Initial commit

This commit is the initial commit for a Go library providing an
idiomatic, easy-to-use query builder for ElasticSearch. The library can
build queries and execute them using the structures from the official Go
SDK provided by the ES project (https://github.com/elastic/go-elasticsearch).

The library currently provides the capabilities to create and execute
simple ElasticSearch queries, specifically Match queries (match,
match_bool_prefix, match_phrase and match_phrase_prefix), Match All
queries (match_all, match_none), and all of the Term-level queries (e.g.
range, regexp, etc.).

Unit tests are included for each support query, and the code is linted
using golangci-lint (see enabled linters in .golangci-lint). The unit
tests currently only verify the builder creates valid JSON queries and
does not attempt to actually run queries against a (mock) ES instance.
This commit is contained in:
Ido Perlmuter 2020-02-18 14:00:15 +02:00
parent b6dbef6245
commit 9ef149ec94
11 changed files with 921 additions and 0 deletions

27
.golangci.yml Normal file
View File

@ -0,0 +1,27 @@
linters:
disable-all: true
enable:
- deadcode
- errcheck
- gosimple
- govet
- ineffassign
- staticcheck
- structcheck
- typecheck
- unused
- varcheck
- dupl
- funlen
- goconst
- gocyclo
- gocritic
- goimports
- goprintffuncname
- gosec
- lll
- misspell
- nakedret
- prealloc
- unconvert
- unparam

41
es.go Normal file
View File

@ -0,0 +1,41 @@
package esquery
import (
"bytes"
"encoding/json"
"fmt"
"github.com/elastic/go-elasticsearch/esapi"
)
type ESQuery struct {
Query json.Marshaler `json:"query"`
}
func encode(q json.Marshaler, b *bytes.Buffer) (err error) {
b.Reset()
err = json.NewEncoder(b).Encode(q)
if err != nil {
return fmt.Errorf("failed encoding query to JSON: %w", err)
}
return nil
}
func search(q json.Marshaler, api *esapi.API, o ...func(*esapi.SearchRequest)) (res *esapi.Response, err error) {
var b bytes.Buffer
err = encode(ESQuery{q}, &b)
if err != nil {
return res, err
}
opts := append([]func(*esapi.SearchRequest){api.Search.WithBody(&b)}, o...)
return api.Search(opts...)
}
func (q ESQuery) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]json.Marshaler{
"query": q.Query,
})
}

27
es_test.go Normal file
View File

@ -0,0 +1,27 @@
package esquery
import (
"bytes"
"encoding/json"
"testing"
)
type queryTest struct {
name string
q json.Marshaler
expJSON string
}
func runTests(t *testing.T, tests []queryTest) {
for _, test := range tests {
var b bytes.Buffer
t.Run(test.name, func(t *testing.T) {
err := encode(test.q, &b)
if err != nil {
t.Errorf("unexpectedly failed: %s", err)
} else if b.String() != test.expJSON {
t.Errorf("expected %q, got %q", test.expJSON, b.String())
}
})
}
}

5
go.mod Normal file
View File

@ -0,0 +1,5 @@
module bitbucket.org/scalock/esquery
go 1.13
require github.com/elastic/go-elasticsearch v0.0.0

2
go.sum Normal file
View File

@ -0,0 +1,2 @@
github.com/elastic/go-elasticsearch v0.0.0 h1:Pd5fqOuBxKxv83b0+xOAJDAkziWYwFinWnBO0y+TZaA=
github.com/elastic/go-elasticsearch v0.0.0/go.mod h1:TkBSJBuTyFdBnrNqoPc54FN0vKf5c04IdM4zuStJ7xg=

