I am looking to implement multi-select faceting in hibernate search much like exists in Solr (Faceting | Apache Solr Reference Guide 7.0). Is this something that exists or do I need to do the enabling/disabling of filters myself and execute the query multiple times?
You need to do the enabling/disabling of filters yourself and execute the query multiple times.
Related: [HSEARCH-713] Drill-down faceting query should not affect other facet counts - Hibernate JIRA