[Koha-bugs] [Bug 9755] Record merge code needs to be refactored

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=9755

--- Comment #15 from Chris Cormack <chris at bigballofwax.co.nz> ---
(In reply to comment #14)
> OK, I thought it was in 090a, like in UNIMARC.
> So, if it useful NOT to merge 999 for Marc21, maybe it will be usefull NOT t
> to merge 090 too, for UNIMARC?
> 
> But 999 could also be used for other purpose I suppose, in Marc21 and in
> UNIMARC.
> For example, in UNIMARC, Academic libraries can use this subfield freely,
> for their own use.
> "Cette zone peut être utilisée librement pour des données ne correspondant à
> aucune zone du format d'échange standard, suivant les besoins de chaque
> bibliothèque."
> http://documentation.abes.fr/sudoc/formats/loc/zones/999.
> htm#UtilisationActuelle
> 
> M. Saby

It could but that would be dangerous of them, because 999 is used for Koha
specific data, and merging them makes no sense, you cant have a record that has
2 biblionumbers that would break things badly.
Maybe you could send a follow up patch that doesn't exclude 999 if the flavour
is UNIMARC.
This is still a major improvement though, and makes it much less likely for the
merge to create an invalid record.

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