private FlowStep GetFlowStep(WorkflowActivity workflow, string activityName)
{
return workflow.Body.Nodes.FirstOrDefault(o =>
o is FlowStep && (o as FlowStep).Action.DisplayName == activityName) as FlowStep;
}
private FlowStep GetNextFlowStep(WorkflowActivity workflow, FlowStep step)
{
var flowSwitch = step.Next as FlowSwitch<string>;
return flowSwitch.Cases.Count > 0
? flowSwitch.Cases.First().Value as FlowStep
: flowSwitch.Default as FlowStep;
}
public virtual string Parse(WorkflowActivity workflowActivity, string originalWorkflowDefinition)
{
return Resource.WorkflowDefinition5;
}
//将工作流转换为定义文本
public virtual string Parse(WorkflowActivity activity, string originalWorkflowDefinition)
{
return this._workflowConverterFactory.Create().Parse(activity, originalWorkflowDefinition);
}
//设置变量集合
private void SetVariablesForActivity(System.Collections.ObjectModel.Collection<System.Activities.Variable> variables
, WorkflowActivity activity)
{
foreach (var variable in variables)
{
//判断变量名称是否合法
if (Regex.IsMatch(variable.Name, @"[a-zA-Z][a-zA-Z_0-9]*"))
{
if (variable.GetType().IsGenericType)
{
var dataType = variable.GetType().GetGenericArguments()[0];
if (dataType == typeof(String))
activity.Variables.Add(new Taobao.Activities.Variable<String>(variable.Name));
else if (dataType == typeof(Int32))
activity.Variables.Add(new Taobao.Activities.Variable<Int32>(variable.Name));
else if (dataType == typeof(Int64))
activity.Variables.Add(new Taobao.Activities.Variable<Int64>(variable.Name));
}
}
}
}
//通过Flowchart节点和自定义活动列表解析NTFE-BPM活动树
private Statements.WorkflowActivity ParseWorkflowActivity(System.Activities.Statements.Flowchart flowchart
, IList<ActivitySetting> activitySettings
, bool isCacheMetaData)
{
var activity = new WorkflowActivity();
//设置变量集合
this.SetVariablesForActivity(flowchart.Variables, activity);
var flowNodes = new Dictionary<int, FlowNodeInfo>(); //定义点集合
var flowLines = new List<FlowLineInfo>(); //定义线段集合
var temp = new List<string>();
foreach (var wf_node in flowchart.Nodes)
{
if (wf_node is System.Activities.Statements.FlowSwitch<string>)
{
var wf_FlowSwitch = wf_node as System.Activities.Statements.FlowSwitch<string>;
var literal = (System.Activities.Expressions.Literal<string>)wf_FlowSwitch.Expression;
if (literal == null || literal.Value == string.Empty)
throw new Exception(@"流程中包括名称为空的节点，请检查！");
var expression = literal.Value;
var activityName = ParseActivityName(expression);
if (temp.Contains(activityName))
throw new InvalidOperationException("流程中包括重复名称的节点，请检查！");
temp.Add(activityName);
var activitySetting = activitySettings.FirstOrDefault(o => o.ActivityName == activityName);
if (activitySetting == null)
throw new Exception(string.Format(@"解析出错，找不到名称为“{0}”的ActivitySetting", activityName));
Taobao.Activities.Statements.FlowStep flowStep = null;
if (activitySetting is HumanSetting)
{
var humanSetting = activitySetting as HumanSetting;
//创建人工节点
flowStep = WorkflowBuilder.CreateHuman(activitySetting
, activitySetting.ActivityName
, new GetUsers(humanSetting.ActionerRule.Scripts)
, activity.CustomActivityResult
, new Dictionary<string, Taobao.Activities.Statements.FlowNode>()
, null);
}
else if (activitySetting is ServerSetting)
{
var customSetting = activitySetting as CustomSetting;
var serverSetting = activitySetting as ServerSetting;
//创建自动节点
var resultTo = activity.Variables.ToList().FirstOrDefault(o => o.Name == serverSetting.ResultTo);
flowStep = WorkflowBuilder.CreateServer(activitySetting
, activitySetting.ActivityName
, serverSetting.Script
, customSetting.FinishRule.Scripts
, resultTo != null ? (Variable<string>)resultTo : null
, activity.CustomActivityResult
, new Dictionary<string, Taobao.Activities.Statements.FlowNode>()
, null);
}
