[Koha] Mapping MARC21 to Advanced Search

[Barton Chittenden]

Oh, I meant to give a link to the ccl.properties in github as well:
http://git.koha-community.org/gitweb/?p=koha.git;a=blob_plain;f=etc/zebradb/ccl.properties;h=a1ea690c43ef347ebfdd409c51299bdb9cf32777;hb=HEAD

On Tue, Aug 14, 2018 at 9:48 AM, Barton Chittenden <
barton at bywatersolutions.com> wrote:

>
>
> On Mon, Aug 13, 2018 at 9:52 AM, Caroline Cyr-La-Rose <
> caroline.cyr-la-rose at inlibro.com> wrote:
>>
>> In the manual, there is a kind of mapping section for searches that gives
>> you the indexes for each marc field: https://koha-community.org/man
>> ual/18.05/en/html/searching.html#koha-search-indexes
>
>
>  If you want to see where the actual mapping between marc tags and zebra
> index definitions occurs, take a look at the *-koha-indexdefs.xml files.
>
> ./normarc/biblios/biblio-koha-indexdefs.xml
> ./marc21/authorities/authority-koha-indexdefs.xml
> ./marc21/biblios/biblio-koha-indexdefs.xml
> ./unimarc/authorities/authority-koha-indexdefs.xml
> ./unimarc/biblios/biblio-koha-indexdefs.xml
>
> Here's a snippit of biblio-koha-indexdefs.xml for marc21 -- 245$a has the
> zebra indexes Title-cover:w, Title-cover:p, Title-cover:s, Title:w
> and Title:p.
>
> The part after the colon is the index type - w for 'word', p for 'phrase'
> and ... I'm not sure what s is (my guess is 'exact *S*tring').
>
>   <index_subfields tag="245" subfields="a">
>     <target_index>Title-cover:w</target_index>
>     <target_index>Title-cover:p</target_index>
>     <target_index>Title-cover:s</target_index>
>     <target_index>Title:w</target_index>
>     <target_index>Title:p</target_index>
>   </index_subfields>
>   <!--record.abs line 114: melm 245$c      Author,Author-in-order:w,
> Author-in-order:p,Author-in-order:s-->
>   <index_subfields tag="245" subfields="c">
>     <target_index>Author:w</target_index>
>     <target_index>Author-in-order:w</target_index>
>     <target_index>Author-in-order:p</target_index>
>     <target_index>Author-in-order:s</target_index>
>   </index_subfields>
>
> (Here's a link to that file in the koha git repository:
> http://git.koha-community.org/gitweb/?p=koha.git;a=blob;f=
> etc/zebradb/marc_defs/marc21/biblios/biblio-koha-indexdefs.xml;h=
> b3b12a0e2b12239c35a671325407a73e5db364e9;hb=HEAD)
>
> That's only half of the story, because Koha doesn't use the raw zebra
> indexes... it actually uses the ccl.properties file for the indexes that
> you see in the url... for instance, here's the entry in ccl.properties for
> 'author':
>
> Author 1=1003 s=pw
> au Author
>
> The first line has the zebra index definition as well as the bib-1
> attribute (used in z39.50). The second line is creating the alias 'au' for
> Author.
>
> so, when you look at the url for an author search, you'll see something
> like idx=au,phr
>
> ... to trace that back to the indexdefs, you would look up "au" and "phr"
> in ccl.properties, find the zebra index name there, and then back up to
> the indexdefs.xml file.
>
> That's not the whole story, but it's enough for most cases.
>
> --Barton
>