NHibernate.Lob.External.FileSystemCasConnectionProvider.SetPath C# (CSharp) Method

		private void SetPath(string storagePath)
		{
			if (storagePath == null) throw new NullReferenceException("Storage path cannot be null. Must be existing path.");
			if (!System.IO.Path.IsPathRooted(storagePath))
			{
				if (storagePath.StartsWith("~/"))
				{
					System.Web.HttpContext context = System.Web.HttpContext.Current;
					if (context != null)
						storagePath = context.Request.MapPath(storagePath);
					else if (System.Web.Hosting.HostingEnvironment.IsHosted)
						storagePath = System.Web.Hosting.HostingEnvironment.MapPath(storagePath);
				}
				else
					storagePath = Path.GetFullPath(storagePath);
			}
			if (!System.IO.Directory.Exists(storagePath)) throw new Exception("Storage path does not exist. The root of the path must exist before it can be used for storage.");
			_path = storagePath;
		}