1 files changed, 275 insertions, 0 deletions
diff --git a/vendor/github.com/olivere/elastic/search_queries_multi_match.go b/vendor/github.com/olivere/elastic/search_queries_multi_match.go
new file mode 100644
index 000000000..b6ff2107e
--- /dev/null
+++ b/vendor/github.com/olivere/elastic/search_queries_multi_match.go
@@ -0,0 +1,275 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"strings"
+)
+
+// MultiMatchQuery builds on the MatchQuery to allow multi-field queries.
+//
+// For more details, see
+// https://www.elastic.co/guide/en/elasticsearch/reference/6.0/query-dsl-multi-match-query.html
+type MultiMatchQuery struct {
+	text               interface{}
+	fields             []string
+	fieldBoosts        map[string]*float64
+	typ                string // best_fields, boolean, most_fields, cross_fields, phrase, phrase_prefix
+	operator           string // AND or OR
+	analyzer           string
+	boost              *float64
+	slop               *int
+	fuzziness          string
+	prefixLength       *int
+	maxExpansions      *int
+	minimumShouldMatch string
+	rewrite            string
+	fuzzyRewrite       string
+	tieBreaker         *float64
+	lenient            *bool
+	cutoffFrequency    *float64
+	zeroTermsQuery     string
+	queryName          string
+}
+
+// MultiMatchQuery creates and initializes a new MultiMatchQuery.
+func NewMultiMatchQuery(text interface{}, fields ...string) *MultiMatchQuery {
+	q := &MultiMatchQuery{
+		text:        text,
+		fields:      make([]string, 0),
+		fieldBoosts: make(map[string]*float64),
+	}
+	q.fields = append(q.fields, fields...)
+	return q
+}
+
+// Field adds a field to run the multi match against.
+func (q *MultiMatchQuery) Field(field string) *MultiMatchQuery {
+	q.fields = append(q.fields, field)
+	return q
+}
+
+// FieldWithBoost adds a field to run the multi match against with a specific boost.
+func (q *MultiMatchQuery) FieldWithBoost(field string, boost float64) *MultiMatchQuery {
+	q.fields = append(q.fields, field)
+	q.fieldBoosts[field] = &boost
+	return q
+}
+
+// Type can be "best_fields", "boolean", "most_fields", "cross_fields",
+// "phrase", or "phrase_prefix".
+func (q *MultiMatchQuery) Type(typ string) *MultiMatchQuery {
+	var zero = float64(0.0)
+	var one = float64(1.0)
+
+	switch strings.ToLower(typ) {
+	default: // best_fields / boolean
+		q.typ = "best_fields"
+		q.tieBreaker = &zero
+	case "most_fields":
+		q.typ = "most_fields"
+		q.tieBreaker = &one
+	case "cross_fields":
+		q.typ = "cross_fields"
+		q.tieBreaker = &zero
+	case "phrase":
+		q.typ = "phrase"
+		q.tieBreaker = &zero
+	case "phrase_prefix":
+		q.typ = "phrase_prefix"
+		q.tieBreaker = &zero
+	}
+	return q
+}
+
+// Operator sets the operator to use when using boolean query.
+// It can be either AND or OR (default).
+func (q *MultiMatchQuery) Operator(operator string) *MultiMatchQuery {
+	q.operator = operator
+	return q
+}
+
+// Analyzer sets the analyzer to use explicitly. It defaults to use explicit
+// mapping config for the field, or, if not set, the default search analyzer.
+func (q *MultiMatchQuery) Analyzer(analyzer string) *MultiMatchQuery {
+	q.analyzer = analyzer
+	return q
+}
+
+// Boost sets the boost for this query.
+func (q *MultiMatchQuery) Boost(boost float64) *MultiMatchQuery {
+	q.boost = &boost
+	return q
+}
+
+// Slop sets the phrase slop if evaluated to a phrase query type.
+func (q *MultiMatchQuery) Slop(slop int) *MultiMatchQuery {
+	q.slop = &slop
+	return q
+}
+
+// Fuzziness sets the fuzziness used when evaluated to a fuzzy query type.
+// It defaults to "AUTO".
+func (q *MultiMatchQuery) Fuzziness(fuzziness string) *MultiMatchQuery {
+	q.fuzziness = fuzziness
+	return q
+}
+
+// PrefixLength for the fuzzy process.
+func (q *MultiMatchQuery) PrefixLength(prefixLength int) *MultiMatchQuery {
+	q.prefixLength = &prefixLength
+	return q
+}
+
+// MaxExpansions is the number of term expansions to use when using fuzzy
+// or prefix type query. It defaults to unbounded so it's recommended
+// to set it to a reasonable value for faster execution.
+func (q *MultiMatchQuery) MaxExpansions(maxExpansions int) *MultiMatchQuery {
+	q.maxExpansions = &maxExpansions
+	return q
+}
+
+// MinimumShouldMatch represents the minimum number of optional should clauses
+// to match.
