// creates a workflow application, binds parameters, links extensions and run it
public WorkflowApplication CreateAndRun(RequestForProposal rfp)
{
// input parameters for the WF program
IDictionary <string, object> inputs = new Dictionary <string, object>();
inputs.Add("Rfp", rfp);
// create and run the WF instance
Activity wf = new PurchaseProcessWorkflow();
WorkflowApplication instance = new WorkflowApplication(wf, inputs)
{
PersistableIdle = OnIdleAndPersistable,
Completed = OnWorkflowCompleted,
Idle = OnIdle
};
XmlWorkflowInstanceStore store = new XmlWorkflowInstanceStore(instance.Id);
instance.InstanceStore = store;
//Create the persistence Participant and add it to the workflow instance
XmlPersistenceParticipant xmlPersistenceParticipant = new XmlPersistenceParticipant(instance.Id);
instance.Extensions.Add(xmlPersistenceParticipant);
// add a tracking participant
instance.Extensions.Add(new SaveAllEventsToTestFileTrackingParticipant());
// add instance to the host list of running instances
this.instances.Add(instance.Id, instance);
// continue executing this instance
instance.Run();
return(instance);
}
// creates a workflow application, binds parameters, links extensions and run it
public WorkflowApplication CreateAndRun(RequestForProposal rfp)
{
// input parameters for the WF program
IDictionary<string, object> inputs = new Dictionary<string, object>();
inputs.Add("Rfp", rfp);
// create and run the WF instance
Activity wf = new PurchaseProcessWorkflow();
WorkflowApplication instance = new WorkflowApplication(wf, inputs);
XmlWorkflowInstanceStore store = new XmlWorkflowInstanceStore(instance.Id);
instance.InstanceStore = store;
instance.PersistableIdle += OnIdleAndPersistable;
instance.Completed += OnWorkflowCompleted;
instance.Idle += OnIdle;
//Create the persistence Participant and add it to the workflow instance
XmlPersistenceParticipant xmlPersistenceParticipant = new XmlPersistenceParticipant(instance.Id);
instance.Extensions.Add(xmlPersistenceParticipant);
// add a tracking participant
instance.Extensions.Add(new SaveAllEventsToTestFileTrackingParticipant());
// add instance to the host list of running instances
this.instances.Add(instance.Id, instance);
// continue executing this instance
instance.Run();
return instance;
}
// serialize a Rfp to Xml using Linq to Xml
XElement SerializeRfp(RequestForProposal rfp, Guid instanceId)
{
// main body of the rfp
XElement ret =
new XElement("requestForProposal",
new XAttribute("id", instanceId.ToString()),
new XAttribute("status", rfp.Status),
new XElement("creationDate", rfp.CreationDate),
new XElement("completionDate", rfp.CompletionDate),
new XElement("title", rfp.Title),
new XElement("description", rfp.Description));
// add invited vendors
XElement invitedVendors = new XElement("invitedVendors");
foreach (Vendor vendor in rfp.InvitedVendors)
{
invitedVendors.Add(
new XElement("vendor",
new XAttribute("id", vendor.Id)));
}
ret.Add(invitedVendors);
// add vendor proposals
XElement vendorProposals = new XElement("vendorProposals");
foreach (VendorProposal proposal in rfp.VendorProposals.Values)
{
vendorProposals.Add(
new XElement("vendorProposal",
new XAttribute("vendorId", proposal.Vendor.Id),
new XAttribute("date", proposal.Date),
new XAttribute("value", proposal.Value)));
}
ret.Add(vendorProposals);
// add best proposal
if (rfp.BestProposal != null && rfp.BestProposal.Vendor != null)
{
ret.Add(
new XElement("bestProposal",
new XAttribute("vendorId", rfp.BestProposal.Vendor.Id),
new XAttribute("date", rfp.BestProposal.Date),
new XAttribute("value", rfp.BestProposal.Value)));
}
return(ret);
}
// create a new Rfp and launch the WF instance
