forked from Shiloh/githaven
5dbf36f356
* Issue search support elasticsearch * Fix lint * Add indexer name on app.ini * add a warnning on SearchIssuesByKeyword * improve code
125 lines
3.1 KiB
Go
125 lines
3.1 KiB
Go
// 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 "errors"
|
|
|
|
// SuggesterContextQuery is used to define context information within
|
|
// a suggestion request.
|
|
type SuggesterContextQuery interface {
|
|
Source() (interface{}, error)
|
|
}
|
|
|
|
// ContextSuggester is a fast suggester for e.g. type-ahead completion that supports filtering and boosting based on contexts.
|
|
// See https://www.elastic.co/guide/en/elasticsearch/reference/7.0/suggester-context.html
|
|
// for more details.
|
|
type ContextSuggester struct {
|
|
Suggester
|
|
name string
|
|
prefix string
|
|
field string
|
|
size *int
|
|
contextQueries []SuggesterContextQuery
|
|
}
|
|
|
|
// Creates a new context suggester.
|
|
func NewContextSuggester(name string) *ContextSuggester {
|
|
return &ContextSuggester{
|
|
name: name,
|
|
contextQueries: make([]SuggesterContextQuery, 0),
|
|
}
|
|
}
|
|
|
|
func (q *ContextSuggester) Name() string {
|
|
return q.name
|
|
}
|
|
|
|
func (q *ContextSuggester) Prefix(prefix string) *ContextSuggester {
|
|
q.prefix = prefix
|
|
return q
|
|
}
|
|
|
|
func (q *ContextSuggester) Field(field string) *ContextSuggester {
|
|
q.field = field
|
|
return q
|
|
}
|
|
|
|
func (q *ContextSuggester) Size(size int) *ContextSuggester {
|
|
q.size = &size
|
|
return q
|
|
}
|
|
|
|
func (q *ContextSuggester) ContextQuery(query SuggesterContextQuery) *ContextSuggester {
|
|
q.contextQueries = append(q.contextQueries, query)
|
|
return q
|
|
}
|
|
|
|
func (q *ContextSuggester) ContextQueries(queries ...SuggesterContextQuery) *ContextSuggester {
|
|
q.contextQueries = append(q.contextQueries, queries...)
|
|
return q
|
|
}
|
|
|
|
// contextSuggesterRequest is necessary because the order in which
|
|
// the JSON elements are routed to Elasticsearch is relevant.
|
|
// We got into trouble when using plain maps because the text element
|
|
// needs to go before the completion element.
|
|
type contextSuggesterRequest struct {
|
|
Prefix string `json:"prefix"`
|
|
Completion interface{} `json:"completion"`
|
|
}
|
|
|
|
// Creates the source for the context suggester.
|
|
func (q *ContextSuggester) Source(includeName bool) (interface{}, error) {
|
|
cs := &contextSuggesterRequest{}
|
|
|
|
if q.prefix != "" {
|
|
cs.Prefix = q.prefix
|
|
}
|
|
|
|
suggester := make(map[string]interface{})
|
|
cs.Completion = suggester
|
|
|
|
if q.field != "" {
|
|
suggester["field"] = q.field
|
|
}
|
|
if q.size != nil {
|
|
suggester["size"] = *q.size
|
|
}
|
|
switch len(q.contextQueries) {
|
|
case 0:
|
|
case 1:
|
|
src, err := q.contextQueries[0].Source()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
suggester["contexts"] = src
|
|
default:
|
|
ctxq := make(map[string]interface{})
|
|
for _, query := range q.contextQueries {
|
|
src, err := query.Source()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// Merge the dictionary into ctxq
|
|
m, ok := src.(map[string]interface{})
|
|
if !ok {
|
|
return nil, errors.New("elastic: context query is not a map")
|
|
}
|
|
for k, v := range m {
|
|
ctxq[k] = v
|
|
}
|
|
}
|
|
suggester["contexts"] = ctxq
|
|
}
|
|
|
|
if !includeName {
|
|
return cs, nil
|
|
}
|
|
|
|
source := make(map[string]interface{})
|
|
source[q.name] = cs
|
|
return source, nil
|
|
}
|