To support transitions from one search engine to a different one, or
to a different installation of the same kind, this feature allows for
queries to use a different search engine from indexing. So you can
reindex (and do all other search operation) on one server, while
user queries are unaffected on a different server.
This feature supports changing between search engine types, and also
between two Solr installations.
Adds group support to the core search API and the Solr search engine.
This allows for:
* User searching by group (in the API only, no interface yet)
* Automatically restrict search results by group (in some cases like
separate-groups forums)
- Silents the system call when no correct data provided
- Converts long exception messages to standard server
error + debugging message with the exception
Also removing is_server_ready call from execute_query as in production
workflows search is done through \core_search\manager::search and
\core_search\manager::instance already checks is_server_ready. In
testing environment setUp functions should check that the server is
ready before performing other actions.