public AdvertisedPipelineComponentTypeUnderContext(Type componentType, IPipelineUseCase useCase)
{
_componentType = componentType;
_role = PipelineComponent.GetRoleFor(componentType);
var context = useCase.GetContext();
_allowableUnderContext = context.IsAllowable(componentType, out _allowableReason);
Type[] initializationTypes;
var initializationObjects = useCase.GetInitializationObjects();
//it is permitted to specify only Types as initialization objects if it is design time and the user hasn't picked any objects to execute the use case under
if (useCase.IsDesignTime && initializationObjects.All(t => t is Type))
{
initializationTypes = initializationObjects.Cast <Type>().ToArray();
}
else
{
initializationTypes = useCase.GetInitializationObjects().Select(o => o.GetType()).ToArray();
}
foreach (var requiredInputType in context.GetIPipelineRequirementsForType(componentType))
{
//if there are no initialization objects that are instances of an IPipelineRequirement<T> then we cannot satisfy the components pipeline requirements (e.g. a component DelimitedFlatFileDataFlowSource requires a FlatFileToLoad but pipeline is trying to load from a database reference)
if (!initializationTypes.Any(available => requiredInputType == available || requiredInputType.IsAssignableFrom(available)))
{
unmetRequirements.Add(requiredInputType);
}
}
}
public PluginPipelineUser(RequiredPropertyInfo demand, ArgumentValueUIArgs args, object demanderInstance)
: base(new Type[] { }) //makes it a design time use case
{
Getter = () =>
{
var p = (Pipeline)args.InitialValue;
return(p);
};
Setter = v => args.Setter(v);
var pipeDemander = demanderInstance as IDemandToUseAPipeline;
if (pipeDemander == null)
{
throw new NotSupportedException("Class " + demanderInstance.GetType().Name + " does not implement interface IDemandToUseAPipeline despite having a property which is a Pipeline");
}
_useCase = pipeDemander.GetDesignTimePipelineUseCase(demand);
ExplicitSource = _useCase.ExplicitSource;
ExplicitDestination = _useCase.ExplicitDestination;
foreach (var o in _useCase.GetInitializationObjects())
{
AddInitializationObject(o);
}
GenerateContext();
}
public ConfigureAndExecutePipelineUI(IPipelineUseCase useCase, IActivateItems activator)
{
_useCase = useCase;
InitializeComponent();
//designer mode
if (useCase == null && activator == null)
{
return;
}
SetItemActivator(activator);
progressUI1.ApplyTheme(activator.Theme);
pipelineDiagram1 = new PipelineDiagramUI();
pipelineDiagram1.Dock = DockStyle.Fill;
panel_pipelineDiagram1.Controls.Add(pipelineDiagram1);
fork = new ForkDataLoadEventListener(progressUI1);
var context = useCase.GetContext();
if (context.GetFlowType() != typeof(DataTable))
{
throw new NotSupportedException("Only DataTable flow contexts can be used with this class");
}
foreach (var o in useCase.GetInitializationObjects())
{
var de = o as DatabaseEntity;
if (o is DatabaseEntity)
{
CommonFunctionality.Add(new ExecuteCommandShow(activator, de, 0, true));
}
else
{
CommonFunctionality.Add(o.ToString());
}
_initializationObjects.Add(o);
}
SetPipelineOptions(activator.RepositoryLocator.CatalogueRepository);
lblTask.Text = "Task: " + UsefulStuff.PascalCaseStringToHumanReadable(useCase.GetType().Name);
}
private void AddPipelineComponent(IPipelineComponent toRealize, DataFlowComponentVisualisation.Role role)
{
Exception exConstruction;
//create the pipeline realization (might fail
var value = _pipelineFactory.TryCreateComponent(toRealize, out exConstruction);
if (role != DataFlowComponentVisualisation.Role.Source)
{
AddDividerIfReorderingAvailable();
}
//create the visualization
var component = new PipelineComponentVisualisation(toRealize, role, value, exConstruction, component_shouldAllowDrop);
component.DragDrop += component_DragDrop;
flpPipelineDiagram.Controls.Add(component);//add the component
