func insert(store *stores.UserStore, users []*models.User) {
printNames("Inserting: ", users...)
for _, user := range users {
// errors ignored for idempotence
store.Insert(user).Execute()
}
}
func selectAll(store *stores.UserStore) {
all, err := store.SelectAll().Execute()
if err != nil {
log.Fatal(err)
}
printNames("All Users: ", all...)
}
func delete(store *stores.UserStore, user *models.User) {
printNames("Deleting: ", user)
existed, err := store.Delete(user.ID).Execute()
if err != nil {
log.Fatal(err)
}
if !existed {
log.Fatal("User did not exist")
}
}
func selectAllWhere(store *stores.UserStore) {
query := store.SelectAll().Where(func(u *models.User) bool {
return u.Age >= 18
})
adults, err := query.Execute()
if err != nil {
log.Fatal(err)
}
printNames("Adults: ", adults...)
}
func firstOrNil(store *stores.UserStore) {
query := store.SelectAll().Where(func(u *models.User) bool {
return u.Name == "Jane"
}).FirstOrNil()
jane, err := query.Execute()
if err != nil {
log.Fatal(err)
}
if jane == nil {
log.Fatal("Could not find anyone named 'Jane'")
}
fmt.Printf("Jane is %d years old\n", jane.Age)
}