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81 lines
2.1 KiB
81 lines
2.1 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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// WildcardQuery matches documents that have fields matching a wildcard |
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// expression (not analyzed). Supported wildcards are *, which matches |
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// any character sequence (including the empty one), and ?, which matches |
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// any single character. Note this query can be slow, as it needs to iterate |
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// over many terms. In order to prevent extremely slow wildcard queries, |
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// a wildcard term should not start with one of the wildcards * or ?. |
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// The wildcard query maps to Lucene WildcardQuery. |
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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-wildcard-query.html |
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type WildcardQuery struct { |
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name string |
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wildcard 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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// NewWildcardQuery creates and initializes a new WildcardQuery. |
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func NewWildcardQuery(name, wildcard string) *WildcardQuery { |
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return &WildcardQuery{ |
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name: name, |
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wildcard: wildcard, |
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} |
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} |
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// Boost sets the boost for this query. |
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func (q *WildcardQuery) Boost(boost float64) *WildcardQuery { |
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q.boost = &boost |
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return q |
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} |
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func (q *WildcardQuery) Rewrite(rewrite string) *WildcardQuery { |
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q.rewrite = rewrite |
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return q |
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} |
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// QueryName sets the name of this query. |
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func (q *WildcardQuery) QueryName(queryName string) *WildcardQuery { |
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q.queryName = queryName |
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return q |
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} |
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// Source returns the JSON serializable body of this query. |
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func (q *WildcardQuery) Source() (interface{}, error) { |
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// { |
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// "wildcard" : { |
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// "user" : { |
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// "wildcard" : "ki*y", |
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// "boost" : 1.0 |
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// } |
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// } |
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source := make(map[string]interface{}) |
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query := make(map[string]interface{}) |
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source["wildcard"] = query |
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wq := make(map[string]interface{}) |
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query[q.name] = wq |
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wq["wildcard"] = q.wildcard |
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if q.boost != nil { |
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wq["boost"] = *q.boost |
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} |
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if q.rewrite != "" { |
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wq["rewrite"] = q.rewrite |
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} |
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if q.queryName != "" { |
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wq["_name"] = q.queryName |
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} |
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return source, nil |
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}
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