131 lines
4 KiB
Go
131 lines
4 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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// MatchBoolPrefixQuery query analyzes its input and constructs a bool query from the terms.
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// Each term except the last is used in a term query. The last term is used in a prefix query.
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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-match-bool-prefix-query.html
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type MatchBoolPrefixQuery struct {
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name string
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queryText interface{}
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analyzer string
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minimumShouldMatch string
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operator string
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fuzziness string
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prefixLength *int
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maxExpansions *int
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fuzzyTranspositions *bool
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fuzzyRewrite string
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boost *float64
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}
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// NewMatchBoolPrefixQuery creates and initializes a new MatchBoolPrefixQuery.
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func NewMatchBoolPrefixQuery(name string, queryText interface{}) *MatchBoolPrefixQuery {
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return &MatchBoolPrefixQuery{name: name, queryText: queryText}
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}
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// Analyzer explicitly sets the analyzer to use. It defaults to use explicit
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// mapping config for the field, or, if not set, the default search analyzer.
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func (q *MatchBoolPrefixQuery) Analyzer(analyzer string) *MatchBoolPrefixQuery {
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q.analyzer = analyzer
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return q
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}
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// MinimumShouldMatch sets the optional minimumShouldMatch value to apply to the query.
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func (q *MatchBoolPrefixQuery) MinimumShouldMatch(minimumShouldMatch string) *MatchBoolPrefixQuery {
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q.minimumShouldMatch = minimumShouldMatch
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return q
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}
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// Operator sets the operator to use when using a boolean query.
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// Can be "AND" or "OR" (default).
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func (q *MatchBoolPrefixQuery) Operator(operator string) *MatchBoolPrefixQuery {
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q.operator = operator
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return q
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}
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// Fuzziness sets the edit distance for fuzzy queries. Default is "AUTO".
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func (q *MatchBoolPrefixQuery) Fuzziness(fuzziness string) *MatchBoolPrefixQuery {
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q.fuzziness = fuzziness
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return q
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}
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// PrefixLength is the number of beginning characters left unchanged for fuzzy matching. Defaults to 0.
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func (q *MatchBoolPrefixQuery) PrefixLength(prefixLength int) *MatchBoolPrefixQuery {
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q.prefixLength = &prefixLength
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return q
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}
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// MaxExpansions sets the number of term expansions to use.
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func (q *MatchBoolPrefixQuery) MaxExpansions(n int) *MatchBoolPrefixQuery {
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q.maxExpansions = &n
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return q
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}
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// FuzzyTranspositions if true, edits for fuzzy matching include transpositions of two adjacent
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// characters (ab → ba). Defaults to true.
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func (q *MatchBoolPrefixQuery) FuzzyTranspositions(fuzzyTranspositions bool) *MatchBoolPrefixQuery {
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q.fuzzyTranspositions = &fuzzyTranspositions
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return q
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}
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// FuzzyRewrite sets the fuzzy_rewrite parameter controlling how the
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// fuzzy query will get rewritten.
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func (q *MatchBoolPrefixQuery) FuzzyRewrite(fuzzyRewrite string) *MatchBoolPrefixQuery {
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q.fuzzyRewrite = fuzzyRewrite
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return q
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}
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// Boost sets the boost to apply to this query.
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func (q *MatchBoolPrefixQuery) Boost(boost float64) *MatchBoolPrefixQuery {
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q.boost = &boost
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return q
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}
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// Source returns JSON for the function score query.
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func (q *MatchBoolPrefixQuery) Source() (interface{}, error) {
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source := make(map[string]interface{})
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match := make(map[string]interface{})
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source["match_bool_prefix"] = match
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query := make(map[string]interface{})
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match[q.name] = query
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query["query"] = q.queryText
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if q.analyzer != "" {
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query["analyzer"] = q.analyzer
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}
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if q.minimumShouldMatch != "" {
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query["minimum_should_match"] = q.minimumShouldMatch
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}
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if q.operator != "" {
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query["operator"] = q.operator
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}
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if q.fuzziness != "" {
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query["fuzziness"] = q.fuzziness
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}
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if q.prefixLength != nil {
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query["prefix_length"] = *q.prefixLength
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}
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if q.maxExpansions != nil {
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query["max_expansions"] = *q.maxExpansions
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}
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if q.fuzzyTranspositions != nil {
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query["fuzzy_transpositions"] = *q.fuzzyTranspositions
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}
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if q.fuzzyRewrite != "" {
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query["fuzzy_rewrite"] = q.fuzzyRewrite
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}
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if q.boost != nil {
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query["boost"] = *q.boost
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}
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return source, nil
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}
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