261
match.go Normal file
View File

@ -0,0 +1,261 @@
package esquery
import (
"bytes"
"encoding/json"
"errors"
"io"
"github.com/elastic/go-elasticsearch/esapi"
)
/*******************************************************************************
* Match Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-match-query.html
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-match-bool-prefix-query.html
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-match-query-phrase.html
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-match-query-phrase-prefix.html
******************************************************************************/
type matchType uint8
const (
TypeMatch matchType = iota
TypeMatchBoolPrefix
TypeMatchPhrase
TypeMatchPhrasePrefix
)
type MatchQuery struct {
field string
mType matchType
params matchParams
}
func (a MatchQuery) MarshalJSON() ([]byte, error) {
var mType string
switch a.mType {
case TypeMatch:
mType = "match"
case TypeMatchBoolPrefix:
mType = "match_bool_prefix"
case TypeMatchPhrase:
mType = "match_phrase"
case TypeMatchPhrasePrefix:
mType = "match_phrase_prefix"
}
return json.Marshal(map[string]interface{}{
mType: map[string]interface{}{
a.field: a.params,
},
})
}
func (a *MatchQuery) Run(api *esapi.API, o ...func(*esapi.SearchRequest)) (res *esapi.Response, err error) {
return search(*a, api, o...)
}
type matchParams struct {
Qry interface{} `json:"query"`
Anl string `json:"analyzer,omitempty"`
AutoGenerate *bool `json:"auto_generate_synonyms_phrase_query,omitempty"`
Fuzz string `json:"fuzziness,omitempty"`
MaxExp uint16 `json:"max_expansions,omitempty"`
PrefLen uint16 `json:"prefix_length,omitempty"`
Trans *bool `json:"transpositions,omitempty"`
FuzzyRw string `json:"fuzzy_rewrite,omitempty"`
Lent bool `json:"lenient,omitempty"`
Op MatchOperator `json:"operator,omitempty"`
MinMatch string `json:"minimum_should_match,omitempty"`
ZeroTerms string `json:"zero_terms_query,omitempty"`
Slp uint16 `json:"slop,omitempty"` // only relevant for match_phrase query
}
func Match(fieldName string, simpleQuery ...interface{}) *MatchQuery {
return newMatch(TypeMatch, fieldName, simpleQuery...)
}
func MatchBoolPrefix(fieldName string, simpleQuery ...interface{}) *MatchQuery {
return newMatch(TypeMatchBoolPrefix, fieldName, simpleQuery...)
}
func MatchPhrase(fieldName string, simpleQuery ...interface{}) *MatchQuery {
return newMatch(TypeMatchPhrase, fieldName, simpleQuery...)
}
func MatchPhrasePrefix(fieldName string, simpleQuery ...interface{}) *MatchQuery {
return newMatch(TypeMatchPhrasePrefix, fieldName, simpleQuery...)
}
func newMatch(mType matchType, fieldName string, simpleQuery ...interface{}) *MatchQuery {
var qry interface{}
if simpleQuery != nil && len(simpleQuery) > 0 {
qry = simpleQuery[len(simpleQuery)-1]
}
return &MatchQuery{
field: fieldName,
mType: mType,
params: matchParams{
Qry: qry,
},
}
}
func (q *MatchQuery) Query(data interface{}) *MatchQuery {
q.params.Qry = data
return q
}
func (q *MatchQuery) Analyzer(a string) *MatchQuery {
q.params.Anl = a
return q
}
func (q *MatchQuery) AutoGenerateSynonymsPhraseQuery(b bool) *MatchQuery {
q.params.AutoGenerate = &b
return q
}
func (q *MatchQuery) Fuzziness(f string) *MatchQuery {
q.params.Fuzz = f
return q
}
func (q *MatchQuery) MaxExpansions(e uint16) *MatchQuery {
q.params.MaxExp = e
return q
}
func (q *MatchQuery) PrefixLength(l uint16) *MatchQuery {
q.params.PrefLen = l
return q
}
func (q *MatchQuery) Transpositions(b bool) *MatchQuery {
q.params.Trans = &b
return q
}
func (q *MatchQuery) FuzzyRewrite(s string) *MatchQuery {
q.params.FuzzyRw = s
return q
}
func (q *MatchQuery) Lenient(b bool) *MatchQuery {
q.params.Lent = b
return q
}
func (q *MatchQuery) Operator(op MatchOperator) *MatchQuery {
q.params.Op = op
return q
}
func (q *MatchQuery) MinimumShouldMatch(s string) *MatchQuery {
q.params.MinMatch = s
return q
}
func (q *MatchQuery) Slop(n uint16) *MatchQuery {
q.params.Slp = n
return q
}
func (q *MatchQuery) ZeroTermsQuery(s string) *MatchQuery {
q.params.ZeroTerms = s
return q
}
func (q *MatchQuery) Reader() io.Reader {
var b bytes.Buffer
return &b
}
type MatchOperator uint8
const (
OR MatchOperator = iota
AND
)
var ErrInvalidValue = errors.New("invalid constant value")
func (a MatchOperator) MarshalJSON() ([]byte, error) {
var s string
switch a {
case OR:
s = "or"
case AND:
s = "and"
default:
return nil, ErrInvalidValue
}
return json.Marshal(s)
}
type ZeroTerms uint8
const (
None ZeroTerms = iota
All
)
func (a ZeroTerms) MarshalJSON() ([]byte, error) {
var s string
switch a {
case None:
s = "none"
case All:
s = "all"
default:
return nil, ErrInvalidValue
}
return json.Marshal(s)
}
/*******************************************************************************
* Multi-Match Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-multi-match-query.html
* NOTE: uncommented for now, article is too long
******************************************************************************/
//type MultiMatchQuery struct {
//fields []string
//mType multiMatchType
//params multiMatchQueryParams
//}
//type multiMatchType uint8
//const (
//BestFields multiMatchType = iota
//MostFields
//CrossFields
//Phrase
//PhrasePrefix
//BoolPrefix
//)
//func (a multiMatchType) MarshalJSON() ([]byte, error) {
//var s string
//switch a {
//case BestFields:
//s = "best_fields"
//case MostFields:
//s = "most_fields"
//case CrossFields:
//s = "cross_fields"
//case Phrase:
//s = "phrase"
//case PhrasePrefix:
//s = "phrase_prefix"
//case BoolPrefix:
//s = "bool_prefix"
//default:
//return nil, ErrInvalidValue
//}
//return json.Marshal(s)
//}