flowNodes.Add(wf_FlowSwitch.GetHashCode(), new FlowNodeInfo() { WF_FlowNode = wf_FlowSwitch, FlowStep = flowStep });
}
else if (wf_node is System.Activities.Statements.FlowStep)
{
var wf_FlowStep = wf_node as System.Activities.Statements.FlowStep;
if (typeof(System.Activities.Statements.Parallel).IsAssignableFrom(wf_FlowStep.Action.GetType()))
{
IList<Custom> customs = new List<Custom>();
var wf_Parallel = wf_FlowStep.Action as System.Activities.Statements.Parallel;
foreach (var wf_Activity in wf_Parallel.Branches)
{
if (typeof(ICustom).IsAssignableFrom(wf_Activity.GetType()))
{
var expression = (wf_Activity as ICustom).DisplayName;
if (string.IsNullOrEmpty(expression))
throw new Exception(@"流程中包括名称为空的节点，请检查！");
var activityName = ParseActivityName(expression);
if (temp.Contains(activityName))
throw new InvalidOperationException("流程中包括重复名称的节点，请检查！");
temp.Add(activityName);
var activitySetting = activitySettings.FirstOrDefault(o => o.ActivityName == activityName);
if (activitySetting == null)
throw new Exception(string.Format(@"解析出错，找不到名称为“{0}”的ActivitySetting", activityName));
if (activitySetting is HumanSetting)
{
var humanSetting = activitySetting as HumanSetting;
var human = WorkflowBuilder.CreateHuman(activitySetting
, activitySetting.ActivityName
, new GetUsers(humanSetting.ActionerRule.Scripts)
, activity.CustomActivityResult);
customs.Add(human);
}
else if (activitySetting is ServerSetting)
{
var customSetting = activitySetting as CustomSetting;
var serverSetting = activitySetting as ServerSetting;
var resultTo = activity.Variables.ToList().FirstOrDefault(o => o.Name == serverSetting.ResultTo);
var server = WorkflowBuilder.CreateServer(activitySetting
, activitySetting.ActivityName
, serverSetting.Script
, customSetting.FinishRule.Scripts
, resultTo != null ? (Variable<string>)resultTo : null
, activity.CustomActivityResult);
customs.Add(server);
}
}
}
var p_expression = wf_Parallel.DisplayName;
if (string.IsNullOrEmpty(p_expression))
throw new Exception(@"流程中包括名称为空的节点，请检查！");
var p_activityName = ParseActivityName(p_expression);
if (temp.Contains(p_activityName))
throw new InvalidOperationException("流程中包括重复名称的节点，请检查！");
temp.Add(p_activityName);
var p_activitySetting = activitySettings.FirstOrDefault(o => o.ActivityName == p_activityName);
if (p_activitySetting == null)
throw new Exception(string.Format(@"解析出错，找不到名称为“{0}”的ActivitySetting", p_activityName));
var flowStep = WorkflowBuilder.CreateParallel(p_activitySetting
, p_activitySetting.ActivityName
, (p_activitySetting as ParallelSetting).CompletionCondition
, null
, customs.ToArray());
flowNodes.Add(wf_FlowStep.GetHashCode(), new FlowNodeInfo() { WF_FlowNode = wf_FlowStep, FlowStep = flowStep });
}
}
}
var flowNode = flowchart.StartNode;
if (flowNode == null)
throw new InvalidOperationException("不包括StartNode开始节点");
//创建流程节点
BuildFlowNode(flowNode, flowNodes, flowLines, 0);
//将节点树连接到NTFE
activity.Body.StartNode = flowNodes[flowNode.GetHashCode()].FlowStep;
//初始化Flowchart节点的元素
if (isCacheMetaData)
CacheMetadata(activity.Body);
return activity;
}
string IWorkflowConverter.Parse(WorkflowActivity activity, string originalWorkflowDefinition)
{
return null;
}
//设置变量集合
private void SetVariablesForActivity(List<XElement> variableElments
, WorkflowActivity activity)
{
foreach (var variableElment in variableElments)
{
//当变量为设计器变量时跳过
if (variableElment.Attribute("Mode") != null && variableElment.Attribute("Mode").Value.Trim() == "design")
continue;
var variableName = variableElment.Attribute("Name").Value;
//判断变量名称是否合法
if (Regex.IsMatch(variableName, @"[a-zA-Z][a-zA-Z_0-9]*"))
activity.Variables.Add(new Taobao.Activities.Variable<String>(variableName));
}
}
string IWorkflowConverter.Parse(WorkflowActivity activity, string originalWorkflowDefinition)
