I've implemented a JavaScript script for the StatelessScriptUpdate processor
that does country code to continent code mapping. It will appear in the next
early access of my "Solr 4.x Deep Dive" book (on 8/16.)
One interesting issue: These countries that span continents - Turkey and
Russia and some of the former USSR Republics.
I arbitrarily assigned them a single continent:
// Note: Turkey is mapped to Asia, and Russia to Europe,
// Azerbaijan to Asia, Armenia to Asia, Cyprus to Asia,
// Georgia to Asia, Kazakhstan to Asia,
(I hope I don't get too much hate mail from the Greeks for considering
Cyprus to be part of Asia, but it is closer.)
I suppose continent could be multivalued or maybe a composite string
("eu/as" or "eu+as"), but that has an impact on queries.
But, the scripts also handles multivalued fields (one value at a time), and
nested multivalued fields is not supported.
Thoughts?
-- Jack Krupansky
-----Original Message-----
From: Christian Köhler - ZFMK
Sent: Tuesday, August 06, 2013 5:18 AM
To: solr-user@lucene.apache.org
Subject: Re: Transform data at index time: country -> continent
Am 05.08.2013 15:52, schrieb Jack Krupansky:
You can write a brute force JavaScript script using the StatelessScript
update processor that hard-codes the mapping.
I'll probably do something like this. Unfortunately I have no influence
on the original db itself, so I have fix this in solr.
Cheers
Chris
--
Zoologisches Forschungsmuseum Alexander Koenig
- Leibniz-Institut für Biodiversität der Tiere -
Adenauerallee 160, 53113 Bonn, Germany
www.zfmk.de
Stiftung des öffentlichen Rechts; Direktor: Prof. J. Wolfgang Wägele
Sitz: Bonn