48
match_all.go Normal file
View File

@ -0,0 +1,48 @@
package esquery
import (
"encoding/json"
"github.com/elastic/go-elasticsearch/esapi"
)
// https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-match-all-query.html
type MatchAllQuery struct {
all bool
params matchAllParams
}
type matchAllParams struct {
Boost float32 `json:"boost,omitempty"`
}
func (a MatchAllQuery) MarshalJSON() ([]byte, error) {
var mType string
switch a.all {
case true:
mType = "match_all"
default:
mType = "match_none"
}
return json.Marshal(map[string]matchAllParams{mType: a.params})
}
func (a *MatchAllQuery) Run(api *esapi.API, o ...func(*esapi.SearchRequest)) (res *esapi.Response, err error) {
return search(*a, api, o...)
}
func MatchAll() *MatchAllQuery {
return &MatchAllQuery{all: true}
}
func (q *MatchAllQuery) Boost(b float32) *MatchAllQuery {
if q.all {
q.params.Boost = b
}
return q
}
func MatchNone() *MatchAllQuery {
return &MatchAllQuery{all: false}
}

13
match_all_test.go Normal file
View File

@ -0,0 +1,13 @@
package esquery
import (
"testing"
)
func TestMatchAll(t *testing.T) {
runTests(t, []queryTest{
{"match_all without a boost", MatchAll(), "{\"match_all\":{}}\n"},
{"match_all with a boost", MatchAll().Boost(2.3), "{\"match_all\":{\"boost\":2.3}}\n"},
{"match_none", MatchNone(), "{\"match_none\":{}}\n"},
})
}

15
match_test.go Normal file
View File

@ -0,0 +1,15 @@
package esquery
import (
"testing"
)
func TestMatch(t *testing.T) {
runTests(t, []queryTest{
{"simple match", Match("title", "sample text"), "{\"match\":{\"title\":{\"query\":\"sample text\"}}}\n"},
{"match with more params", Match("issue_number").Query(16).Transpositions(false).MaxExpansions(32).Operator(AND), "{\"match\":{\"issue_number\":{\"query\":16,\"max_expansions\":32,\"transpositions\":false,\"operator\":\"and\"}}}\n"},
{"match_bool_prefix", MatchBoolPrefix("title", "sample text"), "{\"match_bool_prefix\":{\"title\":{\"query\":\"sample text\"}}}\n"},
{"match_phrase", MatchPhrase("title", "sample text"), "{\"match_phrase\":{\"title\":{\"query\":\"sample text\"}}}\n"},
{"match_phrase_prefix", MatchPhrasePrefix("title", "sample text"), "{\"match_phrase_prefix\":{\"title\":{\"query\":\"sample text\"}}}\n"},
})
}