{
if (activity == null)
throw new ArgumentException("activity is null.");
#region 记录位置信息
//判断原始格式是否是Xaml格式
var isXaml = this.CheckIsXamlFormat(originalWorkflowDefinition);
var location_dict = new Dictionary<string, string>();
IList<XElement> designVariableElements = new List<XElement>();
var element = XElement.Parse(originalWorkflowDefinition);
if (isXaml)
{
var elements = element.DescendantNodes()
.Select(o => o as XElement)
.Where(o => o != null);
//解析活动节点
var activityNode_elements = elements.Where(o => o.Name.LocalName == "FlowSwitch"
|| o.Name.LocalName == "FlowStep").ToList();
foreach (var activityNode_element in activityNode_elements)
{
var viewState_element = activityNode_element.Nodes()
.Select(o => o as XElement)
.Where(o => o.Name.LocalName == "WorkflowViewStateService.ViewState")
.FirstOrDefault();
var point_element = viewState_element.DescendantNodes()
.Select(o => o as XElement)
.Where(o => o != null && o.Name.LocalName == "Point")
.FirstOrDefault();
string parallelName = "";
if (activityNode_element.Name.LocalName == "FlowStep")
{
var activityNode_element_nodes = activityNode_element.Nodes().Select(o => o as XElement).Where(o => o != null).ToList();
//获取并行容器节点
var parallel_element = activityNode_element_nodes.FirstOrDefault(o => o.Name.LocalName == "Parallel");
if (parallel_element != null)
{
parallelName = parallel_element.Attribute("DisplayName").Value;
}
}
//设置位置信息
location_dict[activityNode_element.Name.LocalName == "FlowSwitch"
? ReplaceExpression(activityNode_element.Attribute("Expression").Value)
: parallelName] = point_element.Value.Replace(",", " ");
}
//UNDONE:目前WF4格式以及originalWorkflowDefinition无法得到设计器变量
}
else
{
var nodeDataElements = element.Descendants("NodeData")
.Where(o => o.Attribute("Category").Value != "Comment")
.ToList();
foreach (var nodeDataElement in nodeDataElements)
{
var category = nodeDataElement.Attribute("Category").Value;
if (category == "HumanPar" || category == "ServerPar" || category == "ChildPar")
continue;
var activityName = nodeDataElement.Attribute("Text").Value;
var location = nodeDataElement.Attribute("Location") != null ? nodeDataElement.Attribute("Location").Value : "308 0";
//设置位置信息
location_dict[activityName] = location;
}
//获取设计器变量
var variableElements = element.Descendants("Variable");
variableElements.Where(o => o.Attribute("Mode").Value.ToLower() == "design").ToList().ForEach(o =>
{
designVariableElements.Add(new XElement("Variable"
, new XAttribute("Name", o.Attribute("Name").Value)
, new XAttribute("Value", o.Attribute("Value").Value)
, new XAttribute("Mode", "design")));
});
}
#endregion
var root = new XElement("FlowChart");
var variablesElement = new XElement("Variables");
//添加变量节点
foreach (var variable in activity.Variables)
variablesElement.Add(new XElement("Variable"
, new XAttribute("Name", variable.Name)
, new XAttribute("Value", "")
, new XAttribute("Mode", "flow")));
//遍历添加设计器变量
foreach (var variable in designVariableElements)
variablesElement.Add(variable);
root.Add(variablesElement);
//添加开始节点
root.Add(new XElement("NodeData"
, new XAttribute("Key", "Start")
, new XAttribute("Category", "Start")
, new XAttribute("Location", location_dict.ContainsKey("Start") ? location_dict["Start"] : "308 0")
, new XAttribute("Text", "Start")));
var dict = new Dictionary<Taobao.Activities.Statements.FlowStep, string>();
int counter = 0;
foreach (var node in activity.Body.Nodes)
{
if (node is Taobao.Activities.Statements.FlowStep)
{
var flowStep = node as Taobao.Activities.Statements.FlowStep;
//判断节点是否为NTFE-BPM平行节点
if(flowStep.Action is Taobao.Workflow.Activities.Statements.CustomParallel)
{
var parallel = flowStep.Action as Taobao.Workflow.Activities.Statements.CustomParallel;