//try to initialize the realization (we do this after creating visualization so that when the events come in we can record where on UI the consumption events happen and also because later on it might be that initialization takes ages and we want to use a Thread)
if (value != null)
{
try
{
if (!_useCase.IsDesignTime)
{
_useCase.GetContext().PreInitializeGeneric(new ThrowImmediatelyDataLoadEventListener(), value, _useCase.GetInitializationObjects().ToArray());
component.Check();
}
component.CheckMandatoryProperties();
}
catch (Exception exInit)
{
//initialization failed
component.ExInitialization = exInit;
}
}
component.AllowDrag = AllowReOrdering;
if (AllowSelection)
{
component.AllowSelection = true;
component.ComponentSelected += component_Selected;
}
//PipelineComponents can never be locked because they are user setup things
component.IsLocked = false;
}
public void SetTo(IPipeline pipeline, IPipelineUseCase useCase)
{
_useCase = useCase;
_pipeline = pipeline;
if (_pipeline != null)
{
_pipeline.ClearAllInjections();
}
//clear the diagram
flpPipelineDiagram.Controls.Clear();
pipelineSmiley.Reset();
try
{
//if there is a pipeline
if (_pipeline != null)
{
try
{
_pipelineFactory = new DataFlowPipelineEngineFactory(_useCase, _pipeline);
//create it
IDataFlowPipelineEngine pipelineInstance = _pipelineFactory.Create(pipeline, new ThrowImmediatelyDataLoadEventListener());
//initialize it (unless it is design time)
if (!_useCase.IsDesignTime)
{
pipelineInstance.Initialize(_useCase.GetInitializationObjects().ToArray());
}
}
catch (Exception ex)
{
pipelineSmiley.Fatal(ex);
}
//There is a pipeline set but we might have been unable to fully realize it so setup stuff based on PipelineComponents
//was there an explicit instance?
if (_useCase.ExplicitSource != null)
{
AddExplicit(_useCase.ExplicitSource);//if so add it
}
else
//there wasn't an explicit one so there was a PipelineComponent maybe? albiet one that might be broken?
if (pipeline.SourcePipelineComponent_ID != null)
{
AddPipelineComponent((int)pipeline.SourcePipelineComponent_ID, DataFlowComponentVisualisation.Role.Source, pipeline.Repository); //add the possibly broken PipelineComponent to the diagram
}
else
{
AddBlankComponent(DataFlowComponentVisualisation.Role.Source); //the user hasn't put one in yet
}
foreach (var middleComponent in pipeline.PipelineComponents.Where(c => c.ID != pipeline.SourcePipelineComponent_ID && c.ID != pipeline.DestinationPipelineComponent_ID).OrderBy(comp => comp.Order))
{
AddPipelineComponent(middleComponent, DataFlowComponentVisualisation.Role.Middle);//add the possibly broken PipelineComponent to the diagram
}
//was there an explicit instance?
if (_useCase.ExplicitDestination != null)
{
AddDividerIfReorderingAvailable();
AddExplicit(_useCase.ExplicitDestination);//if so add it
}
else
//there wasn't an explicit one so there was a PipelineComponent maybe? albiet one that might be broken?
if (pipeline.DestinationPipelineComponent_ID != null)
{
AddPipelineComponent((int)pipeline.DestinationPipelineComponent_ID, DataFlowComponentVisualisation.Role.Destination, pipeline.Repository); //add the possibly broken PipelineComponent to the diagram
}
else
{
AddDividerIfReorderingAvailable();
AddBlankComponent(DataFlowComponentVisualisation.Role.Destination); //the user hasn't put one in yet
}
return;
}
//Fallback
//user has not picked a pipeline yet, show him the shell (factory)
//factory has no source, add empty source
if (_useCase.ExplicitSource == null)
{
AddBlankComponent(DataFlowComponentVisualisation.Role.Source);
}
else
{
AddExplicit(_useCase.ExplicitSource);
}
//factory has no source, add empty source
if (_useCase.ExplicitDestination == null)
{
AddBlankComponent(DataFlowComponentVisualisation.Role.Destination);
}
else
{
AddExplicit(_useCase.ExplicitDestination);
}
}
finally
{
Invalidate();
}
}