/// <summary>
/// Establishes the connection and initializes internal structures
/// </summary>
/// <param name="arg">Settings for the connection, model etc</param>
/// <param name="policy">Policy for this datamanager</param>
public DataManagerWithPolicy(ConnectionParameters arg, ExecutionPolicy policy)
{
Contract.Requires(!string.IsNullOrEmpty(arg.connection));
Contract.Requires(!string.IsNullOrEmpty(arg.modelResource));
KConnectionParameters = arg;
KPolicy = policy;
_creator = new CreationStrategy(KConnectionParameters, KPolicy);
switch (KPolicy.PeriodicDisposalStrategy)
{
case Strategy.DisposeWithThread:
_cleaner = new RemoveOnlyWhenThreadIsDead(_map, KPolicy);
break;
case Strategy.DisposeWhenNotInUse:
_cleaner = new RemoveUnused(_map, KPolicy);
break;
case Strategy.DisposeLeastRecentlyUsed:
_cleaner = new RemoveLeastRecentlyUsed(_map, KPolicy);
break;
default:
this._cleaner = new CleaningStrategy(_map, KPolicy);
break;
}
_cleaner.Start();
}
public void CreateView <TView, TViewModel>(
ref dynamic view,
ref TViewModel viewModel,
CreationStrategy viewCreationStrategy = CreationStrategy.Activate,
CreationStrategy viewModelCreationStrategy = CreationStrategy.Resolve)
{
CreateComponent <TView>(ref view, viewCreationStrategy);
CreateComponent <TViewModel>(ref viewModel, viewModelCreationStrategy);
view.DataContext = viewModel;
Attach(view);
}
private void CreateComponent(Type componentType, ref object component, CreationStrategy creationStrategy)
{
switch (creationStrategy)
{
case CreationStrategy.Activate: component = Activator.CreateInstance(componentType); break;
case CreationStrategy.Resolve: component = _exportProvider.GetExportedValue <object>(componentType.FullName); break;
case CreationStrategy.Inject: if (component == null)
{
throw new ArgumentNullException("component");
}
break;
default: throw new NotSupportedException();
}
}
private void CreateComponent <T>(ref dynamic component, CreationStrategy creationStrategy)
{
switch (creationStrategy)
{
case CreationStrategy.Activate: component = Activator.CreateInstance <T>(); break;
case CreationStrategy.Resolve: component = _exportProvider.GetExportedValue <T>(); break;
case CreationStrategy.Inject: if (component == null)
{
throw new ArgumentNullException("component");
}
break;
default: throw new NotSupportedException();
}
}
public void CreateView(
Type viewType,
ref FrameworkElement view,
Type viewModelType,
ref object viewModel,
CreationStrategy viewCreationStrategy = CreationStrategy.Activate,
CreationStrategy viewModelCreationStrategy = CreationStrategy.Resolve)
{
object weakView = view;
CreateComponent(viewType, ref weakView, viewCreationStrategy);
view = (FrameworkElement)weakView;
CreateComponent(viewModelType, ref viewModel, viewModelCreationStrategy);
view.DataContext = viewModel;
Attach(view);
}