[NeXus-tech] propose change to NXDL xchema

[Peterson, Peter F.]

I think this is a good idea. I'm a bit surprised it isn't in there already.

P^2

On Jan 7, 2010, at 4:03 PM, Pete R. Jemian wrote:

> 
> I want to add an additional attribute to each NXDL's
> root element (definition) that tells in which category the
> class is defined (base class, application definition,
> or contributed definition).
> 
> This will simplify some steps in the XSLT transformations.
> Right now, there is no way for the XSLT routines to know
> which category of definition applies.
> 
> Here's the revised definition:
> -------------------------% clip here %--------------------------
> 	<xs:complexType name="definitionType">
> 		<xs:group ref="nx:groupGroup" minOccurs="0" maxOccurs="unbounded" />
> 		<xs:attribute name="name" use="required" />
> 		<xs:attribute name="type" use="required" type="nx:definitionTypeAttr" />
> 		<xs:attribute name="extends" use="optional" />
> 		<xs:attribute name="restricts" use="optional" />
> 		<xs:attribute name="svnid" use="optional"/>
> 		<xs:attribute name="category" use="required">
> 			<xs:simpleType>
> 				<xs:restriction base="xs:string">
> 					<xs:enumeration value="base"/>
> 					<xs:enumeration value="application"/>
> 					<xs:enumeration value="contributed"/>
> 				</xs:restriction>
> 			</xs:simpleType>
> 		</xs:attribute>
> 	</xs:complexType>
> -------------------------% clip here %--------------------------
> 
> Is this a problem for anyone?
> 
> Pete
> 
> -- 
> ----------------------------------------------------------
>  Pete R. Jemian, Ph.D.                <jemian at anl.gov>
>  Beam line Controls and Data Acquisition, Group Leader
>  Advanced Photon Source,   Argonne National Laboratory
>  Argonne, IL  60439                   630 - 252 - 3189
> -----------------------------------------------------------
>     Education is the one thing for which people
>        are willing to pay yet not receive.
> -----------------------------------------------------------
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