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82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
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// 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/7.0/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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