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75 lines
1.8 KiB
Go
75 lines
1.8 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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// SpanFirstQuery spans near the beginning of a field.
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// The span first query maps to Lucene SpanFirstQuery
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//
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// See https://www.elastic.co/guide/en/elasticsearch/reference/7.7/query-dsl-span-first-query.html
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// for details.
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type SpanFirstQuery struct {
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match Query
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end int
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boost *float64
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queryName string
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}
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// NewSpanFirstQuery creates a new SpanFirstQuery.
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func NewSpanFirstQuery(query Query, end int) *SpanFirstQuery {
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return &SpanFirstQuery{
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match: query,
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end: end,
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}
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}
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// Match sets the query, e.g. a SpanTermQuery.
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func (q *SpanFirstQuery) Match(query Query) *SpanFirstQuery {
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q.match = query
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return q
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}
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// End specifies the maximum end position of the match, which needs to be positive.
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func (q *SpanFirstQuery) End(end int) *SpanFirstQuery {
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q.end = end
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return q
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}
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// Boost sets the boost for this query.
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func (q *SpanFirstQuery) Boost(boost float64) *SpanFirstQuery {
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q.boost = &boost
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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 *SpanFirstQuery) QueryName(queryName string) *SpanFirstQuery {
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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 body.
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func (q *SpanFirstQuery) Source() (interface{}, error) {
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m := make(map[string]interface{})
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c := make(map[string]interface{})
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if v := q.match; v != nil {
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src, err := q.match.Source()
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if err != nil {
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return nil, err
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}
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c["match"] = src
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}
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c["end"] = q.end
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if v := q.boost; v != nil {
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c["boost"] = *v
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}
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if v := q.queryName; v != "" {
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c["query_name"] = v
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}
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m["span_first"] = c
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return m, nil
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}
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