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.
125 lines
2.1 KiB
125 lines
2.1 KiB
package query
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"go.mongodb.org/mongo-driver/bson"
|
|
"go.mongodb.org/mongo-driver/bson/primitive"
|
|
|
|
"github.com/mainnika/mongox-go-driver/v2/mongox/base/protection"
|
|
"github.com/mainnika/mongox-go-driver/v2/mongox/utils"
|
|
)
|
|
|
|
// Compose is a function to compose filters into a single query
|
|
func Compose(filters ...interface{}) *Query {
|
|
|
|
q := &Query{}
|
|
|
|
for _, f := range filters {
|
|
if !Push(q, f) {
|
|
panic(fmt.Errorf("unknown filter %v", f))
|
|
}
|
|
}
|
|
|
|
return q
|
|
}
|
|
|
|
// Push applies single filter to a query
|
|
func Push(q *Query, f interface{}) bool {
|
|
|
|
if utils.IsNil(f) {
|
|
return true
|
|
}
|
|
|
|
ok := false
|
|
ok = ok || applyBson(q, f)
|
|
ok = ok || applyLimit(q, f)
|
|
ok = ok || applySort(q, f)
|
|
ok = ok || applySkip(q, f)
|
|
ok = ok || applyProtection(q, f)
|
|
ok = ok || applyPreloader(q, f)
|
|
|
|
return ok
|
|
}
|
|
|
|
// applyBson is a fallback for a custom bson.M
|
|
func applyBson(q *Query, f interface{}) bool {
|
|
|
|
if f, ok := f.(bson.M); ok {
|
|
q.And(f)
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// applyLimits extends query with a limiter
|
|
func applyLimit(q *Query, f interface{}) bool {
|
|
|
|
if f, ok := f.(Limiter); ok {
|
|
q.limiter = f
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// applySort extends query with a sort rule
|
|
func applySort(q *Query, f interface{}) bool {
|
|
|
|
if f, ok := f.(Sorter); ok {
|
|
q.sorter = f
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// applySkip extends query with a skip number
|
|
func applySkip(q *Query, f interface{}) bool {
|
|
|
|
if f, ok := f.(Skipper); ok {
|
|
q.skipper = f
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func applyProtection(q *Query, f interface{}) bool {
|
|
|
|
var x *primitive.ObjectID
|
|
var v *int64
|
|
|
|
switch f := f.(type) {
|
|
case protection.Key:
|
|
x = &f.X
|
|
v = &f.V
|
|
case *protection.Key:
|
|
x = &f.X
|
|
v = &f.V
|
|
|
|
default:
|
|
return false
|
|
}
|
|
|
|
if x.IsZero() {
|
|
q.And(primitive.M{"_x": primitive.M{"$exists": false}})
|
|
q.And(primitive.M{"_v": primitive.M{"$exists": false}})
|
|
} else {
|
|
q.And(primitive.M{"_x": *x})
|
|
q.And(primitive.M{"_v": *v})
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func applyPreloader(q *Query, f interface{}) bool {
|
|
|
|
if f, ok := f.(Preloader); ok {
|
|
q.preloader = f
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|