int parallel_counter = counter;
var parallel_key = _activityidPrefix + (counter++);
//构造平行容器类型节点
root.Add(new XElement("NodeData"
, new XAttribute("Key", parallel_key)
, new XAttribute("Category", "ParallelContainer")
, new XAttribute("IsSubGraph", true)
, new XAttribute("Location", location_dict.ContainsKey(parallel.DisplayName)
? location_dict[parallel.DisplayName] : "600 0")
, new XAttribute("Text", parallel.DisplayName)));
int[] array = location_dict.ContainsKey(parallel.DisplayName)
? location_dict[parallel.DisplayName].Split(' ').Select(o => Convert.ToInt32(o)).ToArray() : new int[] { 600, 0 };
dict.Add(flowStep, parallel_key);
int c = 0;
//遍历分支
foreach(var p_activity in parallel.Branches)
{
if (p_activity is Taobao.Workflow.Activities.Statements.Human)
{
var p_human = p_activity as Taobao.Workflow.Activities.Statements.Human;
//构造平行容器中的人工节点
root.Add(new XElement("NodeData"
, new XAttribute("Key", _activityidPrefix + (counter++))
, new XAttribute("Category", "HumanPar")
, new XAttribute("IsSubGraph", true)
, new XAttribute("SubGraphKey", _activityidPrefix + parallel_counter)
, new XAttribute("Location", (array[0] + (c++) * 105) + " " + array[1])
, new XAttribute("Text", p_human.DisplayName)));
}
else if (p_activity is Taobao.Workflow.Activities.Statements.Server)
{
var p_server = p_activity as Taobao.Workflow.Activities.Statements.Server;
//构造平行容器中的自动节点
root.Add(new XElement("NodeData"
, new XAttribute("Key", _activityidPrefix + (counter++))
, new XAttribute("Category", "ServerPar")
, new XAttribute("IsSubGraph", true)
, new XAttribute("SubGraphKey", _activityidPrefix + parallel_counter)
, new XAttribute("Location", (array[0] + (c++) * 105) + " " + array[1])
, new XAttribute("Text", p_server.DisplayName)));
}
else if (p_activity is Taobao.Workflow.Activities.Statements.SubProcess)
{
var p_subProcess = p_activity as Taobao.Workflow.Activities.Statements.SubProcess;
//构造平行容器中的子流程节点
root.Add(new XElement("NodeData"
, new XAttribute("Key", _activityidPrefix + (counter++))
, new XAttribute("Category", "ChildPar")
, new XAttribute("IsSubGraph", true)
, new XAttribute("SubGraphKey", _activityidPrefix + parallel_counter)
, new XAttribute("Location", (array[0] + (c++) * 105) + " " + array[1])
, new XAttribute("Text", p_subProcess.DisplayName)));
}
}
}
else if (flowStep.Action is Taobao.Workflow.Activities.Statements.Human)
{
var human = flowStep.Action as Taobao.Workflow.Activities.Statements.Human;
var key = _activityidPrefix + (counter++);
//构造人工节点
root.Add(new XElement("NodeData"
, new XAttribute("Key", key)
, new XAttribute("Category", "Human")
, new XAttribute("IsSubGraph", true)
, new XAttribute("Location", location_dict.ContainsKey(human.DisplayName)
? location_dict[human.DisplayName] : "600 0")
, new XAttribute("Text", human.DisplayName)));
dict.Add(flowStep, key);
}
else if (flowStep.Action is Taobao.Workflow.Activities.Statements.Server)
{
var server = flowStep.Action as Taobao.Workflow.Activities.Statements.Server;
var key = _activityidPrefix + (counter++);
//构造自动节点
root.Add(new XElement("NodeData"
, new XAttribute("Key", key)
, new XAttribute("Category", "Server")
, new XAttribute("IsSubGraph", true)
, new XAttribute("Location", location_dict.ContainsKey(server.DisplayName)
? location_dict[server.DisplayName] : "600 0")
, new XAttribute("Text", server.DisplayName)));
dict.Add(flowStep, key);
}
else if (flowStep.Action is Taobao.Workflow.Activities.Statements.SubProcess)
{
var subProcess = flowStep.Action as Taobao.Workflow.Activities.Statements.SubProcess;
var key = _activityidPrefix + (counter++);
//构造子流程节点
root.Add(new XElement("NodeData"
, new XAttribute("Key", key)
, new XAttribute("Category", "Child")
, new XAttribute("IsSubGraph", true)
