public static IWorkflow Instantiate(IWorkplan workplan, IWorkplanContext context)
{
// Prepare variables
var places = new Dictionary <long, IPlace>();
var transitions = new List <ITransition>();
// Iterate over each step and find its connectors
foreach (var step in workplan.Steps)
{
// Create transition
var transition = step.CreateInstance(context);
// Set inputs
for (var i = 0; i < step.Inputs.Length; i++)
{
transition.Inputs[i] = GetPlace(step.Inputs[i], places);
}
// Set outputs
for (int i = 0; i < step.Outputs.Length; i++)
{
transition.Outputs[i] = GetPlace(step.Outputs[i], places);
}
transitions.Add(transition);
}
return(new SimpleWorkflow(workplan, places.Values.ToList(), transitions));
}
/// <summary>
/// Instantiate transition from this step
/// </summary>
protected override TransitionBase Instantiate(IWorkplanContext context)
{
var engine = Workflow.CreateEngine(Workplan, context);
var indexResolver = _indexResolver ??= TransitionBase.CreateIndexResolver(OutputDescriptions);
var transition = new SubworkflowTransition(engine, indexResolver);
return(transition);
}
/// <summary>
/// Create the workflow engine for a given workflow instance and add context
/// </summary>
private static WorkflowEngine CreateWorkflowEngine(IWorkflow workflow, IWorkplanContext context)
{
var engine = new WorkflowEngine {
Context = context
};
engine.Initialize(workflow);
return(engine);
}
///
public ITransition CreateInstance(IWorkplanContext context)
{
var transition = Instantiate(context);
transition.Id = Id;
transition.Inputs = new IPlace[Inputs.Length];
transition.Outputs = new IPlace[Outputs.Length];
return(transition);
}
/// <summary>
/// Creates a <see cref="TaskTransition{T}"/> for this activity type
/// </summary>
protected override TransitionBase Instantiate(IWorkplanContext context)
{
if (context.IsDisabled(this))
{
return(new NullTransition());
}
// Create transition
var indexResolver = _indexResolver ?? (_indexResolver = TransitionBase.CreateIndexResolver(OutputDescriptions));
return(new TaskTransition <TActivity>(Parameters, indexResolver));
}
///
protected override TransitionBase Instantiate(IWorkplanContext context)
{
return(new PausableTransition());
}
///
protected override TransitionBase Instantiate(IWorkplanContext context)
{
return(new DummyTransition {
Context = context, Name = Name
});
}
/// <summary>
/// Create engine instance from workplan and context. The default factory will be used to instantiate
/// the workflow.
/// </summary>
public static IWorkflowEngine CreateEngine(IWorkplan workplan, IWorkplanContext context)
{
return(CreateWorkflowEngine(WorkflowFactory.Instantiate(workplan, context), context));
}
///
protected override TransitionBase Instantiate(IWorkplanContext context)
{
return(null);
}
/// protected abstract TransitionBase Instantiate(IWorkplanContext context);
