/// <summary>
/// Loads the model.
/// </summary>
public void LoadModel()
{
Dataservices = DataContextObject.Services;
var providerFactory = new DataproviderFactory(Dataservices);
providerFactory.InitDataProvider();
Feedback = string.Format(@"Press ""{0}"" to begin", ButtonCaption);
Application.Current.DoEvents();
Feedback = String.Empty;
using (var conn = Dataservices.ConnectionFactory())
{
try
{
using (var cmd = conn.CreateCommand())
{
cmd.CommandText = string.Format("select count(*) from [{0}]", Dataservices.Configuration.SelectFrom);
conn.Open();
var temp = (int)cmd.ExecuteScalar();
CurrentProgress = new ProgressState(0, temp); // TODO: based on line count and then perform multi-threading for validating and importing dataset.
}
}
finally
{
conn.Close();
}
}
}
/// <summary>
/// For when yous need to set up some values that can't be directly bound to UI elements.
/// </summary>
public override void BeforeShow()
{
_isLoading = true;
Dataservices = DataContextObject.Services;
var providerFactory = new DataproviderFactory(Dataservices);
providerFactory.InitDataProvider();
var stage = new ImportStageModel(providerFactory);
var temp = stage.SourceFields.Select(fld => new MOriginalField
{
Name = fld.Name,
Values = new ObservableCollection <string>(stage.GetColumnValues(fld.Name, true)),
FieldOrder = fld.Order
}).ToList();
var original = new ObservableCollection <MOriginalField>(temp);
var factory = ServiceLocator.Current.GetInstance <IDomainSessionFactoryProvider>().SessionFactory;
int positionIndex = 0;
using (var session = factory.OpenSession())
{
DataContextObject.TargetElements = session.Query <Element>()
.Where(elem => elem.Owner.Id == DataContextObject.SelectedDataType.Target.Id)
.ToList();
}
var targetFields = DataContextObject.TargetElements
.Where(ElementFilter)
.Select(elem => new MTargetField(elem, original)
{
Position = positionIndex++,
IsRequired = elem.IsRequired
})
.ToList();
//TargetFields = MakeView(targetFields);
DataTypeRequiredFieldCount = MappedFieldsCount = targetFields.Count(f => f.IsRequired);
TargetFields = new ListCollectionView(targetFields);
SourceFields = MakeView(temp);
TotalSourceFields = SourceFields.Count;
//ReconcileTargets();
ReconcileTargets2();
foreach (var f in SourceFields.OfType <MOriginalField>())
{
f.MappingChanged += f_MappingChanged2;
}
FilterText = string.Empty;
ShowEnumeration = new ObservableCollection <string> {
ALL, AUTOMAPPED, MAPPED, UNMAPPED
};
SelectedShow = ShowEnumeration[0];
FieldSortOrder = new ObservableCollection <string> {
ORDER, NAME
};
SelectedSortOrder = FieldSortOrder[0];
TargetFieldModels.ToList().Clear();
var newList = TargetFieldModels.Where(field => !SourceFields.OfType <MOriginalField>()
.ToList()
.Any(f => f.TargetField != null && f.TargetField.Name.EqualsIgnoreCase(field.Name)))
.ToList();
_targetFields = new ListCollectionView(newList);
var requiredFields = TargetFieldModels.Where(f => f.IsRequired).OrderBy(f => f.Name).ToList();
RequiredTargetFields = new ListCollectionView(requiredFields)
{
CustomSort = new MTargetFieldComparer()
};
var optionalFields = TargetFieldModels.Where(f => !f.IsRequired).OrderBy(f => f.Name).ToList();
OptionalTargetFields = new ListCollectionView(optionalFields)
{
CustomSort = new MTargetFieldComparer()
};
_isLoading = false;
}
/// <summary>
/// Perform file operation when loaded
/// </summary>
public void Loaded()
{
Dataservices = DataContextObject.Services;
var providerFactory = new DataproviderFactory(Dataservices);
providerFactory.InitDataProvider();
InitModel();
if (DataContextObject.Histogram != null)
{
return;
}
var worker = new BackgroundWorker();
var sync = new object();
var interimProgress = new ProgressState(0, CurrentProgress.Total);
Action notifyAction = () =>
{
{
lock (sync)
{
CurrentProgress = interimProgress;
Status = string.Format("Progress: {0}", interimProgress.Ratio.ToString("P0"));
}
}
};
var timer = new Timer((state) =>
{
NotifyProgress(this, new ExtendedEventArgs <Action>(notifyAction));
}, null, 1, 1000);
worker.WorkerReportsProgress = true;
worker.WorkerSupportsCancellation = true;
worker.DoWork += (o, e) =>
{
RunWorker(worker, e);
};
worker.ProgressChanged += (o, e) =>
{
var temp = (e.UserState as ProgressState) ?? ProgressState.Empty;
if (temp.Current > interimProgress.Current)
{
lock (sync)
{
interimProgress = temp;
}
}
};
worker.RunWorkerCompleted += (o, e) =>
{
_isValid = !Cancelled;
timer.Dispose();
timer = null;
NotifyProgress(this, new ExtendedEventArgs <Action>(notifyAction));
if (_isValid)
{
Verified(this, EventArgs.Empty);
}
OnPropertyChanged();
// WPF CommandManager periodically calls IsValid to see if the Next/Done button should be enabled.
// In multi-threaded wizard steps, IsValid returns the value of the Done flag. Call InvalidateRequerySuggested here
// on the UI thread after setting the Done flag to force WPF to call IsValid now so the Next/Done button will become enabled.
//Application.Current.DoEvents();
CommandManager.InvalidateRequerySuggested();
};
ServiceLocator.Current.GetInstance <IEventAggregator>()
.GetEvent <WizardCancelEvent>().Subscribe(evnt =>
{
Cancelled = true;
if (worker.CancellationPending)
{
return;
}
worker.CancelAsync();
});
ServiceLocator.Current.GetInstance <IEventAggregator>()
.GetEvent <WizardBackEvent>().Subscribe(evnt =>
{
Cancelled = true;
if (worker.CancellationPending)
{
return;
}
worker.CancelAsync();
});
worker.RunWorkerAsync(new Func <ProgressState>(() => interimProgress));
Thread.Sleep(0);
}