[Koha-bugs] [Bug 32060] New: Improve performance of Koha::Item->columns_to_str

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=32060

            Bug ID: 32060
           Summary: Improve performance of Koha::Item->columns_to_str
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: Architecture, internals, and plumbing
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: glasklas at gmail.com
        QA Contact: testopia at bugs.koha-community.org

When creating a new item for a biblio with many items, for example serials
which can have several hundreds, the table of existing items that is shown is
currently very performance heavy to generate. The main culprit is
Koha::Item->columns_to_str that can be sped up substantially by caching data
that is looked up repeatedly for each call. With this patch columns_to_str will
run about ~70x faster, reducing the load time of
/cataloguing/additem.pl?biblionumber=... to about one fifth for a biblio with
about 150 items (and even more with increasing number of items).

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