/// <summary>
/// Adds an edge between two nodes, saving its information in Page's Session
/// </summary>
/// <param name="wfID">The WF's ID</param>
/// <param name="fromNodeID">The edge's head</param>
/// <param name="toNodeID">The edge's tail</param>
/// <param name="edgeXML">The edge's XML value</param>
private void AddEdge(string wfID, string fromNodeID, string toNodeID, string edgeXML)
{
WFnode from = (WFnode)Page.Session[fromNodeID];
WFnode to = (WFnode)Page.Session[toNodeID];
if (from == null || to == null || from == to)
{
return;
}
XmlDocument edgeDocument = new XmlDocument();
edgeDocument.InnerXml = edgeXML;
//TOCHANGE
Workflow wf = (Workflow)Page.Session[wfID];
WFedgeLabel edge = wf.GetEdgeBetween(from, to);
if (edge != null)
{
try {
edge.ModifyPrecondition(edgeDocument);
}
catch (Exception e) {
callbackResult = e.Message;
}
}
else
{
edge = new WFedgeLabel(edgeDocument, null);
wf.AddEdge(edge, from, to);
}
}
/// <summary>
/// Receives client's call and adds an edge between 'Node id from' and 'Node id to'
/// </summary>
/// <param name="eventArgument">WorkflowId from client & Node id from & Node id to & Xml predicate</param>
public void RaiseCallbackEvent(string eventArgument)
{
string[] args = eventArgument.Split('&');
string workflowId = args[0];
string fromNodeNameCodified = args[1];
string toNodeNameCodified = args[2];
callbackResult = "OK";
Workflow wf = (Workflow)Page.Session[workflowId];
wf.WorkflowInvalidationEvent += new EventHandler <WorkflowValidationEventArgs>(wf_WorkflowInvalidationEvent);
WFedgeLabel edge = wf.GetEdgeBetween((WFnode)Page.Session[fromNodeNameCodified], (WFnode)Page.Session[toNodeNameCodified]);
wf.RemoveEdge(edge);
}
public IComputableWorkflow testValidationGUI()
{
WFnode nd1 = testNode1();
WFnode nd2 = testNode2();
WFedgeLabel edge = new WFedgeLabel();
XmlDocument d = new XmlDocument();
d.LoadXml("<PRECONDITIONS></PRECONDITIONS>");
edge.ModifyPrecondition(d);
Workflow wf = new Workflow("PIPPO");
wf.AddNode(nd1);
wf.AddNode(nd2);
wf.AddEdge(edge, nd1, nd2);
return(wf.Save());
}
