[hibernate-issues] [Hibernate-JIRA] Updated: (HSEARCH-812) Faceting: Possibiltiy to set behaviour (SHOULD/MUST) when selecting multiple facets should (Elmer van Chastelet)

Faceting: Possibiltiy to set behaviour (SHOULD/MUST) when selecting multiple facets should (Elmer van Chastelet) ---------------------------------------------------------------------------------------------------------------- Key: HSEARCH-812 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-812 Project: Hibernate Search Issue Type: Improvement Components: query Environment: - Reporter: Elmer van Chastelet Assignee: Hardy Ferentschik Labels: faceting Fix For: 4.0 Attachments: HSEARCH-812.diff, HSEARCH-812-doc.diff Current implementation combines multiple facets from the same group by OR-ing them (SHOULD): {code} private Query createSelectionGroupQuery(FacetSelectionImpl selection) { BooleanQuery orQuery = new BooleanQuery(); for ( Facet facet : selection.getFacetList() ) { orQuery.add( facet.getFacetQuery(), BooleanClause.Occur.SHOULD ); } return orQuery; } {code} It might be useful to also allow AND-ing the facets. Some examples: When searching for publications, I want the publications where both 'Kim' and 'John' are author When searching for recipes, I want meals with both 'tomatoes' and 'eggs'. This is in case of fields that might have mutliple values, so its working is relying on [HSEARCH-726|https://hibernate.onjira.com/browse/HSEARCH-726]. I currently have adapted the code myself, to be able to set AND/OR as default facet combinator, but this is not using the Hibernate Search Query language contexts. This improvement should be easy to implement.