public void CreateFlowWithAssignId(Guid flowId, string flowName, User originator, string title, Dictionary<string, string> args = null, string comment = null)
{
var trans = TransactionManager.BeginTransaction();
try
{
var flow = new Flow();
flow.FlowStatus = FlowStatus.Instance;
var flowType = _flowTypeRepository.GetByTypeName(flowName);
if (flowType == null)
throw new Exception(string.Format("{0}的流程类型不存在", flowName));
flow.FlowType = flowType;
flow.Id = flowId;
flow.Title = title;
args = args ?? new Dictionary<string, string>();
args.ToList().ForEach(o => flow.FlowDataFields.Add(new FlowDataField { Name = o.Key, Value = o.Value }));
flow.RecordDescription.CreateBy(originator);
flow.UserOfFlowAdmin = originator;
var history = new FlowHistory()
{
Comment = comment,
Action = "提交流程",
Stage = "发起流程"
};
history.RecordDescription.CreateBy(originator);
flow.FlowHistories.Add(history);
_flowRepository.Save(flow);
trans.Commit();
}
catch (Exception)
{
trans.Rollback();
throw;
}
}
private void Finished(Flow flow)
{
flow.Finished();
_flowRepository.Save(flow);
}
private void DealSingleFlowNode(Flow flow, MessageContainer messageContainer)
{
if (!flow.IsCompleted())
return;
flow.Finished();
_flowRepository.Save(flow);
}
private void DealServerNodeLoop(Flow flow, FlowNode targetFlowNode, MessageContainer messageContainer)
{
var nodes = new Stack<FlowNodeInstance>();
var node = DealServerNode(flow, targetFlowNode, messageContainer);
if (node == null)
{
Finished(flow);
return;
}
nodes.Push(node);
while (nodes.Any())
{
//这里循环处理，主要是为了使服务器节点无延迟的即时处理，因为服务器节点仅依赖流程变量与客户无关
//而客户节点肯定是依赖于客户的操作来处理
var tempFlowNodeInstance = nodes.Pop();
if (!tempFlowNodeInstance.BelongsFlowNode.IsServerNode)
{
DealClientNode(flow, tempFlowNodeInstance.GetNextNodeTypeWhenActioned(), messageContainer);
return;
}
var returnNodeInstanace = DealServerNode(flow, tempFlowNodeInstance.GetNextNodeTypeWhenActioned(), messageContainer);
//服务端与客户端的区别，服务端的处理完之后就已经Finished了，所以直接接着处理下一个节点，
//如果是客户端则需要生成客户端任务，服务端则继续执行服务端的处理
if (returnNodeInstanace == null)
{
Finished(flow);
return;
}
nodes.Push(returnNodeInstanace);
}
}
private FlowNodeInstance DealServerNode(Flow flow, FlowNode targetFlowNode, MessageContainer messageContainer)
{
if (targetFlowNode == null)
return null;
//生成服务端节点实例
var newFlowInstanceOfServer = new FlowNodeInstance();
newFlowInstanceOfServer.BelongsFlow = flow;
newFlowInstanceOfServer.BelongsFlowNode = targetFlowNode;
newFlowInstanceOfServer.TimeOfFinished = DateTime.Now;
newFlowInstanceOfServer.Execute();
newFlowInstanceOfServer.InstanceStatus = InstanceStatus.Finished;
_flowNodeInstanceRepository.Save(newFlowInstanceOfServer);
return newFlowInstanceOfServer;
}
private FlowNodeInstance DealClientNode(Flow flow, FlowNode targetFlowNode, MessageContainer messageContainer)
{
//创建新节点实例
var newFlowInstance = new FlowNodeInstance();
newFlowInstance.BelongsFlow = flow;
newFlowInstance.BelongsFlowNode = targetFlowNode;
var newTasks = newFlowInstance.BuilderTasksAndReturnNewTasks();
_flowNodeInstanceRepository.Save(newFlowInstance);
newTasks.ToList().ForEach(task => _flowNodeInstanceTaskRepository.Save(task));
return newFlowInstance;
}
private void CreateSingleFlowNodeInstance(Flow flow, MessageContainer messageContainer)
{
var trans = TransactionManager.BeginTransaction();
try
{
var flowNode = flow.FlowType.GetFirstNode();
if (flowNode == null)
throw new ApplicationException("流程不存在任务节点,流程 id=" + flow.Id);
if (flowNode.IsServerNode)
DealServerNodeLoop(flow, flowNode, messageContainer);
else
DealClientNode(flow, flowNode, messageContainer);
flow.FlowStatus = FlowStatus.Start;
flow.RecordDescription.DateOfLastestModify = DateTime.Now;
_flowRepository.Save(flow);
trans.Commit();
}
catch (Exception)
{
trans.Rollback();
throw;
}
}