[Koha-bugs] [Bug 25273] Elasticsearch Authority matching is returning too many results

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=25273

--- Comment #9 from Nick Clemens <nick at bywatersolutions.com> ---
(In reply to Alex Arnaud from comment #8)
> What about custom authority types ?

It should work as before - all we do here is form the field in the index the
same way as we generate the search_form that we will search later

> Wouldn't it be better to had all Match-Heading (those harcoded in
> C4::Heading::Marc21... for marc21 part) in the mappings.yaml ?
I don't see a benefit here, as the search_form is hardcoded when linking. We
should ensure that we generate the data in the index the same way that we will
search for it. 

Authority searching is a different thing than biblio searching - in this case
anyways it is strictly used to match the two records. The user has no control
over the search_form, so allowing control over the index form can only lead to
confusion


> Without this patch applied:
>  - I just added the following mapping for authorities:
>      Match-Heading => 150(abgvxyz)

This may work in this simpler case, however, specifying the fields generates
them in a fixed order, and authorities order can differ and has different
meanings

Also consider:
$aScience$vFiction
$aScience fiction

Which will match each other under the current code if all subfields mapped

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