+func (q *MultiMatchQuery) MinimumShouldMatch(minimumShouldMatch string) *MultiMatchQuery {
+	q.minimumShouldMatch = minimumShouldMatch
+	return q
+}
+
+func (q *MultiMatchQuery) Rewrite(rewrite string) *MultiMatchQuery {
+	q.rewrite = rewrite
+	return q
+}
+
+func (q *MultiMatchQuery) FuzzyRewrite(fuzzyRewrite string) *MultiMatchQuery {
+	q.fuzzyRewrite = fuzzyRewrite
+	return q
+}
+
+// TieBreaker for "best-match" disjunction queries (OR queries).
+// The tie breaker capability allows documents that match more than one
+// query clause (in this case on more than one field) to be scored better
+// than documents that match only the best of the fields, without confusing
+// this with the better case of two distinct matches in the multiple fields.
+//
+// A tie-breaker value of 1.0 is interpreted as a signal to score queries as
+// "most-match" queries where all matching query clauses are considered for scoring.
+func (q *MultiMatchQuery) TieBreaker(tieBreaker float64) *MultiMatchQuery {
+	q.tieBreaker = &tieBreaker
+	return q
+}
+
+// Lenient indicates whether format based failures will be ignored.
+func (q *MultiMatchQuery) Lenient(lenient bool) *MultiMatchQuery {
+	q.lenient = &lenient
+	return q
+}
+
+// CutoffFrequency sets a cutoff value in [0..1] (or absolute number >=1)
+// representing the maximum threshold of a terms document frequency to be
+// considered a low frequency term.
+func (q *MultiMatchQuery) CutoffFrequency(cutoff float64) *MultiMatchQuery {
+	q.cutoffFrequency = &cutoff
+	return q
+}
+
+// ZeroTermsQuery can be "all" or "none".
+func (q *MultiMatchQuery) ZeroTermsQuery(zeroTermsQuery string) *MultiMatchQuery {
+	q.zeroTermsQuery = zeroTermsQuery
+	return q
+}
+
+// QueryName sets the query name for the filter that can be used when
+// searching for matched filters per hit.
+func (q *MultiMatchQuery) QueryName(queryName string) *MultiMatchQuery {
+	q.queryName = queryName
+	return q
+}
+
+// Source returns JSON for the query.
+func (q *MultiMatchQuery) Source() (interface{}, error) {
+	//
+	// {
+	//   "multi_match" : {
+	//     "query" : "this is a test",
+	//     "fields" : [ "subject", "message" ]
+	//   }
+	// }
+
+	source := make(map[string]interface{})
+
+	multiMatch := make(map[string]interface{})
+	source["multi_match"] = multiMatch
+
+	multiMatch["query"] = q.text
+
+	if len(q.fields) > 0 {
+		var fields []string
+		for _, field := range q.fields {
+			if boost, found := q.fieldBoosts[field]; found {
+				if boost != nil {
+					fields = append(fields, fmt.Sprintf("%s^%f", field, *boost))
+				} else {
+					fields = append(fields, field)
+				}
+			} else {
+				fields = append(fields, field)
+			}
+		}
+		multiMatch["fields"] = fields
+	}
+
+	if q.typ != "" {
+		multiMatch["type"] = q.typ
+	}
+
+	if q.operator != "" {
+		multiMatch["operator"] = q.operator
+	}
+	if q.analyzer != "" {
+		multiMatch["analyzer"] = q.analyzer
+	}
+	if q.boost != nil {
+		multiMatch["boost"] = *q.boost
+	}
+	if q.slop != nil {
+		multiMatch["slop"] = *q.slop
+	}
+	if q.fuzziness != "" {
+		multiMatch["fuzziness"] = q.fuzziness
+	}
+	if q.prefixLength != nil {
+		multiMatch["prefix_length"] = *q.prefixLength
+	}
+	if q.maxExpansions != nil {
+		multiMatch["max_expansions"] = *q.maxExpansions
+	}
+	if q.minimumShouldMatch != "" {
+		multiMatch["minimum_should_match"] = q.minimumShouldMatch
+	}
+	if q.rewrite != "" {
+		multiMatch["rewrite"] = q.rewrite
+	}
+	if q.fuzzyRewrite != "" {
+		multiMatch["fuzzy_rewrite"] = q.fuzzyRewrite
+	}
+	if q.tieBreaker != nil {
+		multiMatch["tie_breaker"] = *q.tieBreaker
+	}
+	if q.lenient != nil {
+		multiMatch["lenient"] = *q.lenient
+	}
+	if q.cutoffFrequency != nil {
+		multiMatch["cutoff_frequency"] = *q.cutoffFrequency
+	}
+	if q.zeroTermsQuery != "" {
+		multiMatch["zero_terms_query"] = q.zeroTermsQuery
+	}
+	if q.queryName != "" {
+		multiMatch["_name"] = q.queryName
+	}
+	return source, nil
+}