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mongox-go-driver/mongox/database/count.go

37 lines
880 B

package database
import (
"go.mongodb.org/mongo-driver/mongo/options"
"github.com/mainnika/mongox-go-driver/v2/mongox/query"
)
// Count function counts documents in the database by query
// target is used only to get collection by tag so it'd be better to use nil ptr here
func (d *Database) Count(target interface{}, filters ...interface{}) (result int64, err error) {
composed, err := query.Compose(filters...)
if err != nil {
return -1, err
}
collection, err := d.GetCollectionOf(target)
if err != nil {
return -1, err
}
ctx := query.WithContext(d.Context(), composed)
m := composed.M()
opts := options.Count()
opts.Limit = composed.Limiter()
opts.Skip = composed.Skipper()
defer func() { _ = composed.OnClose().Invoke(ctx, target) }()
result, err = collection.CountDocuments(ctx, m, opts)
if err != nil {
return -1, err
}
return result, nil
}