public static T GetStateObject <T>(BotStateContext context, Func <T> fnDefault) where T : class
{
T result = null;
var procedureName = "GetStateObject";
var dbOperation = new Action <SqlCommand>(command =>
{
// Do Something
AddStateParameters(command, context);
var r = command.ExecuteReader();
var builders = GetJSONResultsFromReader(r);
string data = builders[0].ToString();
if (data != "[]")
{
result = JsonConvert.DeserializeObject <T>(
data);
}
if (result == null)
{
result = fnDefault();
}
});
ExecuteSQLStoredProc(procedureName, dbOperation, ConnectionContext.State);
return(result);
}
public static async Task PersistInStateAsync <T, U>(IServiceProvider serviceProvider, ITurnContext context, U value, bool useDbHelper = false)
where T : BotState
where U : class
{
var target = typeof(U);
if (!useDbHelper)
{
var sp = serviceProvider.GetService <T>();
var accessor = sp.CreateProperty <U>(target.Name);
await accessor.SetAsync(context, value);
await sp.SaveChangesAsync(context, true);
}
else
{
bool isUserState = (typeof(T) == typeof(UserState));
var bsc = new BotStateContext
{
Category = isUserState
? BotStorageCategory.User : BotStorageCategory.Conversation,
ContextId = isUserState
? context.Activity.From.Id : context.Activity.Conversation.Id,
PropertyName = target.Name
};
DBHelper.SaveStateObject(bsc, value);
}
}
public static async Task <U> RetrieveFromStateAsync <T, U>(IServiceProvider serviceProvider, ITurnContext context, bool useDbHelper = false)
where T : BotState
where U : class, new()
{
U value = default(U);
var target = typeof(U);
Func <U> fnDefault = () =>
{
System.Diagnostics.Debug.WriteLine(context.Activity.From.Id);
return(new U());
};
if (!useDbHelper)
{
var sp = serviceProvider.GetService <T>();
var accessor = sp.CreateProperty <U>(target.Name);
value = await accessor.GetAsync(context, fnDefault);
}
else
{
bool isUserState = (typeof(T) == typeof(UserState));
var bsc = new BotStateContext
{
Category = isUserState
? BotStorageCategory.User : BotStorageCategory.Conversation,
ContextId = isUserState
? context.Activity.From.Id : context.Activity.Conversation.Id,
PropertyName = target.Name
};
value = DBHelper.GetStateObject(bsc, fnDefault);
}
return(value);
}
public static void RemoveStateObject <T>(BotStateContext context) where T : class
{
var procedureName = "DeleteStateObject";
var dbOperation = new Action <SqlCommand>(command =>
{
// Do Something
AddStateParameters(command, context);
command.ExecuteNonQuery();
});
ExecuteSQLStoredProc(procedureName, dbOperation, ConnectionContext.State);
}
public static void SaveStateObject <T>(BotStateContext context, T value) where T : class
{
var procedureName = "PersistStateObject";
var dbOperation = new Action <SqlCommand>(command =>
{
// Do Something
AddStateParameters(command, context);
command.Parameters.Add("@state", SqlDbType.NVarChar);
command.Parameters["@state"].Value = JsonConvert.SerializeObject(value);
command.ExecuteNonQuery();
});
ExecuteSQLStoredProc(procedureName, dbOperation, ConnectionContext.State);
}
private static void AddStateParameters(SqlCommand command, BotStateContext context)
{
AddStateParameters(command, context.ContextId, context.Category, context.PropertyName);
}