Noob question... Is there no permanent unique identifier for each game
object irrespective of which collection it is currently a part of?
On Tue, Dec 3, 2013 at 5:32 PM, Gregor Cramer <rema...@gmx.net> wrote:
> From: "Paolo Casaschi"
> -------------------------------------------------------
> It's an interesting feature, worth exploring.
>
> I would consider both links to games in the same DB or
> to games from another DB.
>
> I did some work around the PGN standard, it's probably worth
> considering how to save those games references into the PGN
> export of the game/database and defining a "standard" method
> for coding those references into PGN files. There's a proposed
> extension to the PGN standard that allows for custom tags to
> be defined within game comments, in the format
>
> 1. e4 e6 { [%proprietaryTag value of proprietary tag] } 2. d4 d5
>
> A general syntax for your tag could be
>
> [%gamelink plyNumber, gameNumber, fileName]
>
> with fileName being an optional parameter defaulting to the same
> database and gameNumber and plyNumber are self explanatory.
>
> Your example in PGN could for example be:
>
> 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 (4...Bc5 { [%gameLink 8, 23, ] } )
> 5.exd5 b5
>
> --
> Paolo
> -------------------------------------------------------
>
> Thanks, Paolo, for your suggestions. Defining a generic PGN tag for
> the links is very useful, I will do this.
>
> A bit problematic is the idea to have links into games of other
> databases. The following cases can occur with links:
>
> 1. The referenced game will be deleted physically.
>
> 2. The referenced game will change, so that the referenced position
> is no longer existing.
>
> If the referencee and the referenced game are in the same database,
> it's no problem to handle these cases appropriately, but what should
> I do if the referencee is in another database (and this database is
> currently not accessible)?
>
> 1. Do no allow deleting the referenced game, and do not allow changes
> so that the referenced position will be gone.
>
> 2. Do allow these operations, but in this case the link will become
> invalid.
>
> Both solutions are not nice.
>
> Gregor
>
>
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