private bool HasCurrentActivityBeforeActivity(WorkflowActivityInput input, WorkflowDefinition definition,
IWorkflowActivityBase activity, List<WorkflowTransition> checkedTransitions)
{
var inboundTransitions = definition.GetInboundTransitions(activity);
if (inboundTransitions.Any(t => input.Instance.CurrentActivityIds.Contains(t.From)))
return true;
checkedTransitions.AddRange(inboundTransitions);
foreach (var transition in inboundTransitions)
{
if (HasCurrentActivityBeforeActivity(input, definition, definition.GetActivityById(transition.From), checkedTransitions))
return true;
}
return false;
}
private bool HasCurrentActivityBeforeActivity(WorkflowActivityInput input, WorkflowDefinition definition,
IWorkflowActivityBase activity, List <WorkflowTransition> checkedTransitions)
{
var inboundTransitions = definition.GetInboundTransitions(activity);
if (inboundTransitions.Any(t => input.Instance.CurrentActivityIds.Contains(t.From)))
{
return(true);
}
checkedTransitions.AddRange(inboundTransitions);
foreach (var transition in inboundTransitions)
{
if (HasCurrentActivityBeforeActivity(input, definition, definition.GetActivityById(transition.From), checkedTransitions))
{
return(true);
}
}
return(false);
}
/// <summary>Called when the previous activity has been executed.
/// The method may be called multiple times when there are multiple incoming transitions. </summary>
/// <param name="input">The input. </param>
/// <param name="definition">The workflow definition. </param>
/// <returns>True when the activity should be automatically and immediately executed (with no args). </returns>
internal override Task <bool> PrepareAsync(WorkflowActivityInput input, WorkflowDefinition definition)
{
var immediatelyExecute = !HasCurrentActivityBeforeActivity(input, definition, this, new List <WorkflowTransition>());
return(Task.FromResult(immediatelyExecute));
}
/// <summary>Called when the previous activity has been executed.
/// The method may be called multiple times when there are multiple incoming transitions. </summary>
/// <param name="input">The input. </param>
/// <returns>True when the activity should be automatically and immediately executed (with no args). </returns>
public override Task<bool> PrepareAsync(WorkflowActivityInput input)
{
return Task.FromResult(true);
}
/// <summary>Called when the previous activity has been executed.
/// The method may be called multiple times when there are multiple incoming transitions. </summary>
/// <param name="input">The input. </param>
/// <returns>True when the activity should be automatically and immediately executed (with no args). </returns>
public override Task <bool> PrepareAsync(WorkflowActivityInput input)
{
return(Task.FromResult(true));
}
/// <summary>Called when the previous activity has been executed.
/// The method may be called multiple times when there are multiple incoming transitions. </summary>
/// <param name="input">The input. </param>
/// <param name="definition">The workflow definition. </param>
/// <returns>True when the activity should be automatically and immediately executed (with no args). </returns>
internal override Task<bool> PrepareAsync(WorkflowActivityInput input, WorkflowDefinition definition)
{
var immediatelyExecute = !HasCurrentActivityBeforeActivity(input, definition, this, new List<WorkflowTransition>());
return Task.FromResult(immediatelyExecute);
}
