[Koha-bugs] [Bug 29632] New: Callnumber sorting is incorrect in Elasticsearch

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=29632

            Bug ID: 29632
           Summary: Callnumber sorting is incorrect in Elasticsearch
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5 - low
         Component: Searching - Elasticsearch
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: nick at bywatersolutions.com

It looks like we are not sorting cn_sort as a raw field, but sorting the
analyzed version.

To recreate:
0 - Be using ES with Koha
1 - On records with single item, add callnumbers:
    VA65 E7 R63 1984
    VA65 E7 T35 1990
    VA65 E45 R67 1985
2 - Add public note 'shrimp' or something to make them easily searchable as a
group
3 - Search for 'shrimp'
4 - Note E45 comes last, it should come first

Problem may be here:
1122 sub _sort_field {
1123     my ($self, $f) = @_;
1124 
1125     my $mappings = $self->get_elasticsearch_mappings();
1126     my $textField = defined $mappings->{data}{properties}{$f}{type} &&
$mappings->{data}{properties}{$f}{type} eq      'text';
1127     if (!defined $self->sort_fields()->{$f} || $self->sort_fields()->{$f})
{
1128         $f .= '__sort';
1129     } else {
1130         # We need to add '.raw' to text fields without a sort field,
1131         # otherwise it'll sort based on the tokenised form.
1132         $f .= '.raw' if $textField;
1133     }
1134     return $f;
1135 }

We need to enforce raw for cn-sort, or we need to index it unanalyzed

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