[Koha-bugs] [Bug 13937] Add an Elasticsearch-compatible Z39.50/SRU daemon that can inject item status MARC subfields

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13937

--- Comment #188 from David Cook <dcook at prosentient.com.au> ---
(In reply to Ere Maijala from comment #184)
> That's because the escaped characters have a special meaning at least in
> Elasticsearch, and unless we escape these characters in ES query builder,
> they need to be accounted for here. Otherwise ES would balk e.g. trying to
> parse [something] as a range.
> 

Ahhhh that's good to know. I thought it was passing the data straight to Zebra,
so I was confused why we'd be mangling the data. What you say makes more sense.

> I'd be happy to provide some documentation on a wiki page, if that'd be
> useful. In the long run this may be used by quite many since it provides
> Z39.50 and SRU on top of Elasticsearch, which would otherwise require
> running Zebra.

Yes please :). 

I didn't see any references to Elasticsearch in the patches I viewed. I thought
it required Zebra to be used. I must've missed the "Add support for SRU and
Elasticsearch" patch now that I look again... hehe. It would be great to use
this instead of Zebra in that context! I was groaning at the idea of storing
MARCXML in MySQL and indexing it into *both* Elasticsearch and Zebra just to
get Z39.50 functionality...

Nice one, Ere!

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