private string TryAddExecutionPointer(string pathId, BaseFlowNode flowNode, ICollection <MessageToken> outcomeValues = null)
{
ICollection <MessageToken> incoming = new List <MessageToken>();
if (outcomeValues != null)
{
incoming = outcomeValues;
}
var instanceId = string.Empty;
if (!TryAddInstance(flowNode, pathId, out instanceId))
{
var pointer = GetActiveExecutionPointer(pathId, instanceId);
if (pointer != null)
{
var e = new IncomingTokenAddedEvent(Guid.NewGuid().ToString(), AggregateId, Version + 1, pointer.ExecutionPathId, pointer.Id, JsonConvert.SerializeObject(incoming), DateTime.UtcNow);
Handle(e);
DomainEvents.Add(e);
return(pointer.Id);
}
}
var id = Guid.NewGuid().ToString();
var evt = new ExecutionPointerAddedEvent(Guid.NewGuid().ToString(), AggregateId, Version + 1, id, pathId, instanceId, flowNode.EltId, JsonConvert.SerializeObject(incoming), DateTime.UtcNow);
Handle(evt);
DomainEvents.Add(evt);
return(id);
}
private void Handle(ExecutionPointerAddedEvent evt)
{
var tokens = MessageToken.DeserializeLst(evt.SerializedTokens);
var path = GetExecutionPath(evt.ExecutionPathId);
path.Pointers.Add(new ExecutionPointer
{
Id = evt.ExecutionPointerId,
ExecutionPathId = path.Id,
FlowNodeId = evt.FlowNodeId,
InstanceFlowNodeId = evt.FlowNodeInstanceId,
Incoming = tokens
});
Version = evt.Version;
UpdateDateTime = evt.CreateDateTime;
}