, new XAttribute("Location", location_dict.ContainsKey(subProcess.DisplayName)
? location_dict[subProcess.DisplayName] : "600 0")
, new XAttribute("Text", subProcess.DisplayName)));
dict.Add(flowStep, key);
}
}
}
if (activity.Body.StartNode != null
&& activity.Body.StartNode is Taobao.Activities.Statements.FlowStep)
{
var startFlowStep = activity.Body.StartNode as Taobao.Activities.Statements.FlowStep;
var toKey = dict[startFlowStep];
//构造开始连线
root.Add(new XElement("LinkData"
, new XAttribute("From", "Start")
, new XAttribute("To", toKey)
, new XAttribute("IsDefault", true)));
}
foreach (var node in activity.Body.Nodes)
{
if (node is Taobao.Activities.Statements.FlowStep)
{
var flowStep = node as Taobao.Activities.Statements.FlowStep;
var fromKey = dict[flowStep];
if (flowStep.Next != null)
{
var flowSwitch = flowStep.Next as Taobao.Activities.Statements.FlowSwitch<string>;
foreach (var caseNode in flowSwitch.Cases)
{
var linkText = caseNode.Key;
if (caseNode.Value is Taobao.Activities.Statements.FlowStep)
{
var caseFlowStep = caseNode.Value as Taobao.Activities.Statements.FlowStep;
var toKey = dict[caseFlowStep];
//构造case连线
root.Add(new XElement("LinkData"
, new XAttribute("From", fromKey)
, new XAttribute("To", toKey)
, new XAttribute("Text", linkText)
, new XAttribute("IsDefault", false)));
}
}
if (flowSwitch.Default != null
&& flowSwitch.Default is Taobao.Activities.Statements.FlowStep)
{
var defaultFlowStep = flowSwitch.Default as Taobao.Activities.Statements.FlowStep;
var toKey = dict[defaultFlowStep];
//构造默认连线
root.Add(new XElement("LinkData"
, new XAttribute("From", fromKey)
, new XAttribute("To", toKey)
, new XAttribute("Text", "Default")
, new XAttribute("IsDefault", true)));
}
}
}
}
return root.ToString();
}
//通过Flowchart节点和自定义活动列表解析NTFE-BPM活动树
private Taobao.Workflow.Activities.Statements.WorkflowActivity ParseWorkflowActivity(XElement root
, IList<ActivitySetting> activitySettings
, bool isCacheMetaData)
{
var activity = new WorkflowActivity();
var variableElements = root.Descendants("Variable").ToList();
//设置变量集合
this.SetVariablesForActivity(variableElements, activity);
var nodeDataElements = root.Descendants("NodeData")
.Where(o => o.Attribute("Category").Value != "Comment")
.ToList();
var linkDataElements = root.Descendants("LinkData").ToList();
var flowNodes = new Dictionary<string, FlowNodeInfo>(); //定义点集合
var temp = new List<string>();
foreach (var nodeDataElement in nodeDataElements)
{
var category = nodeDataElement.Attribute("Category").Value;
if (category == "HumanPar" || category == "ServerPar" || category == "ChildPar" || category == "Start")
continue;
var activityName = nodeDataElement.Attribute("Text").Value;
var key = nodeDataElement.Attribute("Key").Value;
if (temp.Contains(activityName))
throw new InvalidOperationException("流程中包括重复名称的节点，请检查！");
temp.Add(activityName);
var activitySetting = activitySettings.FirstOrDefault(o => o.ActivityName == activityName);
if (activitySetting == null)
throw new Exception(string.Format(@"解析出错，找不到名称为“{0}”的ActivitySetting", activityName));
Taobao.Activities.Statements.FlowStep flowStep = null;
if (activitySetting is HumanSetting)
{
var humanSetting = activitySetting as HumanSetting;
//创建人工节点
flowStep = WorkflowBuilder.CreateHuman(activitySetting
, activitySetting.ActivityName
, new GetUsers(humanSetting.ActionerRule.Scripts)
, activity.CustomActivityResult
, new Dictionary<string, Taobao.Activities.Statements.FlowNode>()
, null);
}
else if (activitySetting is ServerSetting)
{
var customSetting = activitySetting as CustomSetting;
var serverSetting = activitySetting as ServerSetting;
var resultTo = activity.Variables.ToList().FirstOrDefault(o => o.Name == serverSetting.ResultTo);
//创建人工节点
