There is a language auto-detect UpdateRequestProcessor to route indexed content to differently suffixed fields. You have Google's algorithm: http://www.solr-start.com/info/update-request-processors/#LangDetectLanguageIdentifierUpdateProcessorFactory or a Tika one: http://www.solr-start.com/info/update-request-processors/#TikaLanguageIdentifierUpdateProcessorFactory
To map during retrieval, you could use aliases, like I did in my book example some years ago: https://github.com/arafalov/solr-indexing-book/blob/master/published/languages/conf/solrconfig.xml#L20 Does this cover your needs? Regards, Alex. ---- Newsletter and resources for Solr beginners and intermediates: http://www.solr-start.com/ On 6 June 2016 at 06:57, Riedl, Johannes <johannes.ri...@uni-tuebingen.de> wrote: > Hi all, > > we are currently in search of a solution for switching between different > languages in the query results and keeping the possibility to perform a > search in several languages in parallel. The overall aim would be a constant > field name and a an additional Solr parameter "lang=XX_YY" that allows to > return the results in the chosen language while searches are applied to all > languages. Setting up several cores to obtain a generic field name is not an > option. Does anyone know of a clean way to achieve this, particularly routing > content indexed to a generic field (e.g. title) to a "background field" (e.g. > title_en, title_fr) etc on the fly and retrieving it from there depending on > the language chosen. > > Background: So far, we have investigated the multi-language field approach > offered by Trey Grainger in the code examples for "Solr in Action" > (https://github.com/treygrainger/solr-in-action.git, chapter 14), an > extension to the ordinary textField that allows to use a generic field name > and the language is encoded at the beginning of the field content and > appropriate index and query analyzers associated to dummy fields in > schema.xml. If there is a way to store data in these dummy fields and > additionally the lang parameter is added we might be done. > > Thanks a lot, best regards > > Johannes
