TT:trackRef: Difference between revisions
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Only '''up''' and '''down''' are reasonable over here. For an '''unknown''' direction the optional attribute '''dir''' should be skipped. | |||
{{InheritRefAny | {{InheritRefAny |
Revision as of 16:49, 31 May 2012
trackRef
Scheme description / Schemenbeschreibung
Position of trackRef in the XML-Tree / Position von trackRef im XML-Baum
- Parent: <sectionTT>
- Children: Not yet described. / Noch nicht beschrieben.
Multiplicity / Anzahl
Semantics / Bedeutung
The Element <trackRef> is referencing the track elements used by the train and described in detail in an infrastructure branch of the railml file.
Das Element <trackRef> referenziert track Elemente die vom Zug befahren werden und in einem Infrastrukturast der railML Datei näher beschrieben sind.
Attributes of trackRef / Attribute von trackRef
- none: trackRef has no direction restriction.
- up: This denotes the direction from the <trackBegin> to the <trackEnd> (increasing relative position values).
- down: This goes opposite to up (decreasing relative position values).
- both: trackRef is valid in both directions.
- unknown: trackRef is restricted to a certain direction, but this direction is not known.
Only up and down are reasonable over here. For an unknown direction the optional attribute dir should be skipped.
- ref: This refers to the id attribute of the associated <track> element.
- xs:anyAttribute: This provides an extension point for non-railML® attributes in a foreign namespace. How to use it?
Syntactic Constraints / Syntaktische Beschränkungen
- dir: xs:string, generic type for more constrained direction statements: enumeration up, down, unknown; derived from tLaxDirection; optional
- ref xs:IDREF, mandatory
Best practice & Examples / Empfohlene Anwendung & Beispiele
Not yet described. / Noch nicht beschrieben.
Notes / Anmerkungen
See also How to reference infrastructure
Open issues / Offene Punkte/Pendenzen
Not yet described. / Noch nicht beschrieben.