flowStep = WorkflowBuilder.CreateServer(activitySetting
, activitySetting.ActivityName
, serverSetting.Script
, customSetting.FinishRule.Scripts
, resultTo != null ? (Variable<string>)resultTo : null
, activity.CustomActivityResult
, new Dictionary<string, Taobao.Activities.Statements.FlowNode>()
, null);
}
else if (activitySetting is SubProcessSetting)
{
var customSetting = activitySetting as CustomSetting;
var subProcessSetting = activitySetting as SubProcessSetting;
//创建子流程节点
flowStep = WorkflowBuilder.CreateSubProcess(activitySetting
, activitySetting.ActivityName
, customSetting.FinishRule.Scripts
, activity.CustomActivityResult
, new Dictionary<string, Taobao.Activities.Statements.FlowNode>()
, null);
}
else if (activitySetting is ParallelSetting)
{
IList<Custom> customs = new List<Custom>();
//遍历customs
var customParElements = nodeDataElements.Where(o => o.Attribute("SubGraphKey") != null && o.Attribute("SubGraphKey").Value == key).ToList();
foreach (var customParElement in customParElements)
{
var customeCategory = customParElement.Attribute("Category").Value;
var customeActivityName = customParElement.Attribute("Text").Value;
if (temp.Contains(customeActivityName))
throw new InvalidOperationException("流程中包括重复名称的节点，请检查！");
temp.Add(customeActivityName);
var customActivitySetting = activitySettings.FirstOrDefault(o => o.ActivityName == customeActivityName);
if (customActivitySetting == null)
throw new Exception(string.Format(@"解析出错，找不到名称为“{0}”的ActivitySetting", customeActivityName));
if (customActivitySetting is HumanSetting)
{
var humanSetting = customActivitySetting as HumanSetting;
//创建并行容器中人工节点
var human = WorkflowBuilder.CreateHuman(customActivitySetting
, customActivitySetting.ActivityName
, new GetUsers(humanSetting.ActionerRule.Scripts)
, activity.CustomActivityResult);
customs.Add(human);
}
else if (customActivitySetting is ServerSetting)
{
var customSetting = customActivitySetting as CustomSetting;
var serverSetting = customActivitySetting as ServerSetting;
var resultTo = activity.Variables.ToList().FirstOrDefault(o => o.Name == serverSetting.ResultTo);
//创建并行容器中自动节点
var server = WorkflowBuilder.CreateServer(customActivitySetting
, customActivitySetting.ActivityName
, serverSetting.Script
, customSetting.FinishRule.Scripts
, resultTo != null ? (Variable<string>)resultTo : null
, activity.CustomActivityResult);
customs.Add(server);
}
else if (customActivitySetting is SubProcessSetting)
{
var customSetting = customActivitySetting as CustomSetting;
var subProcessSetting = customActivitySetting as SubProcessSetting;
//创建并行容器中子流程节点
var subprocess = WorkflowBuilder.CreateSubProcess(customActivitySetting
, customActivitySetting.ActivityName
, customSetting.FinishRule.Scripts
, activity.CustomActivityResult);
customs.Add(subprocess);
}
}
//创建并行容器节点
flowStep = WorkflowBuilder.CreateParallel(activitySetting
, activitySetting.ActivityName
, (activitySetting as ParallelSetting).CompletionCondition
, null
, customs.ToArray());
}
flowNodes.Add(key, new FlowNodeInfo() { FlowStep = flowStep });
}
if(nodeDataElements.Count(o => o.Attribute("Category").Value == "Start") != 1)
throw new InvalidOperationException("不包括Start开始节点");
//创建流程节点
this.BuildFlowNode(flowNodes, linkDataElements);
var startLinkElement = linkDataElements.FirstOrDefault(o => o.Attribute("From").Value == "Start");
if (startLinkElement == null)
throw new InvalidOperationException("不包含Start到初始点连线");
activity.Body.StartNode = flowNodes[startLinkElement.Attribute("To").Value].FlowStep;
//初始化Flowchart节点的元素
if (isCacheMetaData)
CacheMetadata(activity.Body);
return activity;
}
public override string Parse(WorkflowActivity workflowActivity, string originalWorkflowDefinition)
{
return Resource.WorkflowDefinition4;
}
