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// Copyright 2012-2015 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 (
"encoding/json"
"fmt"
"net/url"
)
type MultiGetService struct {
client *Client
preference string
realtime *bool
refresh *bool
items []*MultiGetItem
}
func NewMultiGetService(client *Client) *MultiGetService {
builder := &MultiGetService{
client: client,
items: make([]*MultiGetItem, 0),
}
return builder
}
func (b *MultiGetService) Preference(preference string) *MultiGetService {
b.preference = preference
return b
}
func (b *MultiGetService) Refresh(refresh bool) *MultiGetService {
b.refresh = &refresh
return b
}
func (b *MultiGetService) Realtime(realtime bool) *MultiGetService {
b.realtime = &realtime
return b
}
func (b *MultiGetService) Add(items ...*MultiGetItem) *MultiGetService {
b.items = append(b.items, items...)
return b
}
func (b *MultiGetService) Source() interface{} {
source := make(map[string]interface{})
items := make([]interface{}, len(b.items))
for i, item := range b.items {
items[i] = item.Source()
}
source["docs"] = items
return source
}
func (b *MultiGetService) Do() (*MultiGetResult, error) {
// Build url
path := "/_mget"
params := make(url.Values)
if b.realtime != nil {
params.Add("realtime", fmt.Sprintf("%v", *b.realtime))
}
if b.preference != "" {
params.Add("preference", b.preference)
}
if b.refresh != nil {
params.Add("refresh", fmt.Sprintf("%v", *b.refresh))
}
// Set body
body := b.Source()
// Get response
res, err := b.client.PerformRequest("GET", path, params, body)
if err != nil {
return nil, err
}
// Return result
ret := new(MultiGetResult)
if err := json.Unmarshal(res.Body, ret); err != nil {
return nil, err
}
return ret, nil
}
// -- Multi Get Item --
// MultiGetItem is a single document to retrieve via the MultiGetService.
type MultiGetItem struct {
index string
typ string
id string
routing string
fields []string
version *int64 // see org.elasticsearch.common.lucene.uid.Versions
versionType string // see org.elasticsearch.index.VersionType
fsc *FetchSourceContext
}
func NewMultiGetItem() *MultiGetItem {
return &MultiGetItem{}
}
func (item *MultiGetItem) Index(index string) *MultiGetItem {
item.index = index
return item
}
func (item *MultiGetItem) Type(typ string) *MultiGetItem {
item.typ = typ
return item
}
func (item *MultiGetItem) Id(id string) *MultiGetItem {
item.id = id
return item
}
func (item *MultiGetItem) Routing(routing string) *MultiGetItem {
item.routing = routing
return item
}
func (item *MultiGetItem) Fields(fields ...string) *MultiGetItem {
if item.fields == nil {
item.fields = make([]string, 0)
}
item.fields = append(item.fields, fields...)
return item
}
// Version can be MatchAny (-3), MatchAnyPre120 (0), NotFound (-1),
// or NotSet (-2). These are specified in org.elasticsearch.common.lucene.uid.Versions.
// The default in Elasticsearch is MatchAny (-3).
func (item *MultiGetItem) Version(version int64) *MultiGetItem {
item.version = &version
return item
}
// VersionType can be "internal", "external", "external_gt", "external_gte",
// or "force". See org.elasticsearch.index.VersionType in Elasticsearch source.
// It is "internal" by default.
func (item *MultiGetItem) VersionType(versionType string) *MultiGetItem {
item.versionType = versionType
return item
}
func (item *MultiGetItem) FetchSource(fetchSourceContext *FetchSourceContext) *MultiGetItem {
item.fsc = fetchSourceContext
return item
}
// Source returns the serialized JSON to be sent to Elasticsearch as
// part of a MultiGet search.
func (item *MultiGetItem) Source() interface{} {
source := make(map[string]interface{})
source["_id"] = item.id
if item.index != "" {
source["_index"] = item.index
}
if item.typ != "" {
source["_type"] = item.typ
}
if item.fsc != nil {
source["_source"] = item.fsc.Source()
}
if item.fields != nil {
source["fields"] = item.fields
}
if item.routing != "" {
source["_routing"] = item.routing
}
if item.version != nil {
source["version"] = fmt.Sprintf("%d", *item.version)
}
if item.versionType != "" {
source["version_type"] = item.versionType
}
return source
}
// -- Result of a Multi Get request.
type MultiGetResult struct {
Docs []*GetResult `json:"docs,omitempty"`
}
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