// Do implements plan.Plan Do interface.
func (r *selectIndexDefaultPlan) Do(ctx context.Context, f plan.RowIterFunc) (err error) {
var x kv.Index
switch ix := r.x.(type) {
case *column.IndexedCol:
x = ix.X
default:
panic("should never happen")
}
txn, err := ctx.GetTxn(false)
if err != nil {
return err
}
en, err := x.SeekFirst(txn)
if err != nil {
return types.EOFAsNil(err)
}
defer en.Close()
var id int64
for {
k, _, err := en.Next()
if err != nil {
return types.EOFAsNil(err)
}
id++
if more, err := f(id, k); !more || err != nil {
return err
}
}
}
