[Koha-bugs] [Bug 17407] New: Fields cataloged using MARC21 880 are only searchable using keyword search

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=17407

            Bug ID: 17407
           Summary: Fields cataloged using MARC21 880 are only searchable
                    using keyword search
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: Searching
          Assignee: gmcharlt at gmail.com
          Reporter: barton at bywatersolutions.com
        QA Contact: testopia at bugs.koha-community.org

According to http://www.loc.gov/marc/bibliographic/bd880.html, the MARC21 880
field is used to store versions of other MARC21 fields that have a different
representation than the main cataloged fields. This would be used, for
instance, to hold title or author information not stored in a Latin character
set.

The 880 field is then linked back to 245 (Title), 100 (author), etc, via 880$6.

The $6 subfield follows the linkage rules here:
http://www.loc.gov/marc/bibliographic/ecbdcntf.html under '$6 - Linkage'.

... the linkage fields are used to give context -- which field / occurrence is
being linked to, which language / is being used, and whether the script is
written right-to-left or left-to-right.

--

Without this development, titles cataloged using 880 fields can be searched
using keyword searches, but searches using the linked title, author, subject
are not searchable using title, author, subject searches.

This will be an issue for both Zebra and Elastic search.

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