You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
133 lines
2.3 KiB
133 lines
2.3 KiB
package query
|
|
|
|
import (
|
|
"github.com/modern-go/reflect2"
|
|
"github.com/valyala/bytebufferpool"
|
|
"go.mongodb.org/mongo-driver/bson"
|
|
"go.mongodb.org/mongo-driver/bson/primitive"
|
|
)
|
|
|
|
// Query is an enchanched primitive.M map
|
|
type Query struct {
|
|
m primitive.M
|
|
limiter Limiter
|
|
sorter Sorter
|
|
skipper Skipper
|
|
preloader Preloader
|
|
updater Updater
|
|
ondecode Callbacks
|
|
onclose Callbacks
|
|
}
|
|
|
|
// And function pushes the elem query to the $and array of the query
|
|
func (q *Query) And(elem primitive.M) (query *Query) {
|
|
|
|
if q.m == nil {
|
|
q.m = primitive.M{}
|
|
}
|
|
|
|
queries, exists := q.m["$and"].(primitive.A)
|
|
|
|
if !exists {
|
|
q.m["$and"] = primitive.A{elem}
|
|
return q
|
|
}
|
|
|
|
q.m["$and"] = append(queries, elem)
|
|
|
|
return q
|
|
}
|
|
|
|
// Limiter returns limiter value or nil
|
|
func (q *Query) Limiter() (limit *int64) {
|
|
|
|
if q.limiter == nil {
|
|
return
|
|
}
|
|
|
|
return q.limiter.Limit()
|
|
}
|
|
|
|
// Sorter is a sort rule for a query
|
|
func (q *Query) Sorter() (sort interface{}) {
|
|
|
|
if q.sorter == nil {
|
|
return
|
|
}
|
|
|
|
return q.sorter.Sort()
|
|
}
|
|
|
|
// Skipper is a skipper for a query
|
|
func (q *Query) Skipper() (skip *int64) {
|
|
|
|
if q.skipper == nil {
|
|
return
|
|
}
|
|
|
|
return q.skipper.Skip()
|
|
}
|
|
|
|
// Updater is an update command for a query
|
|
func (q *Query) Updater() (update primitive.M, err error) {
|
|
|
|
if q.updater == nil {
|
|
update = primitive.M{}
|
|
return
|
|
}
|
|
|
|
update = q.updater.Update()
|
|
|
|
if reflect2.IsNil(update) {
|
|
update = primitive.M{}
|
|
return
|
|
}
|
|
|
|
buffer := bytebufferpool.Get()
|
|
defer bytebufferpool.Put(buffer)
|
|
|
|
// convert update document to bson map values
|
|
bsonBytes, err := bson.MarshalAppend(buffer.B, update)
|
|
if err != nil {
|
|
return
|
|
}
|
|
update = primitive.M{}
|
|
err = bson.Unmarshal(bsonBytes, update)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// Preloader is a preloader list for a query
|
|
func (q *Query) Preloader() (preloads []string, ok bool) {
|
|
|
|
if q.preloader == nil {
|
|
return nil, false
|
|
}
|
|
|
|
preloads = q.preloader.Preload()
|
|
ok = len(preloads) > 0
|
|
|
|
return
|
|
}
|
|
|
|
// OnDecode callback is called after the mongo decode function
|
|
func (q *Query) OnDecode() (callbacks Callbacks) {
|
|
return q.ondecode
|
|
}
|
|
|
|
func (q *Query) OnClose() (callbacks Callbacks) {
|
|
return q.onclose
|
|
}
|
|
|
|
// Empty checks the query for any content
|
|
func (q *Query) Empty() (isEmpty bool) {
|
|
return len(q.m) == 0
|
|
}
|
|
|
|
// M returns underlying query map
|
|
func (q *Query) M() (m primitive.M) {
|
|
return q.m
|
|
}
|
|
|