| Timetable schema [message #674] |
Wed, 19 March 2008 15:50  |
Thomas Strang
Messages: 2
Registered: October 2009
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Junior Member |
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Hi there,
a) is there a specific reason why the "trainID" attribute of the train
element in the timetable schema is of type "tGenericID", i.e.
<xsd:attribute name="trainID" type="tGenericID" use="required" />
instead of type "xs:ID"? The latter one would allow to search for
(train-)elements by their ID in most DOM implementations, e.g.
Element element = doc.getElementById( someTrainId );
b) Where can I publicly find the most recent schema versions? A previous
news entry refers to "The latest version of the timetable scheme is
available on the RailML-Server. ", but I assume this is a non-public
part of the server?
Best,
Thomas
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| Re: Timetable schema [message #675 is a reply to message #674] |
Thu, 20 March 2008 10:31  |
Susanne Wunsch railML
Messages: 0
Registered: January 2020
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Hello,
Thomas Strang wrote:
> a) is there a specific reason why the "trainID" attribute of the train
> element in the timetable schema is of type "tGenericID", i.e.
>
> <xsd:attribute name="trainID" type="tGenericID" use="required" />
>
> instead of type "xs:ID"?
Specification of XML Schema constrains "ID" beginning with a letter or
"_", but especially train "id"s often start with some number [1-9].
see also: <http://www.w3.org/TR/xmlschema-2/#ID>
When restructuring railML schemas for version 1.1, we decided to use
some own base type for "id"s, the "string"-based simple type
"tGenericID". Nevertheless the usage differed between the sub schemas
"timetable", "rollingstock" and "infrastructure". For next version the
schema coordinators are working on harmonization. Attribute "trainID"
should renamed to "id" through inheritance of base type
"tElementWithIDAndName".
see also: thread "tElementWithIDAndName"
<news://153.96.46.40:119/fr8rud$aot$1(at)sifaivifhgde>
Considerations about "tGenericID" and "tElementWithIDAndName" should be
discussed in <news://153.96.46.40:119/railML.misc>
> The latter one would allow to search for
> (train-)elements by their ID in most DOM implementations
Sorry, I can't help with this, since now I didn't come in contact with
DOM. Maybe, other users can give their experiences with DOM and railML.
> b) Where can I publicly find the most recent schema versions? A previous
> news entry refers to "The latest version of the timetable scheme is
> available on the RailML-Server. ", but I assume this is a non-public
> part of the server?
The latest version is railML 1.1
download: <http://www.railml.org/schemas/versions/railML_v1-1.zip>
find from home page: <http://www.railml.org/>
-> choose language (e.g. Deutsch)
-> choose "Entwicklung" or "Development"
-> choose one of topics "Common", "Timetable", "Rollingstock",
"Infrastructure"
There aren't any current working drafts in "genesis" part, which was
referred in previous news entry.
Best regard,
Susanne
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