SolrQuery::setExpandQuery

参考

• SolrQuery::setExpand() - Enables/Disables the Expand Component
• SolrQuery::addExpandSortField() - Orders the documents within the expanded groups (expand.sort parameter).
• SolrQuery::removeExpandSortField() - Removes an expand sort field from the expand.sort parameter.
• SolrQuery::setExpandRows() - Sets the number of rows to display in each group (expand.rows). Server Default 5
• SolrQuery::addExpandFilterQuery() - Overrides main filter query, determines which documents to include in the main group.
• SolrQuery::removeExpandFilterQuery() - Removes an expand filter query