public NodeReader(ProcessDefinition processDefinition, string xmlstring)
{
#region 读取xml处理
try
{
//初始化
_startNodeIndex = -1;
_endNodeIndex = -1;
_rootElement = null;
_nodes = new List<Task>();
_taskNameMap = new Dictionary<string, int>();
StringReader ts = new StringReader(xmlstring);
var _xmlreader = new XmlTextReader(ts);
_rootElement = null;
var _elementStack = new ArrayList();
while (_xmlreader.Read())
{
switch (_xmlreader.NodeType)
{
case XmlNodeType.XmlDeclaration: //xml声明信息
break;
case XmlNodeType.Element: //元素信息
Node newElement = new Node(_xmlreader.Name);
bool isEmptyElement = _xmlreader.IsEmptyElement;
Hashtable attributes = new Hashtable();
if (_xmlreader.HasAttributes)
{
for (int i = 0; i < _xmlreader.AttributeCount; i++)
{
_xmlreader.MoveToAttribute(i);
attributes.Add(_xmlreader.Name, _xmlreader.Value);
}
}
newElement.Attributes = attributes;
//元素堆栈为空时，为根节点（流程节点），不为空时，为子节点（任务节点）
int elementStackSize = _elementStack.Count;
if (elementStackSize > 0)
{
Node containingElement = (Node)_elementStack[_elementStack.Count - 1];
containingElement.AddChild(newElement);
}
else
{
_rootElement = newElement;
_name = newElement.GetAttribute("name"); //取得流程的信息(名称+版本)
_version = newElement.GetAttribute("version");
_description = newElement.GetAttribute("description");
_bizKeyName = newElement.GetAttribute("bizkey");
}
_elementStack.Add(newElement);
if (isEmptyElement)
{
_elementStack.RemoveAt(_elementStack.Count - 1);
}
break;
case XmlNodeType.EndElement: //结束节点
_elementStack.RemoveAt(_elementStack.Count - 1);
break;
case XmlNodeType.Text: //普通文本
if (_xmlreader.Value.Length > 0)
{
Node element = (Node)_elementStack[_elementStack.Count - 1];
element.AddText(_xmlreader.Value);
}
break;
}
}
//将节点的所有属性信息存在RootElement中
var contents = _rootElement.Content;
var length = contents.Count;
//循环存储Task的信息
for (var i = 0; i < length; i++)
{
Node node = (Node)contents[i];
switch (node.Name.ToLower())
{
case "controller":
#region controller
//node.AddChild()
foreach (var item in node.GetChildElements("variable"))
{
Node varNode = (Node)item;
_processVars.Add(varNode.GetAttribute("name"), varNode.GetAttribute("type"));
}
#endregion
break;
default:
#region taskAttribute
Task task = new Task();
//int Duetime = HOLDConvert.ToInt(BLLSysControl.GetParam("Duetime"), 0); //到期默认天数
//int Extendedtime = HOLDConvert.ToInt(BLLSysControl.GetParam("Extendedtime"),0); //超期默认天数
task.Index = i; //index
task.Name = node.GetAttribute("name"); //名称
//task.Description = node.GetAttribute("description"); //描述
task.Version = _version; //版本
////task.IsBlocking = HOLDConvert.ToBool(node.GetAttribute("Blocking")); //是否阻塞
////task.DueTime = HOLDConvert.ToInt(node.GetAttribute("duetime"), 0); //到期 天数天数
////task.ExtendedTime = HOLDConvert.ToInt(node.GetAttribute("extendedtime"), 0); //超期天数
////task.IsAssign = (node.GetAttribute("isassign") == null) ? true : HOLDConvert.ToBool(node.GetAttribute("isassign"));
////task.IsAutoStart = (node.GetAttribute("isautostart") == null) ? false : HOLDConvert.ToBool(node.GetAttribute("isautostart"));
//task.NodeType = Enum.EunmConvert.ToNodeType(node.Name); //节点类型
//task.LogicType = Enum.EunmConvert.ToLogicType(node.GetAttribute("logictype")); //逻辑类型
task.PDefinition = processDefinition; //流程定义
//task.ReturnParent = (node.GetAttribute("returnparent") == null) ? false : HOLDConvert.ToBool(node.GetAttribute("returnparent"));
//...todo
//子流程相关
task.SubFlowName = node.GetAttribute("subflowname");
task.SubFlowVersion = node.GetAttribute("subflowversion");
foreach (var item in node.GetChildElements("form"))
{
Node formnode = (Node)item;
task.Form = formnode.GetAttribute("value");
//task.FromType = Enum.EunmConvert.ToFormType(formnode.GetAttribute("type"));
}
foreach (var itemControl in node.GetChildElements("controller"))
{
Node ControlNode = (Node)itemControl;
foreach (var item in ControlNode.GetChildElements("variable"))
{
Node varNode = (Node)item;
task.TaskVars.Add(varNode.GetAttribute("name"), varNode.GetAttribute("type"));
}
}
//string Form{get;set;} //表单
//string FormDefaultValue{get;set;} //表单默认值
//FormType FromType{get;set;} //表单类型
_nodes.Add(task);
_taskNameMap.Add(task.Name, task.Index);
//标志开始和结束节点的位置
if (node.Name == "start")
{
_startNodeIndex = i;
}
else if (node.Name == "end")
{
_endNodeIndex = i;
}
#endregion
break;
}
}
if (_startNodeIndex < 0 || _endNodeIndex < 0)
{
throw new Exception("缺少开始结束节点");
}
#region 循环存储来源和去向节点，动作
for (var i = 0; i < length; i++)
{
Node node = (Node)contents[i];
var transitions = node.GetChildElements("transition");
foreach (var item in transitions)
{
var transNode = (Node)item;
var toIndex = _taskNameMap[transNode.GetAttribute("to")];
var fromNode = _nodes[i];
var toNode = _nodes[toIndex];
var transition = new Transition();
transition.From = fromNode;
transition.To = toNode;
transition.Condition = transNode.GetAttribute("condition");
var events = transNode.GetChildElements("action");
foreach (var ievent in events)
{
var actionNode = (Node)ievent;
var action = new EventAction();
action.Name = actionNode.Name;
action.Class = actionNode.GetAttribute("class");
action.Method = actionNode.GetAttribute("method");
action.EventType = EunmConvert.ToEventType(actionNode.GetAttribute("event"));
action.ActionType = EunmConvert.ToActionType(actionNode.GetAttribute("type"));
action.VarNames = actionNode.GetAttribute("variable");
transition.Event.Add(action);
}
fromNode.LeavingTransitions.Add(transition);
toNode.ArrivingTransitions.Add(transition);
}
var actions = node.GetChildElements("action");
foreach (var item in actions)
{
var actionNode = (Node)item;
var action = new EventAction();
action.Name = actionNode.Name;
action.Class = actionNode.GetAttribute("class");
action.Method = actionNode.GetAttribute("method");
action.EventType = EunmConvert.ToEventType(actionNode.GetAttribute("event"));
action.ActionType = EunmConvert.ToActionType(actionNode.GetAttribute("type"));
action.VarNames = actionNode.GetAttribute("variable");
_nodes[i].Actions.Add(action);
}
}
#endregion
}
catch (Exception ex)
{
throw ex;
}
#endregion
}
public ActionInstance(EventAction eventAction) {
this.eventAction = eventAction;
}