Currently, when reporting authority field to the bibliographic records,
the merge function uses the first matching authority field.
However, authorities can provide multiple versions of the same field, with
different languages, identified by a code in the $7 field.
French reference for languages codes for example, but any code system could be
used:
https://documentation.abes.fr/sudoc/formats/unmb/DonneesCodees/CodesZone104.htm#$d
This patch introduces the LanguageToReportOnMerge system preference, which
allows to specify a language code.
When set, if there is an authority field with the given language code, it will
be used to report to the bibliographic record.
If the system preference is not set, or there is no matching field, the default
behavior will apply: the first field will be used.
The $7 in the authority field can be in a short or long form:
- the short form is 2 characters long. Example: ba
- the long form is 8 characters long, with the short form in position 5 and 6
(starting from 1). Example: ba0yba0y
Test plan:
----------
1) Edit the 'Personal Name' authority type framework to make the 100 field
repeatable
2) Add an authority with several languages, like this (the order is important):
100 _7ba0yda0y
_a伊東豊雄
100 _7ba0yba0y
_aItō
3) Add a bibliographic record linked to that authority.
(Click on the "tag editor" icon next to the 100$a field in the bibliographic record to
search for the authority, then Search main heading ($a only): contains Itō)
Note that you can choose which version you want when searching for the
authority, under the "Get it!" column
For this example, choose the latin version: Itō
You should now have this in your bibliographic record:
100 _aItō
_92646
4) Edit the authority, you don't have to change anything, just edit and save.
Note that your bibliographic record now looks like this:
100 _7ba0yda0y
_a伊東豊雄
_92646
The first 100 field of the authority has been reported back to the bibliographic
record, regardless of what you chose when selecting the authority.
5) Apply the patch, set the LanguageToReportOnMerge system preference to: 'ba'
6) Edit the authority again, and check that your bibliographic record now looks
like this, according to the system preference:
100 _7ba0yba0y
_aItō
_92646
7) Edit the authority again, but set the $7 of the latin field to its short
form:
100 _7ba0yda0y
_a伊東豊雄
100 _7ba
_aItō
8) Check that the bibliographic record still has the latin field reported:
100 _7ba
_aItō
_92646
9) prove koha/t/db_dependent/Authority/Merge.t
10) Sign-off :)
Sponsored-by: ENSA
Works smoothly, both with UNIMARC/MARC21
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>
Signed-off-by: Martin Renvoize <martin.renvoize@openfifth.co.uk>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
4dd5b2a891