Sarnia allows a Drupal site to interact with and display data from Solr cores with arbitrary schemas, mainly by building views. This is useful for Solr cores that index large, external (ie, non-Drupal) datasets that either aren't practical to store in Drupal or that are already indexed in Solr.
Sarnia treats records from Solr as Drupal entities, although listing, filtering, and displaying Sarnia entities should be done using Views. Solr properties can be formatted within Views fields using field formatters (hook_field_formatter_info(), hook_field_formatter_view()).
- The current dev version (as of May 2015) has been patched and tested to work with the latest Search API and Search API Solr. The included documentation has yet to be upgraded.
- Random sorts in Views can be added with
- There is now working FacetAPI integration (requires search_api_facetapi, which is included in the Search API project)
The Sarnia project contains example drush makefile code that applies the first patch from above.