| Re: tElementWithIDAndName [message #1069 is a reply to message #1068] |
Wed, 12 March 2008 17:05   |
Joachim Rubröder railML
Messages: 0
Registered: November 2019
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coord(at)timetablerailmlorg writes:
> we diskussed in Bern to use "tElementWithIDAndName" in all sub
> schemas for elements to be referenced (elementRefId --> element.id).
> I startet to do so in the timetable, here my experiences: -
> tElementWithIDAndName should be part of GenericRailML.xsd
I agree. I would move the complexType definition to file
"genericRailML.xsd", if Volker agrees.
> - the "name" attribute should be optional because not every element
> needs to have a name. - a "description" attribute is often used in
> the timetable schema instead of the "name" and should be added
> (optional) as well, because it is something slightly different from
> a "name" (e.g. an operating period with id="15", name="Mo-Fr" and
> description="driving Monday to Friday on working days")
I applied the ideas, mentioned by Joachim:
<xsd:complexType name="tElementWithIDAndName">
<xsd:attribute name="id" type="tGenericID" use="required" />
<xsd:attribute name="name" type="tGenericName"
use="optional" />
<xsd:attribute name="description" type="tElementDescription"
use="optional" />
<!-- Provide an extension point for other attributes-->
<xsd:anyAttribute />
</xsd:complexType>
If needed, I can upload a new version of file "genericRailML.xsd" on
developer page.
Other schema coordinators should apply this type in order to get a
step forward to harmonized railML-schemas.
On the other hand, all references should be renamed e.g. following
way:
<xsd:attribute name="trainRefId" type="tGenericID" use="optional">
<xsd:annotation>
<xsd:documentation>
Reference to "id" attribute in "train"
element, "timetable" subschema
</xsd:documentation>
<xsd:documenation>
Other remarks, e.g. for semantical usage
</xsd:documentation>
</xsd:annotation
</xsd:attribute>
I would prefer to define a new simpleType "tGenericRef" in
"genericRailML.xsd", in order to distinct between "id" and "*refId".
Optional or required use has to be decided in special context of
element usage.
Best regards,
Susanne
--
Susanne Wunsch
Schema Coordinator: railML.common
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