/// <summary>
/// Fetches an object by providing and id.
/// </summary>
/// <typeparam name="T">The object type being retrieved.</typeparam>
/// <param name="id">The id of the resource to retrieve.</param>
/// <exception cref="RestClientException">
/// Any Exception from the controller is logged and thrown as RestClientException with InnerException being the caught Exception.
/// A RestClientException is also thrown when the controller could not be found supporting type T.
/// </exception>
/// <returns>An object of the type of resource that was requested.</returns>
public T Get <T>(string id) where T : HalJsonResource
{
this.EnsureAuthenticated();
IRestQueryController controller = this.GetControllerByType(typeof(T));
if (controller == null)
{
string err = string.Format(ControllerNotFoundForTypeException, typeof(T));
this.log.Error(err, null);
throw new RestClientException(err);
}
try
{
return(controller.Get <T>(id));
}
catch (Exception ex)
{
this.log.Error(ControllerExceptionText, ex);
if (ex is RestClientException)
{
throw;
}
throw new RestClientException(ControllerExceptionText, ex);
}
}
/// <summary>
/// Fetches a list of objects by a given link (url).
/// </summary>
/// <typeparam name="T">The type that is expected to be found at the url.</typeparam>
/// <param name="url">The url to the specific resource to get.</param>
/// <exception cref="RestClientException">
/// Any Exception from the controller is logged and thrown as RestClientException with InnerException being the caught Exception.
/// A RestClientException is also thrown when the controller could not be found supporting type T.
/// </exception>
/// <returns>A list of elements of the specified type.</returns>
public IList <T> GetByLink <T>(string url) where T : HalJsonResource
{
this.EnsureAuthenticated();
IRestQueryController controller = this.GetControllerByUrl(url);
if (controller == null)
{
string err = string.Format(ControllerNotFoundForUrl, url);
this.log.Error(err, null);
throw new RestClientException(err);
}
try
{
return(controller.GetByLink <T>(url));
}
catch (Exception ex)
{
this.log.Error(ControllerExceptionText, ex);
if (ex is RestClientException)
{
throw;
}
throw new RestClientException(ControllerExceptionText, ex);
}
}
/// <summary>
/// Fetches the controller which supports Type t, meaning the controller which is registered with [RestQueryController(SupportedType = t)]
/// </summary>
/// <param name="t">The type matching SupportedType</param>
/// <returns>The found query controller or null if not found</returns>
private IRestQueryController GetControllerByType(Type t)
{
IRestQueryController controller = null;
foreach (RestQueryControllerAttribute item in this.controllers)
{
if (item.SupportedType == t)
{
controller = (IRestQueryController)Activator.CreateInstance(item.ControllerType);
controller.Context = this.GetControllerContext(item);
break;
}
}
return(controller);
}
/// <summary>
/// Fetches the controller by its URL and object type. The url controller part contains the name.
/// The controller part is the first word after the base address.
/// It takes into account that the url may contain the base address.
/// </summary>
/// <param name="url">Either a full address including base address or a url part starting with controller name.</param>
/// <returns>The controller, initiated with context</returns>
private IRestQueryController GetControllerByUrl(string url)
{
IRestQueryController controller = null;
string u = url;
if (u.StartsWith(this.restQueryConfig.BaseAddress, StringComparison.InvariantCultureIgnoreCase))
{
u = u.Substring(this.restQueryConfig.BaseAddress.Length);
}
// It should start with controller name, but if it wrongly starts with / that / is removed
if (u.StartsWith("/") && u.Length > 1)
{
u = u.Substring(1);
}
string name = u;
int index = u.IndexOfAny(new[] { '/', '?', '$' });
if (index > 0)
{
name = u.Substring(0, index);
}
foreach (RestQueryControllerAttribute item in this.controllers)
{
if (!item.Name.Equals(name, StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
controller = (IRestQueryController)Activator.CreateInstance(item.ControllerType);
controller.Context = this.GetControllerContext(item);
break;
}
return(controller);
}