449
term_level.go Normal file
View File

@ -0,0 +1,449 @@
package esquery
import (
"encoding/json"
)
/*******************************************************************************
* Exists Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-exists-query.html
******************************************************************************/
type ExistsQuery string
func Exists(field string) *ExistsQuery {
q := ExistsQuery(field)
return &q
}
func (q ExistsQuery) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]interface{}{
"exists": map[string]string{
"field": string(q),
},
})
}
/*******************************************************************************
* IDs Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-ids-query.html
******************************************************************************/
type IDsQuery []string
func IDs(vals ...string) *IDsQuery {
q := IDsQuery(vals)
return &q
}
func (q IDsQuery) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]interface{}{
"ids": map[string][]string{
"values": []string(q),
},
})
}
/*******************************************************************************
* Prefix Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-prefix-query.html
******************************************************************************/
type PrefixQuery struct {
field string
params prefixQueryParams
}
type prefixQueryParams struct {
Value string `json:"value"`
Rewrite string `json:"rewrite,omitempty"`
}
func Prefix(field, value string) *PrefixQuery {
return &PrefixQuery{
field: field,
params: prefixQueryParams{Value: value},
}
}
func (q *PrefixQuery) Rewrite(s string) *PrefixQuery {
q.params.Rewrite = s
return q
}
func (q PrefixQuery) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]interface{}{
"prefix": map[string]prefixQueryParams{
q.field: q.params,
},
})
}
/*******************************************************************************
* Range Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-range-query.html
******************************************************************************/
type RangeQuery struct {
field string
params rangeQueryParams
}
type rangeQueryParams struct {
Gt interface{} `json:"gt,omitempty"`
Gte interface{} `json:"gte,omitempty"`
Lt interface{} `json:"lt,omitempty"`
Lte interface{} `json:"lte,omitempty"`
Format string `json:"format,omitempty"`
Relation RangeRelation `json:"relation,omitempty"`
TimeZone string `json:"time_zone,omitempty"`
Boost float32 `json:"boost,omitempty"`
}
func Range(field string) *RangeQuery {
return &RangeQuery{field: field}
}
func (a *RangeQuery) Gt(val interface{}) *RangeQuery {
a.params.Gt = val
return a
}
func (a *RangeQuery) Gte(val interface{}) *RangeQuery {
a.params.Gte = val
return a
}
func (a *RangeQuery) Lt(val interface{}) *RangeQuery {
a.params.Lt = val
return a
}
func (a *RangeQuery) Lte(val interface{}) *RangeQuery {
a.params.Lte = val
return a
}
func (a *RangeQuery) Format(f string) *RangeQuery {
a.params.Format = f
return a
}
func (a *RangeQuery) Relation(r RangeRelation) *RangeQuery {
a.params.Relation = r
return a
}
func (a *RangeQuery) TimeZone(zone string) *RangeQuery {
a.params.TimeZone = zone
return a
}
func (a *RangeQuery) Boost(b float32) *RangeQuery {
a.params.Boost = b
return a
}
func (a RangeQuery) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]interface{}{
"range": map[string]rangeQueryParams{
a.field: a.params,
},
})
}
type RangeRelation uint8
const (
INTERSECTS RangeRelation = iota
CONTAINS
WITHIN
)
func (a RangeRelation) MarshalJSON() ([]byte, error) {
var s string
switch a {
case INTERSECTS:
s = "INTERSECTS"
case CONTAINS:
s = "CONTAINS"
case WITHIN:
s = "WITHIN"
default:
return nil, ErrInvalidValue
}
return json.Marshal(s)
}
/*******************************************************************************
* Regexp Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-regexp-query.html
******************************************************************************/
type RegexpQuery struct {
field string
wildcard bool
params regexpQueryParams
}
type regexpQueryParams struct {
Value string `json:"value"`
Flags string `json:"flags,omitempty"`
MaxDeterminizedStates uint16 `json:"max_determinized_states,omitempty"`
Rewrite string `json:"rewrite,omitempty"`
}
func Regexp(field, value string) *RegexpQuery {
return &RegexpQuery{
field: field,
params: regexpQueryParams{
Value: value,
},
}
}
func (q *RegexpQuery) Value(v string) *RegexpQuery {
q.params.Value = v
return q
}
func (q *RegexpQuery) Flags(f string) *RegexpQuery {
if !q.wildcard {
q.params.Flags = f
}
return q
}
func (q *RegexpQuery) MaxDeterminizedStates(m uint16) *RegexpQuery {
if !q.wildcard {
q.params.MaxDeterminizedStates = m
}
return q
}
func (q *RegexpQuery) Rewrite(r string) *RegexpQuery {
q.params.Rewrite = r
return q
}
func (q RegexpQuery) MarshalJSON() ([]byte, error) {
var qType string
if q.wildcard {
