[Koha-bugs] [Bug 30280] Support authority records with common subject headings from different thesaurus

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=30280

--- Comment #56 from Frank Hansen <frank.hansen at ub.lu.se> ---
(In reply to Katrin Fischer from comment #55)
> hi Frank, could you maybe have a look at the new bugs in Blocks? bug 31924
> and bug 31925.

Hi Katrin,

Well 31924 is probably a Zebra related issue. I got the impression that linking
of subject headings based on thesaurus already works with Zebra. It is at least
that's what I thought when I read this in the authority-koha-indexdefs.xml
file:

  <kohaidx:index_subject_thesaurus tag="008" offset="11" length="1"
detail_tag="040" detail_subfields="f">
    <kohaidx:target_index>Subject-heading-thesaurus:w</kohaidx:target_index>
  </kohaidx:index_subject_thesaurus>

Here is already a reference to 040$f which is a crucial part when it comes to
other thesaurus.

But I see that the linking does not work at all in Zebra.

Here at Lund University, we are only using ElasticSearch. In fact, we Zebra is
not running at all. So it is difficult for me to test Zebra in real life.

I'n not an expert on Zebra. Probably the new
subject-heading-thesaurus-conventions index needs to be set up in Zebra as
well. I'm not 100% certain how to do that. 

As for 31925, that's the next step. We don't use AutoLinkBiblios because it
doesn't work. We import the subject headings from different thesaurus from
Royal Library (Libris). So for avoid 30280 to being too complex, I have focused
on getting the thesaurus based subject heading linking to work. Since
AutoLinkBiblios only creates LCSH subject headings we cannot use this. But it
would be awesome to get it to work later on.

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