public WcfResponse Fetch(FetchRequest request)
{
Csla.Server.DataPortal portal = new Csla.Server.DataPortal();
object result;
try
{
result = portal.Fetch(request.ObjectType, request.Criteria, request.Context, true).Result;
}
catch (Exception ex)
{
result = ex;
}
return new WcfResponse(result);
}
/// <summary>
/// Called by <see cref="DataPortal" /> to load an
/// existing business object.
/// </summary>
/// <param name="objectType">Type of business object to create.</param>
/// <param name="criteria">Criteria object describing business object.</param>
/// <param name="context">
/// <see cref="Server.DataPortalContext" /> object passed to the server.
/// </param>
/// <param name="isSync">True if the client-side proxy should synchronously invoke the server.</param>
#pragma warning disable 1998
public async Task<DataPortalResult> Fetch(Type objectType, object criteria, DataPortalContext context, bool isSync)
#pragma warning restore 1998
{
#if !(ANDROID || IOS) && !NETFX_CORE
ChannelFactory<IWcfPortal> cf = GetChannelFactory();
var proxy = GetProxy(cf);
WcfResponse response = null;
#if NET40
try
{
var request = new FetchRequest(objectType, criteria, context);
if (isSync)
{
response = proxy.Fetch(request);
}
else
{
var worker = new Csla.Threading.BackgroundWorker();
var tcs = new TaskCompletionSource<WcfResponse>();
worker.RunWorkerCompleted += (o, e) =>
{
tcs.SetResult((WcfResponse)e.Result);
};
worker.DoWork += (o, e) =>
{
e.Result = proxy.Fetch(request);
};
worker.RunWorkerAsync();
response = await tcs.Task;
}
if (cf != null)
cf.Close();
object result = response.Result;
if (result is Exception)
throw (Exception)result;
return (DataPortalResult)result;
}
catch
{
cf.Abort();
throw;
}
#else
try
{
var request = new FetchRequest(objectType, criteria, context);
if (isSync)
response = proxy.Fetch(request);
else
response = await proxy.FetchAsync(request);
if (cf != null)
cf.Close();
}
catch
{
cf.Abort();
throw;
}
object result = response.Result;
if (result is Exception)
throw (Exception)result;
return (DataPortalResult)result;
#endif
#else // WinRT and Silverlight
var request = GetBaseCriteriaRequest();
request.TypeName = objectType.AssemblyQualifiedName;
if (!(criteria is IMobileObject))
{
criteria = new PrimitiveCriteria(criteria);
}
request.CriteriaData = MobileFormatter.Serialize(criteria);
request = ConvertRequest(request);
var proxy = GetProxy();
DataPortalResult result = null;
#if !NETFX_CORE && !(IOS || ANDROID)
var tcs = new TaskCompletionSource<DataPortalResult>();
proxy.FetchCompleted += (s, e) =>
{
try
{
Csla.WcfPortal.WcfResponse response = null;
if (e.Error == null)
response = ConvertResponse(e.Result);
ContextDictionary globalContext = null;
if (response != null)
globalContext = (ContextDictionary)MobileFormatter.Deserialize(response.GlobalContext);
if (e.Error == null && response != null && response.ErrorData == null)
{
var obj = MobileFormatter.Deserialize(response.ObjectData);
result = new DataPortalResult(obj, null, globalContext);
}
else if (response != null && response.ErrorData != null)
{
var ex = new DataPortalException(response.ErrorData);
result = new DataPortalResult(null, ex, globalContext);
}
else
{
result = new DataPortalResult(null, e.Error, globalContext);
}
}
catch (Exception ex)
{
result = new DataPortalResult(null, ex, null);
}
finally
{
tcs.SetResult(result);
}
};
proxy.FetchAsync(request);
var finalresult = await tcs.Task;
if (finalresult.Error != null)
throw finalresult.Error;
return finalresult;
#else // WinRT
try
{
var response = await proxy.FetchAsync(request);
response = ConvertResponse(response);
if (response == null)
throw new DataPortalException("null response", null);
var globalContext = (ContextDictionary)MobileFormatter.Deserialize(response.GlobalContext);
if (response.ErrorData == null)
{
var obj = MobileFormatter.Deserialize(response.ObjectData);
result = new DataPortalResult(obj, null, globalContext);
}
else
{
var ex = new DataPortalException(response.ErrorData);
result = new DataPortalResult(null, ex, globalContext);
}
}
catch (Exception ex)
{
result = new DataPortalResult(null, ex, null);
}
if (result.Error != null)
throw result.Error;
return result;
#endif
#endif
}