private void btnCreate_Click(object sender, EventArgs e)
{
// create the RFP
RequestForProposal rfp = new RequestForProposal();
rfp.Title = this.txtTitle.Text;
rfp.Description = this.txtDescription.Text;
foreach (Vendor vendor in chkVendors.CheckedItems)
{
rfp.InvitedVendors.Add(vendor);
}
// create the proposal within the host
this.PurchaseProcessHost.CreateAndRun(rfp);
// show final message
this.Hide();
}
// map a Request for Proposal from a Linq to Xml XElement
static RequestForProposal MapFrom(XElement elem)
{
RequestForProposal rfp = new RequestForProposal();
rfp.ID = new Guid(elem.Attribute("id").Value);
rfp.Status = elem.Attribute("status").Value;
rfp.Title = elem.Element("title").Value;
rfp.Description = elem.Element("description").Value;
rfp.CreationDate = DateTime.Parse(elem.Element("creationDate").Value, new CultureInfo("EN-us"));
if (elem.Element("completionDate") != null)
{
rfp.CompletionDate = DateTime.Parse(elem.Element("completionDate").Value, new CultureInfo("EN-us"));
}
// invited vendors
foreach (XElement vendorElem in elem.Element("invitedVendors").Elements("vendor"))
{
Vendor vendor = VendorRepository.Retrieve(Convert.ToInt32(vendorElem.Attribute("id").Value, new CultureInfo("EN-us")));
rfp.InvitedVendors.Add(vendor);
}
// map received proposals in the list
foreach (var proposal in elem.Element("vendorProposals").Elements("vendorProposal"))
{
Vendor vendor = VendorRepository.Retrieve(int.Parse(proposal.Attribute("vendorId").Value, new CultureInfo("EN-us")));
VendorProposal vendorProposal = new VendorProposal(vendor);
vendorProposal.Value = double.Parse(proposal.Attribute("value").Value, new CultureInfo("EN-us"));
vendorProposal.Date = DateTime.Parse(proposal.Attribute("date").Value, new CultureInfo("EN-us"));
rfp.VendorProposals.Add(vendor.Id, vendorProposal);
}
// map best proposal
if (elem.Element("bestProposal") != null)
{
Vendor bestVendor = VendorRepository.Retrieve(Convert.ToInt32(elem.Element("bestProposal").Attribute("vendorId").Value, new CultureInfo("EN-us")));
rfp.BestProposal = new VendorProposal(bestVendor);
rfp.BestProposal.Value = double.Parse(elem.Element("bestProposal").Attribute("value").Value, new CultureInfo("EN-us"));
rfp.BestProposal.Date = DateTime.Parse(elem.Element("bestProposal").Attribute("date").Value, new CultureInfo("EN-us"));
}
return(rfp);
}
// map a Request for Proposal from a Linq to Xml XElement
static RequestForProposal MapFrom(XElement elem)
{
RequestForProposal rfp = new RequestForProposal();
rfp.ID = new Guid(elem.Attribute("id").Value);
rfp.Status = elem.Attribute("status").Value;
rfp.Title = elem.Element("title").Value;
rfp.Description = elem.Element("description").Value;
rfp.CreationDate = DateTime.Parse(elem.Element("creationDate").Value, new CultureInfo("EN-us"));
if (elem.Element("completionDate") != null)
rfp.CompletionDate = DateTime.Parse(elem.Element("completionDate").Value, new CultureInfo("EN-us"));
// invited vendors
foreach (XElement vendorElem in elem.Element("invitedVendors").Elements("vendor"))
{
Vendor vendor = VendorRepository.Retrieve(Convert.ToInt32(vendorElem.Attribute("id").Value, new CultureInfo("EN-us")));
rfp.InvitedVendors.Add(vendor);
}
// map received proposals in the list
foreach (var proposal in elem.Element("vendorProposals").Elements("vendorProposal"))
{
Vendor vendor = VendorRepository.Retrieve(int.Parse(proposal.Attribute("vendorId").Value, new CultureInfo("EN-us")));
VendorProposal vendorProposal = new VendorProposal(vendor);
vendorProposal.Value = double.Parse(proposal.Attribute("value").Value, new CultureInfo("EN-us"));