qType = "wildcard"
} else {
qType = "regexp"
}
return json.Marshal(map[string]interface{}{
qType: map[string]regexpQueryParams{
q.field: q.params,
},
})
}
/*******************************************************************************
* Wildcard Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-wildcard-query.html
******************************************************************************/
func Wildcard(field, value string) *RegexpQuery {
return &RegexpQuery{
field: field,
wildcard: true,
params: regexpQueryParams{
Value: value,
},
}
}
/*******************************************************************************
* Fuzzy Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-fuzzy-query.html
******************************************************************************/
type FuzzyQuery struct {
field string
params fuzzyQueryParams
}
type fuzzyQueryParams struct {
Value string `json:"value"`
Fuzziness string `json:"fuzziness,omitempty"`
MaxExpansions uint16 `json:"max_expansions,omitempty"`
PrefixLength uint16 `json:"prefix_length,omitempty"`
Transpositions *bool `json:"transpositions,omitempty"`
Rewrite string `json:"rewrite,omitempty"`
}
func Fuzzy(field, value string) *FuzzyQuery {
return &FuzzyQuery{
field: field,
params: fuzzyQueryParams{
Value: value,
},
}
}
func (q *FuzzyQuery) Value(val string) *FuzzyQuery {
q.params.Value = val
return q
}
func (q *FuzzyQuery) Fuzziness(fuzz string) *FuzzyQuery {
q.params.Fuzziness = fuzz
return q
}
func (q *FuzzyQuery) MaxExpansions(m uint16) *FuzzyQuery {
q.params.MaxExpansions = m
return q
}
func (q *FuzzyQuery) PrefixLength(l uint16) *FuzzyQuery {
q.params.PrefixLength = l
return q
}
func (q *FuzzyQuery) Transpositions(b bool) *FuzzyQuery {
q.params.Transpositions = &b
return q
}
func (q *FuzzyQuery) Rewrite(s string) *FuzzyQuery {
q.params.Rewrite = s
return q
}
func (q FuzzyQuery) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]interface{}{
"fuzzy": map[string]fuzzyQueryParams{
q.field: q.params,
},
})
}
/*******************************************************************************
* Term Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-term-query.html
******************************************************************************/
type TermQuery struct {
field string
params termQueryParams
}
type termQueryParams struct {
Value interface{} `json:"value"`
Boost float32 `json:"boost,omitempty"`
}
func Term(field string, value interface{}) *TermQuery {
return &TermQuery{
field: field,
params: termQueryParams{
Value: value,
},
}
}
func (q *TermQuery) Value(val interface{}) *TermQuery {
q.params.Value = val
return q
}
func (q *TermQuery) Boost(b float32) *TermQuery {
q.params.Boost = b
return q
}
func (q TermQuery) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]interface{}{
"term": map[string]termQueryParams{
q.field: q.params,
},
})
}
/*******************************************************************************
* Terms Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-terms-query.html
******************************************************************************/
type TermsQuery struct {
field string
values []interface{}
boost float32
}
func Terms(field string, values ...interface{}) *TermsQuery {
return &TermsQuery{
field: field,
values: values,
}
}
func (q *TermsQuery) Values(values ...interface{}) *TermsQuery {
q.values = values
return q
}
func (q *TermsQuery) Boost(b float32) *TermsQuery {
q.boost = b
return q
}
func (q TermsQuery) MarshalJSON() ([]byte, error) {
innerMap := map[string]interface{}{q.field: q.values}
if q.boost > 0 {
innerMap["boost"] = q.boost
}
return json.Marshal(map[string]interface{}{"terms": innerMap})
}
/*******************************************************************************
* Term Set Queries
* https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-terms-set-query.html
******************************************************************************/
type TermsSetQuery struct {
field string
params termsSetQueryParams
}
type termsSetQueryParams struct {
Terms []string `json:"terms"`
MinimumShouldMatchField string `json:"minimum_should_match_field,omitempty"`
MinimumShouldMatchScript string `json:"minimum_should_match_script,omitempty"`
}
func TermsSet(field string, terms ...string) *TermsSetQuery {
return &TermsSetQuery{
field: field,
params: termsSetQueryParams{
Terms: terms,
},
}
}
func (q *TermsSetQuery) Terms(terms ...string) *TermsSetQuery {
q.params.Terms = terms
return q
}
func (q *TermsSetQuery) MinimumShouldMatchField(field string) *TermsSetQuery {
q.params.MinimumShouldMatchField = field
return q
}
func (q *TermsSetQuery) MinimumShouldMatchScript(script string) *TermsSetQuery {
q.params.MinimumShouldMatchScript = script
return q
}
func (q TermsSetQuery) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]interface{}{
"terms_set": map[string]termsSetQueryParams{
q.field: q.params,
},
})
}

