Define Your Data Model. Get Everything Else for Free.

namespace Tuto {f529bc42-...} {

concept User;

struct Login {
    string nickname;
    string password;
};

struct Identity {
    string firstname;
    string lastname;
};

attachment<User, Login> login;
attachment<User, Identity> identity;

};

from dsviper import *

# Open database and inject constants
db = CommitDatabase.open("model.cdb")
db.definitions().inject()

# Create key and document
key = TUTO_A_USER_LOGIN.create_key()
login = TUTO_A_USER_LOGIN.create_document()
login.nickname = "zoop"
login.password = "robust"

# Commit to database (versioned)
state = CommitMutableState(db.initial_state())
state.attachment_mutating().set(TUTO_A_USER_LOGIN, key, login)
db.commit_mutations("Add user", state)