Example #1
0
func (q *MatchPhraseQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, explain bool) (search.Searcher, error) {
	field := q.Field
	if q.Field == "" {
		field = m.DefaultSearchField()
	}

	analyzerName := ""
	if q.Analyzer != "" {
		analyzerName = q.Analyzer
	} else {
		analyzerName = m.AnalyzerNameForPath(field)
	}
	analyzer := m.AnalyzerNamed(analyzerName)
	if analyzer == nil {
		return nil, fmt.Errorf("no analyzer named '%s' registered", q.Analyzer)
	}

	tokens := analyzer.Analyze([]byte(q.MatchPhrase))
	if len(tokens) > 0 {
		phrase := tokenStreamToPhrase(tokens)
		phraseQuery := NewPhraseQuery(phrase, field)
		phraseQuery.SetBoost(q.Boost.Value())
		return phraseQuery.Searcher(i, m, explain)
	}
	noneQuery := NewMatchNoneQuery()
	return noneQuery.Searcher(i, m, explain)
}
Example #2
0
func (q *allMatchQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, explain bool) (search.Searcher, error) {

	field := q.FieldVal
	if q.FieldVal == "" {
		field = m.DefaultSearchField()
	}
	analyzerName := m.AnalyzerNameForPath(field)
	analyzer := m.AnalyzerNamed(analyzerName)
	tokens := analyzer.Analyze([]byte(q.Match))
	if len(tokens) == 0 {
		noneQuery := bleve.NewMatchNoneQuery()
		return noneQuery.Searcher(i, m, explain)
	}

	tqs := make([]query.Query, len(tokens))
	for i, token := range tokens {
		tq := bleve.NewTermQuery(string(token.Term))
		tq.SetField(field)
		tq.SetBoost(q.BoostVal)
		tqs[i] = tq
	}
	allQuery := bleve.NewConjunctionQuery(tqs...)
	allQuery.SetBoost(q.BoostVal)
	return allQuery.Searcher(i, m, explain)
}
Example #3
0
func (q *MatchQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, explain bool) (search.Searcher, error) {

	field := q.Field
	if q.Field == "" {
		field = m.DefaultSearchField()
	}

	analyzerName := ""
	if q.Analyzer != "" {
		analyzerName = q.Analyzer
	} else {
		analyzerName = m.AnalyzerNameForPath(field)
	}
	analyzer := m.AnalyzerNamed(analyzerName)

	if analyzer == nil {
		return nil, fmt.Errorf("no analyzer named '%s' registered", q.Analyzer)
	}

	tokens := analyzer.Analyze([]byte(q.Match))
	if len(tokens) > 0 {

		tqs := make([]Query, len(tokens))
		if q.Fuzziness != 0 {
			for i, token := range tokens {
				query := NewFuzzyQuery(string(token.Term))
				query.SetFuzziness(q.Fuzziness)
				query.SetPrefix(q.Prefix)
				query.SetField(field)
				query.SetBoost(q.Boost.Value())
				tqs[i] = query
			}
		} else {
			for i, token := range tokens {
				tq := NewTermQuery(string(token.Term))
				tq.SetField(field)
				tq.SetBoost(q.Boost.Value())
				tqs[i] = tq
			}
		}

		switch q.Operator {
		case MatchQueryOperatorOr:
			shouldQuery := NewDisjunctionQuery(tqs)
			shouldQuery.SetMin(1)
			shouldQuery.SetBoost(q.Boost.Value())
			return shouldQuery.Searcher(i, m, explain)

		case MatchQueryOperatorAnd:
			mustQuery := NewConjunctionQuery(tqs)
			mustQuery.SetBoost(q.Boost.Value())
			return mustQuery.Searcher(i, m, explain)

		default:
			return nil, fmt.Errorf("unhandled operator %d", q.Operator)
		}
	}
	noneQuery := NewMatchNoneQuery()
	return noneQuery.Searcher(i, m, explain)
}