/// <summary>
/// 启动。
/// </summary>
public void Start(FlowStepInstance flowStepInstance)
{
FlowProcessInstance flowProcessInstance = new FlowProcessInstance();
flowProcessInstance.ProcessInstanceID = flowStepInstance.ProcessInstanceID;
if (this.flowProcessInstanceEntity.LoadRecord(ref flowProcessInstance))
{
#region 流程处理。
EnumInstanceProcessStatus status = (EnumInstanceProcessStatus)flowProcessInstance.InstanceProcessStatus;
FlowInstanceRunError err = null;
switch (status)
{
case EnumInstanceProcessStatus.Run:
{
try
{
Process process = Utils.DeSerializerDatabaseFormart<Process>(flowProcessInstance.ProcessSerialization, flowProcessInstance.Verify);
if (process == null)
throw new Exception("流程实例反序列化失败。");
this.FlowServiceCore(flowProcessInstance, flowStepInstance, process);
string strVerify = null;
flowProcessInstance.ProcessSerialization = Utils.SerializerDatabaseFormart<Process>(process, out strVerify);
if (!string.IsNullOrEmpty(strVerify) && (flowProcessInstance.Verify != strVerify))
{
flowProcessInstance.Verify = strVerify;
this.flowProcessInstanceEntity.UpdateRecord(flowProcessInstance);
}
}
catch (Exception e)
{
flowStepInstance.InstanceStepStatus = (int)EnumInstanceStepStatus.Error;
err = new FlowInstanceRunError();
err.ErrorID = GUIDEx.New;
err.ProcessInstanceID = flowProcessInstance.ProcessInstanceID;
err.StepInstanceID = flowStepInstance.StepInstanceID;
err.ErrorMessage = e.Message;
err.CreateDate = DateTime.Now;
this.flowInstanceRunErrorEntity.UpdateRecord(err);
flowProcessInstance.InstanceProcessStatus = (int)EnumInstanceProcessStatus.Error;
this.flowProcessInstanceEntity.UpdateRecord(flowProcessInstance);
}
}
break;
case EnumInstanceProcessStatus.Complete:
{
flowStepInstance.InstanceStepStatus = (int)EnumInstanceStepStatus.Error;
err = new FlowInstanceRunError();
err.ErrorID = GUIDEx.New;
err.ProcessInstanceID = flowProcessInstance.ProcessInstanceID;
err.StepInstanceID = flowStepInstance.StepInstanceID;
err.ErrorMessage = "该流程已经完成结束。";
err.CreateDate = DateTime.Now;
this.flowInstanceRunErrorEntity.UpdateRecord(err);
}
break;
case EnumInstanceProcessStatus.Error:
{
flowStepInstance.InstanceStepStatus = (int)EnumInstanceStepStatus.Error;
}
break;
case EnumInstanceProcessStatus.Stop:
{
flowStepInstance.InstanceStepStatus = (int)EnumInstanceStepStatus.Suspended;
err = new FlowInstanceRunError();
err.ErrorID = GUIDEx.New;
err.ProcessInstanceID = flowProcessInstance.ProcessInstanceID;
err.StepInstanceID = flowStepInstance.StepInstanceID;
err.ErrorMessage = "该流程已经被暂停。";
err.CreateDate = DateTime.Now;
this.flowInstanceRunErrorEntity.UpdateRecord(err);
}
break;
}
#endregion
}
else
flowStepInstance.InstanceStepStatus = (int)EnumInstanceStepStatus.Suspended;
}
/// <summary>
///
/// </summary>
/// <param name="flowProcessInstance">流程实例。</param>
/// <param name="flowStepInstance">步骤实例。</param>
/// <param name="process">流程定义。</param>
void FlowServiceCore(FlowProcessInstance flowProcessInstance, FlowStepInstance flowStepInstance, Process process)
{
Step step = process.Steps[flowStepInstance.StepID];
if (step == null)
throw new Exception(string.Format("流程定义中没有找到步骤[步骤ID：{0}]", flowStepInstance.StepID));
else if (step.StepType == EnumStepType.Last)//终结步骤。
{
flowProcessInstance.EndDate = flowStepInstance.EndDate = DateTime.Now;
flowStepInstance.InstanceStepStatus = (int)EnumInstanceStepStatus.Complete;
flowProcessInstance.InstanceProcessStatus = (int)EnumInstanceProcessStatus.Complete;
this.flowProcessInstanceEntity.UpdateRecord(flowProcessInstance);
return;
}
EnumStepMode stepMode = step.StepMode;
TransitionCollection transitionCollection = null;
if (stepMode == EnumStepMode.JoinAND)//与汇聚处理。
{
transitionCollection = process.Transitions.FindToStepTransition(step.StepID);
if (transitionCollection == null || transitionCollection.Count == 0)
throw new Exception("流程定义中没有找到变迁规则。");
bool bResult = true;
foreach (Transition t in transitionCollection)
{
bResult &= this.CoreConditionsCalculated(process, t, step, flowStepInstance.StepInstanceID, false);
}
if (!bResult)
{
flowStepInstance.InstanceStepStatus = (int)EnumInstanceStepStatus.Suspended;
return;
}
}
//非与汇聚处理。
transitionCollection = process.Transitions.FindTransition(step.StepID);
if (transitionCollection == null || transitionCollection.Count == 0)
throw new Exception("流程定义中没有找到变迁规则。");
foreach (Transition t in transitionCollection)
{
this.CoreConditionsCalculated(process, t, step, flowStepInstance.StepInstanceID, true);
}
flowStepInstance.InstanceStepStatus = (int)EnumInstanceStepStatus.Complete;
}