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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
// MatchPhrasePrefixQuery is the same as match_phrase, except that it allows for
// prefix matches on the last term in the text.
//
// For more details, see
// https://www.elastic.co/guide/en/elasticsearch/reference/5.6/query-dsl-match-query-phrase-prefix.html
type MatchPhrasePrefixQuery struct {
name string
value interface{}
analyzer string
slop *int
maxExpansions *int
boost *float64
queryName string
}
// NewMatchPhrasePrefixQuery creates and initializes a new MatchPhrasePrefixQuery.
func NewMatchPhrasePrefixQuery(name string, value interface{}) *MatchPhrasePrefixQuery {
return &MatchPhrasePrefixQuery{name: name, value: value}
}
// Analyzer explicitly sets the analyzer to use. It defaults to use explicit
// mapping config for the field, or, if not set, the default search analyzer.
func (q *MatchPhrasePrefixQuery) Analyzer(analyzer string) *MatchPhrasePrefixQuery {
q.analyzer = analyzer
return q
}
// Slop sets the phrase slop if evaluated to a phrase query type.
func (q *MatchPhrasePrefixQuery) Slop(slop int) *MatchPhrasePrefixQuery {
q.slop = &slop
return q
}
// MaxExpansions sets the number of term expansions to use.
func (q *MatchPhrasePrefixQuery) MaxExpansions(n int) *MatchPhrasePrefixQuery {
q.maxExpansions = &n
return q
}
// Boost sets the boost to apply to this query.
func (q *MatchPhrasePrefixQuery) Boost(boost float64) *MatchPhrasePrefixQuery {
q.boost = &boost
return q
}
// QueryName sets the query name for the filter that can be used when
// searching for matched filters per hit.
func (q *MatchPhrasePrefixQuery) QueryName(queryName string) *MatchPhrasePrefixQuery {
q.queryName = queryName
return q
}
// Source returns JSON for the function score query.
func (q *MatchPhrasePrefixQuery) Source() (interface{}, error) {
// {"match_phrase_prefix":{"name":{"query":"value","max_expansions":10}}}
source := make(map[string]interface{})
match := make(map[string]interface{})
source["match_phrase_prefix"] = match
query := make(map[string]interface{})
match[q.name] = query
query["query"] = q.value
if q.analyzer != "" {
query["analyzer"] = q.analyzer
}
if q.slop != nil {
query["slop"] = *q.slop
}
if q.maxExpansions != nil {
query["max_expansions"] = *q.maxExpansions
}
if q.boost != nil {
query["boost"] = *q.boost
}
if q.queryName != "" {
query["_name"] = q.queryName
}
return source, nil
}
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