1// Copyright 2012-present Oliver Eilhard. All rights reserved. 2// Use of this source code is governed by a MIT-license. 3// See http://olivere.mit-license.org/license.txt for details. 4 5package elastic 6 7// MatchPhrasePrefixQuery is the same as match_phrase, except that it allows for 8// prefix matches on the last term in the text. 9// 10// For more details, see 11// https://www.elastic.co/guide/en/elasticsearch/reference/6.7/query-dsl-match-query-phrase-prefix.html 12type MatchPhrasePrefixQuery struct { 13 name string 14 value interface{} 15 analyzer string 16 slop *int 17 maxExpansions *int 18 boost *float64 19 queryName string 20} 21 22// NewMatchPhrasePrefixQuery creates and initializes a new MatchPhrasePrefixQuery. 23func NewMatchPhrasePrefixQuery(name string, value interface{}) *MatchPhrasePrefixQuery { 24 return &MatchPhrasePrefixQuery{name: name, value: value} 25} 26 27// Analyzer explicitly sets the analyzer to use. It defaults to use explicit 28// mapping config for the field, or, if not set, the default search analyzer. 29func (q *MatchPhrasePrefixQuery) Analyzer(analyzer string) *MatchPhrasePrefixQuery { 30 q.analyzer = analyzer 31 return q 32} 33 34// Slop sets the phrase slop if evaluated to a phrase query type. 35func (q *MatchPhrasePrefixQuery) Slop(slop int) *MatchPhrasePrefixQuery { 36 q.slop = &slop 37 return q 38} 39 40// MaxExpansions sets the number of term expansions to use. 41func (q *MatchPhrasePrefixQuery) MaxExpansions(n int) *MatchPhrasePrefixQuery { 42 q.maxExpansions = &n 43 return q 44} 45 46// Boost sets the boost to apply to this query. 47func (q *MatchPhrasePrefixQuery) Boost(boost float64) *MatchPhrasePrefixQuery { 48 q.boost = &boost 49 return q 50} 51 52// QueryName sets the query name for the filter that can be used when 53// searching for matched filters per hit. 54func (q *MatchPhrasePrefixQuery) QueryName(queryName string) *MatchPhrasePrefixQuery { 55 q.queryName = queryName 56 return q 57} 58 59// Source returns JSON for the function score query. 60func (q *MatchPhrasePrefixQuery) Source() (interface{}, error) { 61 // {"match_phrase_prefix":{"name":{"query":"value","max_expansions":10}}} 62 source := make(map[string]interface{}) 63 64 match := make(map[string]interface{}) 65 source["match_phrase_prefix"] = match 66 67 query := make(map[string]interface{}) 68 match[q.name] = query 69 70 query["query"] = q.value 71 72 if q.analyzer != "" { 73 query["analyzer"] = q.analyzer 74 } 75 if q.slop != nil { 76 query["slop"] = *q.slop 77 } 78 if q.maxExpansions != nil { 79 query["max_expansions"] = *q.maxExpansions 80 } 81 if q.boost != nil { 82 query["boost"] = *q.boost 83 } 84 if q.queryName != "" { 85 query["_name"] = q.queryName 86 } 87 88 return source, nil 89} 90