From 622998add12734a6c2b5d79918338a4d6dca7ce6 Mon Sep 17 00:00:00 2001 From: George Goldberg Date: Tue, 9 May 2017 14:13:24 +0100 Subject: PLT-6398: Add dependency on go elastic search library. (#6340) --- .../elastic.v5/search_queries_multi_match.go | 275 +++++++++++++++++++++ 1 file changed, 275 insertions(+) create mode 100644 vendor/gopkg.in/olivere/elastic.v5/search_queries_multi_match.go (limited to 'vendor/gopkg.in/olivere/elastic.v5/search_queries_multi_match.go') diff --git a/vendor/gopkg.in/olivere/elastic.v5/search_queries_multi_match.go b/vendor/gopkg.in/olivere/elastic.v5/search_queries_multi_match.go new file mode 100644 index 000000000..9a149fed5 --- /dev/null +++ b/vendor/gopkg.in/olivere/elastic.v5/search_queries_multi_match.go @@ -0,0 +1,275 @@ +// Copyright 2012-present Oliver Eilhard. All rights reserved. +// Use of this source code is governed by a MIT-license. +// See http://olivere.mit-license.org/license.txt for details. + +package elastic + +import ( + "fmt" + "strings" +) + +// MultiMatchQuery builds on the MatchQuery to allow multi-field queries. +// +// For more details, see +// https://www.elastic.co/guide/en/elasticsearch/reference/5.2/query-dsl-multi-match-query.html +type MultiMatchQuery struct { + text interface{} + fields []string + fieldBoosts map[string]*float64 + typ string // best_fields, boolean, most_fields, cross_fields, phrase, phrase_prefix + operator string // AND or OR + analyzer string + boost *float64 + slop *int + fuzziness string + prefixLength *int + maxExpansions *int + minimumShouldMatch string + rewrite string + fuzzyRewrite string + tieBreaker *float64 + lenient *bool + cutoffFrequency *float64 + zeroTermsQuery string + queryName string +} + +// MultiMatchQuery creates and initializes a new MultiMatchQuery. +func NewMultiMatchQuery(text interface{}, fields ...string) *MultiMatchQuery { + q := &MultiMatchQuery{ + text: text, + fields: make([]string, 0), + fieldBoosts: make(map[string]*float64), + } + q.fields = append(q.fields, fields...) + return q +} + +// Field adds a field to run the multi match against. +func (q *MultiMatchQuery) Field(field string) *MultiMatchQuery { + q.fields = append(q.fields, field) + return q +} + +// FieldWithBoost adds a field to run the multi match against with a specific boost. +func (q *MultiMatchQuery) FieldWithBoost(field string, boost float64) *MultiMatchQuery { + q.fields = append(q.fields, field) + q.fieldBoosts[field] = &boost + return q +} + +// Type can be "best_fields", "boolean", "most_fields", "cross_fields", +// "phrase", or "phrase_prefix". +func (q *MultiMatchQuery) Type(typ string) *MultiMatchQuery { + var zero = float64(0.0) + var one = float64(1.0) + + switch strings.ToLower(typ) { + default: // best_fields / boolean + q.typ = "best_fields" + q.tieBreaker = &zero + case "most_fields": + q.typ = "most_fields" + q.tieBreaker = &one + case "cross_fields": + q.typ = "cross_fields" + q.tieBreaker = &zero + case "phrase": + q.typ = "phrase" + q.tieBreaker = &zero + case "phrase_prefix": + q.typ = "phrase_prefix" + q.tieBreaker = &zero + } + return q +} + +// Operator sets the operator to use when using boolean query. +// It can be either AND or OR (default). +func (q *MultiMatchQuery) Operator(operator string) *MultiMatchQuery { + q.operator = operator + return q +} + +// Analyzer sets the analyzer to use explicitly. It defaults to use explicit +// mapping config for the field, or, if not set, the default search analyzer. +func (q *MultiMatchQuery) Analyzer(analyzer string) *MultiMatchQuery { + q.analyzer = analyzer + return q +} + +// Boost sets the boost for this query. +func (q *MultiMatchQuery) Boost(boost float64) *MultiMatchQuery { + q.boost = &boost + return q +} + +// Slop sets the phrase slop if evaluated to a phrase query type. +func (q *MultiMatchQuery) Slop(slop int) *MultiMatchQuery { + q.slop = &slop + return q +} + +// Fuzziness sets the fuzziness used when evaluated to a fuzzy query type. +// It defaults to "AUTO". +func (q *MultiMatchQuery) Fuzziness(fuzziness string) *MultiMatchQuery { + q.fuzziness = fuzziness + return q +} + +// PrefixLength for the fuzzy process. +func (q *MultiMatchQuery) PrefixLength(prefixLength int) *MultiMatchQuery { + q.prefixLength = &prefixLength + return q +} + +// MaxExpansions