[LUCENE-5474] Add example for retrieving facet counts without retrieving documents

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.7
• Fix Version/s: 4.8, 6.0
• Component/s: modules/facet
• Lucene Fields: New, Patch Available
• Assignee: Shai Erera
• Reporter: Rob Audenaerde
• Created: 26/Feb/14 15:35
• Updated: 28/Aug/22 14:01
• Resolved: 02/Mar/14 11:46

Description

In the examples of facetting the FacetsCollector.search() is used. There are use cases where you do not need the documents that match the search.
It would be nice if there is an example showing this.

Basically, it comes down to using searcher.search(query, null /* Filter */, facetCollector)