public void Log(UpgradeInfo upgradeInfo)
        {
            Application application = this.applicationRepository.Find(upgradeInfo.ApplicationId);

            if (application != null)
            {
                DeviceInfo device = this.deviceRepository.Find(upgradeInfo.DeviceId);

                if (device != null)
                {
                    DeviceUpgradeSummary deviceUpgradeSum =
                        new DeviceUpgradeSummary(upgradeInfo.Version, DateTime.Today, upgradeInfo.ApplicationId, device.PlatformType);

                    this.deviceRepository.Save(deviceUpgradeSum);
                }
                else
                {
                    throw new NoDeviceException(upgradeInfo.DeviceId);
                }
            }
            else
            {
                throw new InactiveApplicationException(upgradeInfo.ApplicationId);
            }
        }