is the number of term expansions to use when using fuzzy +// or prefix type query. It defaults to unbounded so it's recommended +// to set it to a reasonable value for faster execution. +func (q *MultiMatchQuery) MaxExpansions(maxExpansions int) *MultiMatchQuery { + q.maxExpansions = &maxExpansions + return q +} + +// MinimumShouldMatch represents the minimum number of optional should clauses +// to match. +func (q *MultiMatchQuery) MinimumShouldMatch(minimumShouldMatch string) *MultiMatchQuery { + q.minimumShouldMatch = minimumShouldMatch + return q +} + +func (q *MultiMatchQuery) Rewrite(rewrite string) *MultiMatchQuery { + q.rewrite = rewrite + return q +} + +func (q *MultiMatchQuery) FuzzyRewrite(fuzzyRewrite string) *MultiMatchQuery { + q.fuzzyRewrite = fuzzyRewrite + return q +} + +// TieBreaker for "best-match" disjunction queries (OR queries). +// The tie breaker capability allows documents that match more than one +// query clause (in this case on more than one field) to be scored better +// than documents that match only the best of the fields, without confusing +// this with the better case of two distinct matches in the multiple fields. +// +// A tie-breaker value of 1.0 is interpreted as a signal to score queries as +// "most-match" queries where all matching query clauses are considered for scoring. +func (q *MultiMatchQuery) TieBreaker(tieBreaker float64) *MultiMatchQuery { + q.tieBreaker = &tieBreaker + return q +} + +// Lenient indicates whether format based failures will be ignored. +func (q *MultiMatchQuery) Lenient(lenient bool) *MultiMatchQuery { + q.lenient = &lenient + return q +} + +// CutoffFrequency sets a cutoff value in [0..1] (or absolute number >=1) +// representing the maximum threshold of a terms document frequency to be +// considered a low frequency term. +func (q *MultiMatchQuery) CutoffFrequency(cutoff float64) *MultiMatchQuery { + q.cutoffFrequency = &cutoff + return q +} + +// ZeroTermsQuery can be "all" or "none". +func (q *MultiMatchQuery) ZeroTermsQuery(zeroTermsQuery string) *MultiMatchQuery { + q.zeroTermsQuery = zeroTermsQuery + return q +} + +// QueryName sets the query name for the filter that can be used when +// searching for matched filters per hit. +func (q *MultiMatchQuery) QueryName(queryName string) *MultiMatchQuery { + q.queryName = queryName + return q +} + +// Source returns JSON for the query. +func (q *MultiMatchQuery) Source() (interface{}, error) { + // + // { + // "multi_match" : { + // "query" : "this is a test", + // "fields" : [ "subject", "message" ] + // } + // } + + source := make(map[string]interface{}) + + multiMatch := make(map[string]interface{}) + source["multi_match"] = multiMatch + + multiMatch["query"] = q.text + + if len(q.fields) > 0 { + var fields []string + for _, field := range q.fields { + if boost, found := q.fieldBoosts[field]; found { + if boost != nil { + fields = append(fields, fmt.Sprintf("%s^%f", field, *boost)) + } else { + fields = append(fields, field) + } + } else { + fields = append(fields, field) + } + } + multiMatch["fields"] = fields + } + + if q.typ != "" { + multiMatch["type"] = q.typ + } + + if q.operator != "" { + multiMatch["operator"] = q.operator + } + if q.analyzer != "" { + multiMatch["analyzer"] = q.analyzer + } + if q.boost != nil { + multiMatch["boost"] = *q.boost + } + if q.slop != nil { + multiMatch["slop"] = *q.slop + } + if q.fuzziness != "" { + multiMatch["fuzziness"] = q.fuzziness + } + if q.prefixLength != nil { + multiMatch["prefix_length"] = *q.prefixLength + } + if q.maxExpansions != nil { + multiMatch["max_expansions"] = *q.maxExpansions + } + if q.minimumShouldMatch != "" { + multiMatch["minimum_should_match"] = q.minimumShouldMatch + } + if q.rewrite != "" { + multiMatch["rewrite"] = q.rewrite + } + if q.fuzzyRewrite != "" { + multiMatch["fuzzy_rewrite"] = q.fuzzyRewrite + } + if q.tieBreaker != nil { + multiMatch["tie_breaker"] = *q.tieBreaker + } + if q.lenient != nil { + multiMatch["lenient"] = *q.lenient + } + if q.cutoffFrequency != nil { + multiMatch["cutoff_frequency"] = *q.cutoffFrequency + } + if q.zeroTermsQuery != "" { + multiMatch["zero_terms_query"] = q.zeroTermsQuery + } + if q.queryName != "" { + multiMatch["_name"] = q.queryName + } + return source, nil +} -- cgit v1.2.3-1-g7c22