[Koha-bugs] [Bug 19893] Alternative optimized indexing for Elasticsearch

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=19893

--- Comment #90 from David Gustafsson <glasklas at gmail.com> ---
Yes, some subfields are like that, but in general the information in the
different subfields cannot be automatically concatenated in a meaningful way.
So my point is that is more chance than anything else that 245a and 245b can be
joined. For other fields and subfields it will probably not be the case. I
think that if one wants to do this it would better to invent some special form
of mapping-syntax to be used in mappings.yaml where you could define that for
example 245a and 245b (and other special cases) should be joined together for
example. Something like this:

- facet: ''
  marc_field: '245a+245b'
  marc_type: marc21
  sort: ~
  suggestible: ''

But that would be a little bit challenging to implement with regards to how the
mappings are currently processed.

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