bleveext

type BoostingQuery ¶

type BoostingQuery struct {
	// BoostVal represents the ratio of recency to preexisitng score. The
	// default, 1.0, assigns equal importance to recency score and match score.
	// A value of 2 would relatively rank recency twice as important as match score.
	BoostVal *query.Boost
	// These fields are loaded, and used in the boost processing.
	// Predicate will be called with every field.
	Fields []string
	// Return true if BoostVal should be applied to this hit.
	Predicate BoostingQueryPredicate
	// contains filtered or unexported fields
}

func NewBoostingQuery(base query.Query, fields []string, predicate BoostingQueryPredicate) *BoostingQuery

func (q *BoostingQuery) Boost() float64

func (q *BoostingQuery) Searcher(ctx context.Context, i index.IndexReader, m mapping.IndexMapping, options search.SearcherOptions) (search.Searcher, error)

func (q *BoostingQuery) SetBoost(b float64)

type BoostingQueryPredicate ¶

type BoostingQueryPredicate func(field string, term []byte, isPartOfMatch bool) *query.Boost

BoostingQueryPredicate is called with a search field, term, and whether the field was part of the match, or was included just for the purposes of the BoostingQuery.

For example, maybe if any of 3 fields match, the document should be boosted. The predicate would be called with all three fields, but only those with isPartOfMatch should return a non-nil query.Boost.

Additionally, perhaps some documents should be boosted merely because of their value ("sale" items). In this case, you would likely ignore isPartOfMatch and instead compare against term.