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Re: RFE for connection, DE:Anschluss [message #957 is a reply to message #889] Mon, 02 December 2013 12:18 Go to previous messageGo to previous message
Joachim Rubröder railML is currently offline  Joachim Rubröder railML
Messages: 0
Registered: November 2019
Hi,
the issue was implemented with ticked:
https://trac.assembla.com/railML/ticket/197

Kind regards,
Joachim

-------------------------------------
Joachim Rubröder
Schema Coordinator: railML.timetable


Susanne Wunsch wrote:
>
> coord(at)timetablerailmlorg (Joachim Rubröder) writes:
>> Dirk Bräuer wrote:
>>>> > Can we then clarify that for RailML, there is the following rule:
>>>> > --> No ocpRef is allowed to occur more than one time in the same
>>>> > <trainPart>.
>>
>> A forced splitting of trainParts whenever an ocpTT would occur several
>> times would be consequent. This would also solve the problem of
>> referencing the correct ocpTT within a trainPart
>> ( http://www.railml.org/forum/ro/?group=2&offset=0&thr ead=72&id=247).
>
> I would also prefer this way of modeling instead of references to single
> 'ocptTT's from within a 'trainPart'.
>
>>>> > We could now declare "trainReverse" being obsolete since we could
>>>> > always use "orientationReversed" (also for single MUs by definition)
>>>> > because we always will have to have a new <trainPart>.
>>> I'm afraid I have to add one CON: The current 'trainReverse' attribute
>>> fits to the very common symbol <-> for reversing direction in timetables.

>>> I guess many public information systems have to handle this information.
>>
>> I would like to keep the 'trainReverse' attribute, for this purpose which
>> was also mentioned by T. Kauer (SBB) at the railML meeting. With the
>> forced splitting of trainParts, the 'trainReverse' would mainly occur at
>> the first ocpTT of a trainPart if you have any formations referenced.
>
> It is some kind of redundancy, but it's a bit tricky to deduce it:
>
> 1. Find the commercial train, where this train part is used.
> 2. Look at the train parts at the previous trainPartSequence.
> 3. Look if the same formationTT is referred.
> -> 'trainReverse' is true.
>
> But if the formationTT refers some kind of general formation this
> deduction may be false.
>
> +1 for keeping "trainReverse"
>
> Instead of allowing the 'trainReverse' attribute only in the first
> 'ocpTT' we may include it in the 'formationTT' element as this may only
> occur once per 'trainPart'. This may be ensured by the XSD, but the
> occurence of the attribute in the first 'ocpTT' element may only be
> ensured by Schematron, not XSD.
>
> That would mean, that both attribute 'trainReverse' and
> 'orientationReversed' will be in the same element, but with some kind of
> different meaning. I like to explicitly point to it, instead of "hiding"
> it in different elements:
>
> * 'trainReverse' important for passenger information systems "<->"
>
> * 'orientationReversed" referring to the definition of the formation in
> the rollingstock subschema
>
> There may be a trainPart with 'trainReverse=true' but with
> 'orientationReversed=false' because of an already reversed formation in
> the previous "train part sequence".
>
>> It should therefore no longer be seen as automatically reversing the
>> formation. For a simple timetable information system (without dealing
>> with formations) it could still be used within a long trainPart to
>> indicate the symbol <->.
>
> I would be happy if the railML semantics would be covered by all
> systems. That would mean, that already today a timetabling information
> system has to split train parts if the formation changes, nevertheless
> it does not know the formation type at all.
>
> Kind regards...
> Susanne
>



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