SolrQuery::setFacetSort Determines the ordering of the facet field constraints &reftitle.description; public SolrQuerySolrQuery::setFacetSort intfacetSort stringfield_override Determines the ordering of the facet field constraints &reftitle.parameters; facetSort Use SolrQuery::FACET_SORT_INDEX for sorting by index order or SolrQuery::FACET_SORT_COUNT for sorting by count. field_override The name of the field. &reftitle.returnvalues; Returns the current SolrQuery object, if the return value is used.