...>
• Date: Fri, 16 Aug 2002 16:37:47 -0400
• Cc: <xml-dev@l...>
• Importance: Normal
• In-reply-to: <EFBAE6044AC0CD41981E01582A1E94AB302355@a...>

That's non-deterministic too.  It's the equivalent of


> <xsd:complexType name="timeframeType">
>    <xsd:choice>
>       <xsd:sequence>
>         <xsd:element ref="earliestdate"/>
>         <xsd:element ref="latestdate"/>
>       </xsd:sequence>
>       <xsd:choice>
>         <xsd:element ref="earliestdate"/>
>         <xsd:element ref="latestdate"/>
>       </xsd:choice>
>    </xsd:choice>
> </xs:complexType>

If the parser encounters earliestdate it does not know which branch of
the content model to use.

Priscilla
-----------------------------------------------------
Priscilla Walmsley             priscilla@w...
Author, Definitive XML Schema     (Prentice Hall PTR)
----------------------------------------------------- 

> -----Original Message-----
> From: Ranjeet Sonone [mailto:ranjeet@i...] 
> Sent: Friday, August 16, 2002 4:35 PM
> To: Priscilla Walmsley; Dave Yancey
> Cc: xml-dev@l...
> Subject: RE:  XML-Schema Help
> 
> 
> consider this:
> 
> <xsd:complexType name="timeframeType">
> 	<xsd:choice>
> 		<xsd:group   ref="both"/>
> 		<xsd:group   ref="oneorother"/>
> 	</xsd:choice>
> </xs:complexType>
> 
> <xsd:group name="both">
>   <xsd:sequence>
>     <xsd:element ref="earliestdate"/>
>     <xsd:element ref="latestdate"/>
>   </xsd:sequence>
> </xsd:group>
> 
> <xsd:group name="oneorother">
>   <xsd:choice>
>     <xsd:element ref="earliestdate"/>
>     <xsd:element ref="latestdate"/>
>   </xsd:choice>
> </xsd:group>
> 
> 
> -----Original Message-----
> From: Priscilla Walmsley [mailto:priscilla@w...]
> Sent: Friday, August 16, 2002 1:18 PM
> To: 'Dave Yancey'
> Cc: xml-dev@l...
> Subject: RE:  XML-Schema Help
> 
> 
> Sorry David,
> 
> This is still non-deterministic because when the parser encounters a
> description element, it does not know which branch of the 
> content model
> to take.  I think what you want is:
> 
> 
> > <xs:complexType name="timeframeType">
>     <xs:sequence>
> 	<xs:element ref="description" minOccurs="0"/>
> > 	<xs:choice>
> > 		<xs:sequence>
> > 			<xs:element ref="earliestdate"/>
> > 			<xs:element ref="latestdate" minOccurs="0"/>
> > 		</xs:sequence>
> > 		<xs:element ref="latestdate"/>
> > 	</xs:choice>
>     </xs:sequence>
> > </xs:complexType>
> 
> 
> Hope that helps,
> Priscilla
> -----------------------------------------------------
> Priscilla Walmsley             priscilla@w...
> Author, Definitive XML Schema     (Prentice Hall PTR)
> ----------------------------------------------------- 
> 
> > -----Original Message-----
> > From: Dave Yancey [mailto:dyancey1@h...] 
> > Sent: Friday, August 16, 2002 4:11 PM
> > To: jeni@j...; JCHIUSANO@l...
> > Cc: bryce@s...; xml-dev@l...
> > Subject: Re:  XML-Schema Help
> > 
> > 
> > Thanks to all who helped.
> > 
> > I apologize for not being clear on what I was looking for. I 
> > wasn't positive 
> > it could be done for I am new to Schemas.  But thanks to 
> > everyones help 
> > below is what I have and is doing exactly what I needed.
> > 
> > 
> > 
> > <xs:complexType name="timeframeType">
> > 	<xs:choice>
> > 		<xs:sequence>
> > 			<xs:element ref="description" minOccurs="0"/>
> > 			<xs:element ref="earliestdate"/>
> > 			<xs:element ref="latestdate" minOccurs="0"/>
> > 		</xs:sequence>
> > 		<xs:sequence>
> > 			<xs:element ref="description" minOccurs="0"/>
> > 			<xs:element ref="earliestdate" minOccurs="0"/>
> > 			<xs:element ref="latestdate"/>
> > 		</xs:sequence>
> > 	</xs:choice>
> > </xs:complexType>
> > 
> > 
> > ----
> > David Yancey
> > 
> > 
> > 
> > _________________________________________________________________
> > Send and receive Hotmail on your mobile device: 
http://mobile.msn.com
> 
> 
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    • From: "Ranjeet Sonone" <ranjeet@i...>

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