/// <summary>结束活动</summary>
/// <param name="token"></param>
/// <param name="targetActivityInstance"></param>
public void complete(IToken token, IActivityInstance targetActivityInstance)
{
NodeInstanceEvent event2 = new NodeInstanceEvent(this);
event2.Token = token;
event2.EventType = NodeInstanceEventEnum.NODEINSTANCE_LEAVING;//token leaving
this.fireNodeEvent(event2);
token.FromActivityId = this.Activity.Id;
if (targetActivityInstance != null)
{
token.StepNumber = token.StepNumber + 1;
targetActivityInstance.fire(token);
}
else
{
//按照定义，activity有且只有一个输出弧，所以此处只进行一次循环。
for (int i = 0; LeavingTransitionInstances != null && i < LeavingTransitionInstances.Count; i++)
{
ITransitionInstance transInst = LeavingTransitionInstances[i];
transInst.take(token);
}
}
if (token.IsAlive)
{
NodeInstanceEvent neevent = new NodeInstanceEvent(this);
neevent.Token = token;
neevent.EventType = NodeInstanceEventEnum.NODEINSTANCE_COMPLETED;//token completed
this.fireNodeEvent(neevent);
}
}
public override void fire(IToken tk)
{
//TODO 此处性能需要改善一下,20090312
IJoinPoint joinPoint = synchronized(tk);
if (joinPoint == null)
{
return;
}
//如果汇聚点的容量和同步器节点的容量相同
IProcessInstance processInstance = tk.ProcessInstance;
// Synchronize的fire条件应该只与joinPoint的value有关（value==volume），与alive无关
NodeInstanceEvent event2 = new NodeInstanceEvent(this);
event2.Token = tk;
event2.EventType = NodeInstanceEventEnum.NODEINSTANCE_FIRED;
this.fireNodeEvent(event2);
//在此事件监听器中，删除原有的token
NodeInstanceEvent event4 = new NodeInstanceEvent(this);
event4.Token = tk;
event4.EventType = NodeInstanceEventEnum.NODEINSTANCE_LEAVING;
this.fireNodeEvent(event4);
//首先必须检查是否有满足条件的循环，loop比transition有更高的优先级，
//（只能够有一个loop的条件为true，流程定义的时候需要注意）
Boolean doLoop = false;//表示是否有满足条件的循环，false表示没有，true表示有。
if (joinPoint.Alive)
{
IToken tokenForLoop = null;
tokenForLoop = new Token(); // 产生新的token
tokenForLoop.IsAlive = joinPoint.Alive;
tokenForLoop.ProcessInstance = processInstance;
tokenForLoop.StepNumber = joinPoint.StepNumber - 1;
tokenForLoop.FromActivityId = joinPoint.FromActivityId;
for (int i = 0; i < this.LeavingLoopInstances.Count; i++)
{
ILoopInstance loopInstance = this.LeavingLoopInstances[i];
doLoop = loopInstance.take(tokenForLoop);
if (doLoop)
{
break;
}
}
}
if (!doLoop)
{//如果没有循环，则执行transitionInstance
//非顺序流转的需要生成新的token，
Boolean activiateDefaultCondition = true;
ITransitionInstance defaultTransInst = null;
for (int i = 0; LeavingTransitionInstances != null && i < LeavingTransitionInstances.Count; i++)
{
ITransitionInstance transInst = LeavingTransitionInstances[i];
String condition = transInst.Transition.Condition;
if (condition != null && condition.Equals(ConditionConstant.DEFAULT))
{
defaultTransInst = transInst;
continue;
}
Token token = new Token(); // 产生新的token
token.IsAlive = joinPoint.Alive;
token.ProcessInstance = processInstance;
token.StepNumber = joinPoint.StepNumber;
token.FromActivityId = joinPoint.FromActivityId;
Boolean alive = transInst.take(token);
if (alive)
{
activiateDefaultCondition = false;
}
}
if (defaultTransInst != null)
{
Token token = new Token();
token.IsAlive = activiateDefaultCondition && joinPoint.Alive;
token.ProcessInstance = processInstance;
token.StepNumber = joinPoint.StepNumber;
token.FromActivityId = joinPoint.FromActivityId;
defaultTransInst.take(token);
}
}
NodeInstanceEvent event3 = new NodeInstanceEvent(this);
event3.Token = tk;
event3.EventType = NodeInstanceEventEnum.NODEINSTANCE_COMPLETED;
this.fireNodeEvent(event3);
}
/// <summary>
/// 开始节点触发
/// </summary>
/// <param name="tk"></param>
public override void fire(IToken tk)
{
if (!tk.IsAlive) //如果token是false，那么直接返回
{
return; //
}
if (tk.Value != this.Volume)
{
KernelException exception = new KernelException(tk.ProcessInstance,
this.startNode,
"Error:Illegal StartNodeInstance,the tokenValue MUST be equal to the volume ");
throw exception;
}
tk.NodeId = this.Synchronizer.Id; //到开始节点（同步器）
IProcessInstance processInstance = tk.ProcessInstance; //从token中获得流程实例对象
//触发token_entered事件
NodeInstanceEvent event1 = new NodeInstanceEvent(this);
event1.Token = tk;
event1.EventType = NodeInstanceEventEnum.NODEINSTANCE_TOKEN_ENTERED;//token进入
this.fireNodeEvent(event1);
//触发fired事件
NodeInstanceEvent event2 = new NodeInstanceEvent(this);
event2.Token = tk;
event2.EventType = NodeInstanceEventEnum.NODEINSTANCE_FIRED;//token 触发
this.fireNodeEvent(event2);
//触发leaving事件
NodeInstanceEvent event4 = new NodeInstanceEvent(this);
event4.Token = tk;
event4.EventType = NodeInstanceEventEnum.NODEINSTANCE_LEAVING;//token 离开
this.fireNodeEvent(event4);
Boolean activiateDefaultCondition = true;//激活默认弧线的标志
ITransitionInstance defaultTransInst = null;
//找到所有开始节点的输出弧
for (int i = 0; LeavingTransitionInstances != null && i < LeavingTransitionInstances.Count; i++)
{
ITransitionInstance transInst = LeavingTransitionInstances[i];//开始节点的边的类型只能是transition
String condition = transInst.Transition.Condition;
//如果弧线的条件！=null 并且 =“default” ，那么弧线实例就是default的弧线了。
if (condition != null && condition.Equals(ConditionConstant.DEFAULT))
{
defaultTransInst = transInst;//记录default转移线，其他条件都未false，才执行它
continue;
}
Token token = new Token(); // 产生新的token
token.IsAlive = true;
token.ProcessInstance = processInstance;
token.FromActivityId = tk.FromActivityId;
token.StepNumber = tk.StepNumber + 1; //步骤号+1
Boolean alive = transInst.take(token); //触发弧线的token
if (alive)
{
activiateDefaultCondition = false;
}
}
if (defaultTransInst != null)//如果defaultTransInst!=null ，走的是default值的弧线
{
Token token = new Token();
token.IsAlive = activiateDefaultCondition;//设置token为dead
token.ProcessInstance = processInstance;
token.FromActivityId = token.FromActivityId;
token.StepNumber = tk.StepNumber + 1;
defaultTransInst.take(token);
}
//触发completed事件
NodeInstanceEvent event3 = new NodeInstanceEvent(this);
event3.Token = tk;
event3.EventType = NodeInstanceEventEnum.NODEINSTANCE_COMPLETED;
this.fireNodeEvent(event3);
}