/// <summary>
/// Get the details of a subscription for a device.
/// </summary>
/// <param name="deviceId">The device id of the device being searched.</param>
/// <param name="subscription">The subscription for which we want details.</param>
/// <returns>Returns the details of the device subscription.</returns>
public SubscriptionDataModel SelectByDeviceIdAndSubscription(string deviceId, string subscription)
{
try
{
SubscriptionDataModel sdm = this.serviceContext.SubscriptionsTable.Where(s => (s.Subscription == subscription && s.DeviceId == deviceId)).FirstOrDefault();
return(sdm);
}
catch (DataServiceQueryException)
{
return(null);
}
}
/// <summary>
/// Signup the device to the subscription.
/// </summary>
/// <param name="deviceId">The device id of the device being added.</param>
/// <param name="subscription">Name of the subscription being signed up.</param>
/// <returns>Returns success if the signup is successful. Error otherwise.</returns>
public PushMessageError AddSubscription(string deviceId, string subscription)
{
PushMessageError err = this.Validate(deviceId, subscription);
if (err != PushMessageError.Success)
{
return err;
}
SubscriptionDataModel sdm = this.sds.SelectByDeviceIdAndSubscription(deviceId, subscription);
if (sdm == null)
{
sdm = new SubscriptionDataModel(subscription, deviceId);
this.sds.Insert(sdm);
}
return PushMessageError.Success;
}
/// <summary>
/// Update Just for completeness.
/// </summary>
/// This is not implemented.
/// <param name="updatedItem">The subscription record to be deleted.</param>
public static void Update(SubscriptionDataModel updatedItem)
{
// we do not update subscriptions. You create or delete
throw new NotImplementedException();
}
/// <summary>
/// Used to unsubscribe from a subscription.
/// </summary>
/// <param name="item">The subscription record to be deleted.</param>
public void Delete(SubscriptionDataModel item)
{
this.serviceContext.DeleteObject(item);
this.serviceContext.SaveChanges();
}
/// <summary>
/// Add a subscription to the table. Used when a device subscribes to a subscription
/// </summary>
/// <param name="newItem">The new subscription record being added.</param>
public void Insert(SubscriptionDataModel newItem)
{
this.serviceContext.AddObject(MessageServiceContext.SubscriptionsTableName, newItem);
this.serviceContext.SaveChanges();
}
/// <summary>
/// Update Just for completeness.
/// </summary>
/// This is not implemented.
/// <param name="updatedItem">The subscription record to be deleted.</param>
public static void Update(SubscriptionDataModel updatedItem)
{
// we do not update subscriptions. You create or delete
throw new NotImplementedException();
}
/// <summary>
/// Used to unsubscribe from a subscription.
/// </summary>
/// <param name="item">The subscription record to be deleted.</param>
public void Delete(SubscriptionDataModel item)
{
this.serviceContext.DeleteObject(item);
this.serviceContext.SaveChanges();
}
/// <summary>
/// Add a subscription to the table. Used when a device subscribes to a subscription
/// </summary>
/// <param name="newItem">The new subscription record being added.</param>
public void Insert(SubscriptionDataModel newItem)
{
this.serviceContext.AddObject(MessageServiceContext.SubscriptionsTableName, newItem);
this.serviceContext.SaveChanges();
}
