jldb/mdb/db-userdata_test.go

package mdb

import (
	"cmp"
	"strings"
)

type UserDataItem struct {
	ID     uint64
	UserID uint64
	Name   string
	Data   string
}

type UserData struct {
	*Collection[UserDataItem]
	ByName *Index[UserDataItem] // Unique index on (Token).
}

func NewUserDataCollection(db *Database) UserData {
	userData := UserData{}

	userData.Collection = NewCollection[UserDataItem](db, "UserData", nil)

	userData.ByName = NewUniqueIndex(
		userData.Collection,
		"ByName",
		func(lhs, rhs *UserDataItem) int {
			if x := cmp.Compare(lhs.UserID, rhs.UserID); x != 0 {
				return x
			}
			return strings.Compare(lhs.Name, rhs.Name)
		})

	return userData
}