saveSession method
Implementation
@override
Future<void> saveSession(Session session, String sessionId) async {
final dataString = json.encode(session.data, toEncodable: Session.toEncodable);
if (await sessionExist(sessionId)) {
await sqlExecute("UPDATE $tableName SET expires=${session.expires.microsecondsSinceEpoch}, "
"data='$dataString' WHERE id='$sessionId';");
} else {
await sqlExecute("INSERT INTO $tableName (id, expires, data) "
"VALUES ('$sessionId', ${session.expires.microsecondsSinceEpoch}, '$dataString');");
}
}