/// <summary>
/// Gets Images for an event asynchronously.
/// </summary>
/// <param name="eventID">Identifier of the event which will have it's images retrieved.</param>
/// <returns>
/// List of Images for an event.
/// </returns>
public async Task <IEnumerable <IImage> > GetImagesAsync(Guid eventID)
{
log4net.GlobalContext.Properties["AppName"] = Assembly.GetExecutingAssembly().FullName;
try
{
List <IImage> selectImages = new List <IImage>();
using (var connection = Connection.CreateConnection())
using (NpgsqlCommand command = new NpgsqlCommand(ImageQueryHelper.GetSelectImagesQueryString(), connection))
{
command.Parameters.AddWithValue(QueryConstants.ParEventId, NpgsqlDbType.Uuid, eventID);
await connection.OpenAsync();
DbDataReader dr = await command.ExecuteReaderAsync();
while (dr.Read())
{
ImageEntity tmp = new ImageEntity
{
Id = new Guid(dr[0].ToString()),
EventId = eventID
};
tmp.Content = (byte[])dr["Content"];
selectImages.Add(Mapper.Map <IImage>(tmp));
}
}
return(Mapper.Map <IEnumerable <IImage> >(selectImages));
}
catch (Exception ex)
{
_log.Error(ex.StackTrace, ex);
throw new Exception(ex.StackTrace);
}
}
/// <summary>
/// Creates an image for an event asynchronously.
/// </summary>
/// <param name="img">Image that will be created</param>
/// <returns>
/// Returns the Created image
/// </returns>
public async Task <IImage> CreateImageAsync(IImage img)
{
log4net.GlobalContext.Properties["AppName"] = Assembly.GetExecutingAssembly().FullName;
try
{
ImageEntity DbImage = Mapper.Map <ImageEntity>(img);
ImageEntity selectImage = null;
using (var connection = Connection.CreateConnection())
using (NpgsqlCommand commandSelect = new NpgsqlCommand(ImageQueryHelper.GetSelectImageQueryString(), connection))
using (NpgsqlCommand commandInsert = new NpgsqlCommand(ImageQueryHelper.GetInsertImagesQueryString(), connection))
{
commandInsert.Parameters.AddWithValue(QueryConstants.ParId, NpgsqlDbType.Uuid, DbImage.Id);
commandInsert.Parameters.AddWithValue(QueryConstants.ParContent, NpgsqlDbType.Bytea, DbImage.Content);
commandInsert.Parameters.AddWithValue(QueryConstants.ParEventId, NpgsqlDbType.Uuid, DbImage.EventId);
await connection.OpenAsync();
await commandInsert.ExecuteNonQueryAsync();
commandSelect.Parameters.AddWithValue(QueryConstants.ParId, NpgsqlDbType.Uuid, DbImage.Id);
DbDataReader dr = await commandSelect.ExecuteReaderAsync();
while (dr.Read())
{
selectImage = new ImageEntity
{
Id = new Guid(dr[0].ToString()),
EventId = DbImage.EventId
};
selectImage.Content = (byte[])dr["Content"];
}
}
return(Mapper.Map <IImage>(selectImage));
}
catch (Exception ex)
{
_log.Error(ex.StackTrace, ex);
throw new Exception(ex.StackTrace);
}
}