vendorProposal.Date = DateTime.Parse(proposal.Attribute("date").Value, new CultureInfo("EN-us"));
rfp.VendorProposals.Add(vendor.Id, vendorProposal);
}
// map best proposal
if (elem.Element("bestProposal") != null)
{
Vendor bestVendor = VendorRepository.Retrieve(Convert.ToInt32(elem.Element("bestProposal").Attribute("vendorId").Value, new CultureInfo("EN-us")));
rfp.BestProposal = new VendorProposal(bestVendor);
rfp.BestProposal.Value = double.Parse(elem.Element("bestProposal").Attribute("value").Value, new CultureInfo("EN-us"));
rfp.BestProposal.Date = DateTime.Parse(elem.Element("bestProposal").Attribute("date").Value, new CultureInfo("EN-us"));
}
return rfp;
}
// serialize a Rfp to Xml using Linq to Xml
XElement SerializeRfp(RequestForProposal rfp, Guid instanceId)
{
// main body of the rfp
XElement ret =
new XElement("requestForProposal",
new XAttribute("id", instanceId.ToString()),
new XAttribute("status", rfp.Status),
new XElement("creationDate", rfp.CreationDate),
new XElement("completionDate", rfp.CompletionDate),
new XElement("title", rfp.Title),
new XElement("description", rfp.Description));
// add invited vendors
XElement invitedVendors = new XElement("invitedVendors");
foreach (Vendor vendor in rfp.InvitedVendors)
{
invitedVendors.Add(
new XElement("vendor",
new XAttribute("id", vendor.Id)));
}
ret.Add(invitedVendors);
// add vendor proposals
XElement vendorProposals = new XElement("vendorProposals");
foreach (VendorProposal proposal in rfp.VendorProposals.Values)
{
vendorProposals.Add(
new XElement("vendorProposal",
new XAttribute("vendorId", proposal.Vendor.Id),
new XAttribute("date", proposal.Date),
new XAttribute("value", proposal.Value)));
}
ret.Add(vendorProposals);
// add best proposal
if (rfp.BestProposal != null && rfp.BestProposal.Vendor != null)
{
ret.Add(
new XElement("bestProposal",
new XAttribute("vendorId", rfp.BestProposal.Vendor.Id),
new XAttribute("date", rfp.BestProposal.Date),
new XAttribute("value", rfp.BestProposal.Value)));
}
return ret;
}
//Implementations of MapValues are given all the values collected from all participants’ implementations of CollectValues
protected override IDictionary <XName, object> MapValues(IDictionary <XName, object> readWriteValues, IDictionary <XName, object> writeOnlyValues)
{
XName statusXname = XName.Get("Status", propertiesNamespace);
IDictionary <XName, object> mappedValues = base.MapValues(readWriteValues, writeOnlyValues);
RequestForProposal requestForProposal = null;
string status = string.Empty;
object value = null;
//retrieve the status of the workflow
if (writeOnlyValues.TryGetValue(statusXname, out value))
{
status = (string)value;
}
//retrieve the RequestForProposal object
foreach (KeyValuePair <System.Xml.Linq.XName, object> item in writeOnlyValues)
{
if (item.Value is LocationInfo)
{
LocationInfo li = (LocationInfo)item.Value;
if (li.Value is RequestForProposal)
{
requestForProposal = (RequestForProposal)li.Value;
}
}
}
IOHelper.EnsureAllRfpFileExists();
// load the document
XElement doc = XElement.Load(IOHelper.GetAllRfpsFileName());
IEnumerable <XElement> current =
from r in doc.Elements("requestForProposal")
where r.Attribute("id").Value.Equals(Id.ToString())
select r;
if (status == "Closed")
{
// erase nodes for the current rfp
foreach (XElement xe in current)
{
xe.Attribute("status").Value = "finished";
}
}
else
{
// erase nodes for the current rfp
foreach (XElement xe in current)
{
xe.Remove();
}
// get the Xml version of the Rfp, add it to the document and save it
if (requestForProposal != null)
{
XElement e = SerializeRfp(requestForProposal, Id);
doc.Add(e);
}
}
doc.Save(IOHelper.GetAllRfpsFileName());
return(mappedValues);
}