33
term_level_test.go Normal file
View File

@ -0,0 +1,33 @@
package esquery
import (
"testing"
)
func TestTermLevel(t *testing.T) {
runTests(t, []queryTest{
{"exists", Exists("title"), "{\"exists\":{\"field\":\"title\"}}\n"},
{"ids", IDs("1", "4", "100"), "{\"ids\":{\"values\":[\"1\",\"4\",\"100\"]}}\n"},
{"simple prefix", Prefix("user", "ki"), "{\"prefix\":{\"user\":{\"value\":\"ki\"}}}\n"},
{"complex prefix", Prefix("user", "ki").Rewrite("ji"), "{\"prefix\":{\"user\":{\"value\":\"ki\",\"rewrite\":\"ji\"}}}\n"},
{"int range", Range("age").Gte(10).Lte(20).Boost(2.0), "{\"range\":{\"age\":{\"gte\":10,\"lte\":20,\"boost\":2}}}\n"},
{"string range", Range("timestamp").Gte("now-1d/d").Lt("now/d").Relation(CONTAINS), "{\"range\":{\"timestamp\":{\"gte\":\"now-1d/d\",\"lt\":\"now/d\",\"relation\":\"CONTAINS\"}}}\n"},
{"regexp", Regexp("user", "k.*y").Flags("ALL").MaxDeterminizedStates(10000).Rewrite("constant_score"), "{\"regexp\":{\"user\":{\"value\":\"k.*y\",\"flags\":\"ALL\",\"max_determinized_states\":10000,\"rewrite\":\"constant_score\"}}}\n"},
{"wildcard", Wildcard("user", "ki*y").Rewrite("constant_score"), "{\"wildcard\":{\"user\":{\"value\":\"ki*y\",\"rewrite\":\"constant_score\"}}}\n"},
{"fuzzy", Fuzzy("user", "ki").Fuzziness("AUTO").MaxExpansions(50).Transpositions(true), "{\"fuzzy\":{\"user\":{\"value\":\"ki\",\"fuzziness\":\"AUTO\",\"max_expansions\":50,\"transpositions\":true}}}\n"},
{"term", Term("user", "Kimchy").Boost(1.3), "{\"term\":{\"user\":{\"value\":\"Kimchy\",\"boost\":1.3}}}\n"},
{"terms", Terms("user").Values("bla", "pl").Boost(1.3), "{\"terms\":{\"boost\":1.3,\"user\":[\"bla\",\"pl\"]}}\n"},
{"terms_set", TermsSet("programming_languages", "go", "rust", "COBOL").MinimumShouldMatchField("required_matches"), "{\"terms_set\":{\"programming_languages\":{\"terms\":[\"go\",\"rust\",\"COBOL\"],\"minimum_should_match_field\":\"required_matches\"}}}\n"},
})
}