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// 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"
// A bool query matches documents matching boolean
// combinations of other queries.
// For more details, see:
// https://www.elastic.co/guide/en/elasticsearch/reference/5.2/query-dsl-bool-query.html
type BoolQuery struct {
Query
mustClauses []Query
mustNotClauses []Query
filterClauses []Query
shouldClauses []Query
boost *float64
disableCoord *bool
minimumShouldMatch string
adjustPureNegative *bool
queryName string
}
// Creates a new bool query.
func NewBoolQuery() *BoolQuery {
return &BoolQuery{
mustClauses: make([]Query, 0),
mustNotClauses: make([]Query, 0),
filterClauses: make([]Query, 0),
shouldClauses: make([]Query, 0),
}
}
func (q *BoolQuery) Must(queries ...Query) *BoolQuery {
q.mustClauses = append(q.mustClauses, queries...)
return q
}
func (q *BoolQuery) MustNot(queries ...Query) *BoolQuery {
q.mustNotClauses = append(q.mustNotClauses, queries...)
return q
}
func (q *BoolQuery) Filter(filters ...Query) *BoolQuery {
q.filterClauses = append(q.filterClauses, filters...)
return q
}
func (q *BoolQuery) Should(queries ...Query) *BoolQuery {
q.shouldClauses = append(q.shouldClauses, queries...)
return q
}
func (q *BoolQuery) Boost(boost float64) *BoolQuery {
q.boost = &boost
return q
}
func (q *BoolQuery) DisableCoord(disableCoord bool) *BoolQuery {
q.disableCoord = &disableCoord
return q
}
func (q *BoolQuery) MinimumShouldMatch(minimumShouldMatch string) *BoolQuery {
q.minimumShouldMatch = minimumShouldMatch
return q
}
func (q *BoolQuery) MinimumNumberShouldMatch(minimumNumberShouldMatch int) *BoolQuery {
q.minimumShouldMatch = fmt.Sprintf("%d", minimumNumberShouldMatch)
return q
}
func (q *BoolQuery) AdjustPureNegative(adjustPureNegative bool) *BoolQuery {
q.adjustPureNegative = &adjustPureNegative
return q
}
func (q *BoolQuery) QueryName(queryName string) *BoolQuery {
q.queryName = queryName
return q
}
// Creates the query source for the bool query.
func (q *BoolQuery) Source() (interface{}, error) {
// {
// "bool" : {
// "must" : {
// "term" : { "user" : "kimchy" }
// },
// "must_not" : {
// "range" : {
// "age" : { "from" : 10, "to" : 20 }
// }
// },
// "filter" : [
// ...
// ]
// "should" : [
// {
// "term" : { "tag" : "wow" }
// },
// {
// "term" : { "tag" : "elasticsearch" }
// }
// ],
// "minimum_number_should_match" : 1,
// "boost" : 1.0
// }
// }
query := make(map[string]interface{})
boolClause := make(map[string]interface{})
query["bool"] = boolClause
// must
if len(q.mustClauses) == 1 {
src, err := q.mustClauses[0].Source()
if err != nil {
return nil, err
}
boolClause["must"] = src
} else if len(q.mustClauses) > 1 {
var clauses []interface{}
for _, subQuery := range q.mustClauses {
src, err := subQuery.Source()
if err != nil {
return nil, err
}
clauses = append(clauses, src)
}
boolClause["must"] = clauses
}
// must_not
if len(q.mustNotClauses) == 1 {
src, err := q.mustNotClauses[0].Source()
if err != nil {
return nil, err
}
boolClause["must_not"] = src
} else if len(q.mustNotClauses) > 1 {
var clauses []interface{}
for _, subQuery := range q.mustNotClauses {
src, err := subQuery.Source()
if err != nil {
return nil, err
}
clauses = append(clauses, src)
}
boolClause["must_not"] = clauses
}
// filter
if len(q.filterClauses) == 1 {
src, err := q.filterClauses[0].Source()
if err != nil {
return nil, err
}
boolClause["filter"] = src
} else if len(q.filterClauses) > 1 {
var clauses []interface{}
for _, subQuery := range q.filterClauses {
src, err := subQuery.Source()
if err != nil {
return nil, err
}
clauses = append(clauses, src)
}
boolClause["filter"] = clauses
}
// should
if len(q.shouldClauses) == 1 {
src, err := q.shouldClauses[0].Source()
if err != nil {
return nil, err
}
boolClause["should"] = src
} else if len(q.shouldClauses) > 1 {
var clauses []interface{}
for _, subQuery := range q.shouldClauses {
src, err := subQuery.Source()
if err != nil {
return nil, err
}
clauses = append(clauses, src)
}
boolClause["should"] = clauses
}
if q.boost != nil {
boolClause["boost"] = *q.boost
}
if q.disableCoord != nil {
boolClause["disable_coord"] = *q.disableCoord
}
if q.minimumShouldMatch != "" {
boolClause["minimum_should_match"] = q.minimumShouldMatch
}
if q.adjustPureNegative != nil {
boolClause["adjust_pure_negative"] = *q.adjustPureNegative
}
if q.queryName != "" {
boolClause["_name"] = q.queryName
}
return query, nil
}
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