Can we perform an Elasticsearch text search in Virtuoso instead of an in-built one?
Virtuoso itself does not have Elastic Search support. Virtuoso has built in support for Faceted Search and its own Faceted Browser search service. Virtuoso can be linked to an existing Elastic search installations as shown in this post:
Virtuoso is always accessible via ODBC and JDBC which should be enough for plugging it into Elasticsearch if that’s what you need.