IS:signalRef signalGroup

signalRef
 

Schema description / Schemenbeschreibung

Position of signalRef in the XML-Tree / Position von signalRef im XML-Baum

• Parent: <signalGroup>
• Children: None

Multiplicity / Anzahl

[0..∞]

Semantics / Bedeutung

The element <signalGroup> allows for grouping of signals which are referenced using <signalRef>.

Attributes of signalRef / Attribute von signalRef

• sequence: This allows for sorting the referenced signals.

• ref: This refers to the id attribute of the associated signal element.

• xs:anyAttribute: This provides an extension point for non-railML^® attributes in a foreign namespace. How to use it?

Syntactic Constraints / Syntaktische Beschränkungen

• sequence xs:positiveInteger, optional
  If no sequence is provided, the sequence of the referenced signals shall be assumed as "arbitrary" or "undefined". In no case the sequence of the XML elements in the XML file shall matter.
  Either all or none of the <signalRef> elements in the current <signalGroup> element shall carry sequence attributes.
  The referenced signal with the lowest sequence value is interpreted as the first element of the current <signalGroup>.
  Each sequence value shall only be used once within the current <signalGroup>.

• ref xs:IDREF, mandatory

Best practice & Examples / Empfohlene Anwendung & Beispiele

Not yet described. / Noch nicht beschrieben.

Notes / Anmerkungen

Not yet described. / Noch nicht beschrieben.

Open issues / Offene Punkte/Pendenzen

Not yet described. / Noch nicht beschrieben.