Home » railML newsgroups » railML.infrastructure » Fwd: Mapping of code and abbreviation for ocps
Re: Fwd: Mapping of code and abbreviation for ocps [message #376 is a reply to message #357] Tue, 02 October 2012 19:55 Go to previous messageGo to previous message
Dirk Bräuer is currently offline  Dirk Bräuer
Messages: 311
Registered: August 2008
Senior Member
Dear Christian,

> 'date' defines the publishing date of the register.

I guess 'date' is optional. Before it is too late: Shouldn't we name it
'startDate' and possibly introduce an (optional) 'endDate', too?

This would help to clarify some special cases, e. g. limited validity of
the <designator> in the future ('endDate' is in the future, no successor
is known so far). Otherwise we risk that we will have to define empty
'clearing' designators such as:

<designator register='DB640' entry='Bc' [start]date='2001-01-01'/>
<designator register='DB640' entry='' [start]date='2013-01-01'/>

only to define that the abbreviation/entry 'Bc' is no longer valid for
that OCP after 01.01.2013. (And there is no successor - may be the station
is closed from then, or changes to another IM.) This may be necessary to
clarify that the abbreviation/entry is _free_ from that date!

The better solution would be from my side:
<designator register='DB640' entry='Bc' startDate='2001-01-01'
endDate='2013-01-01'/>

---
We should also clarify (in the Wiki) what is the priority between
<designator>s which have no 'startDate' / 'endDate' and such which have:
- <designator>s without 'startDate' / 'endDate' are valid outside the
validation periods of others
- it is not allowed to define overlapping 'startDate' / 'endDate'
validation periods.

Examples:
<designator register='DB640' entry='Bc1'/>
<designator register='DB640' entry='Bc2' startDate='2001-01-01'/>
'Bc1' was valid until 31.12.2000.

<designator register='DB640' entry='Bc1' endDate='2013-01-01'/>
<designator register='DB640' entry='Bc2'/>
'Bc1' is valid until 01.01.2013, 'Bc2' will be valid from 02.01.2013.

<designator register='DB640' entry='Bc1' startDate='2001-01-01'
endDate='2013-01-01'/>
<designator register='DB640' entry='Bc2'/>
'Bc2' was valid until 31.12.2000 and will be valid from 02.01.2013. (A not
very common case in practice.)

<designator register='DB640' entry='Bc1' endDate='2012-12-31'/>
<designator register='DB640' entry='Bc2' startDate='2012-01-01'/>
Not allowed.

<designator register='DB640' entry='Bc1'/>
<designator register='DB640' entry='Bc2'/>
Not allowed.

Do you copy them into Wiki or should I?

Best regards,
Dirk.

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: ocp's/stations and their properties
Next Topic: Identical signal representation [de:Gruppenausfahrsignal]
Goto Forum:
  

[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Sat Jun 15 07:41:59 CEST 2024