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67 lines
1.7 KiB
67 lines
1.7 KiB
// Copyright 2012-present Oliver Eilhard. All rights reserved. |
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// Use of this source code is governed by a MIT-license. |
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// See http://olivere.mit-license.org/license.txt for details. |
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package elastic |
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// PrefixQuery matches documents that have fields containing terms |
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// with a specified prefix (not analyzed). |
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// |
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// For more details, see |
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// https://www.elastic.co/guide/en/elasticsearch/reference/5.2/query-dsl-prefix-query.html |
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type PrefixQuery struct { |
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name string |
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prefix string |
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boost *float64 |
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rewrite string |
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queryName string |
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} |
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// NewPrefixQuery creates and initializes a new PrefixQuery. |
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func NewPrefixQuery(name string, prefix string) *PrefixQuery { |
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return &PrefixQuery{name: name, prefix: prefix} |
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} |
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// Boost sets the boost for this query. |
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func (q *PrefixQuery) Boost(boost float64) *PrefixQuery { |
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q.boost = &boost |
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return q |
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} |
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func (q *PrefixQuery) Rewrite(rewrite string) *PrefixQuery { |
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q.rewrite = rewrite |
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return q |
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} |
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// QueryName sets the query name for the filter that can be used when |
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// searching for matched_filters per hit. |
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func (q *PrefixQuery) QueryName(queryName string) *PrefixQuery { |
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q.queryName = queryName |
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return q |
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} |
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// Source returns JSON for the query. |
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func (q *PrefixQuery) Source() (interface{}, error) { |
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source := make(map[string]interface{}) |
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query := make(map[string]interface{}) |
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source["prefix"] = query |
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if q.boost == nil && q.rewrite == "" && q.queryName == "" { |
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query[q.name] = q.prefix |
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} else { |
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subQuery := make(map[string]interface{}) |
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subQuery["value"] = q.prefix |
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if q.boost != nil { |
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subQuery["boost"] = *q.boost |
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} |
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if q.rewrite != "" { |
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subQuery["rewrite"] = q.rewrite |
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} |
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if q.queryName != "" { |
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subQuery["_name"] = q.queryName |
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} |
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query[q.name] = subQuery |
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} |
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return source, nil |
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}
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