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// Copyright 2012-2015 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
// Matches documents that have fields containing terms
// with a specified prefix (not analyzed).
// For more details, see
// http://www.elasticsearch.org/guide/reference/query-dsl/prefix-query.html
type PrefixQuery struct {
Query
name string
prefix string
boost *float32
rewrite string
queryName string
}
// Creates a new prefix query.
func NewPrefixQuery(name string, prefix string) PrefixQuery {
q := PrefixQuery{name: name, prefix: prefix}
return q
}
func (q PrefixQuery) Boost(boost float32) PrefixQuery {
q.boost = &boost
return q
}
func (q PrefixQuery) Rewrite(rewrite string) PrefixQuery {
q.rewrite = rewrite
return q
}
func (q PrefixQuery) QueryName(queryName string) PrefixQuery {
q.queryName = queryName
return q
}
// Creates the query source for the prefix query.
func (q PrefixQuery) Source() interface{} {
// {
// "prefix" : {
// "user" : {
// "prefix" : "ki",
// "boost" : 2.0
// }
// }
// }
source := make(map[string]interface{})
query := make(map[string]interface{})
source["prefix"] = query
if q.boost == nil && q.rewrite == "" && q.queryName == "" {
query[q.name] = q.prefix
} else {
subQuery := make(map[string]interface{})
subQuery["prefix"] = q.prefix
if q.boost != nil {
subQuery["boost"] = *q.boost
}
if q.rewrite != "" {
subQuery["rewrite"] = q.rewrite
}
if q.queryName != "" {
subQuery["_name"] = q.queryName
}
query[q.name] = subQuery
}
return source
}
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