static CorrelationQuery CreateCorrelationQueryCore(MessageQuerySet select, Collection <CorrelationInitializer> correlationInitializers)
{
CorrelationQuery correlationQuery = null;
if (select != null)
{
Fx.Assert(select.Count != 0, "Empty MessageQuerySet is not allowed!");
correlationQuery = new CorrelationQuery
{
Select = select
};
}
if (correlationInitializers != null && correlationInitializers.Count > 0)
{
foreach (CorrelationInitializer correlation in correlationInitializers)
{
QueryCorrelationInitializer queryCorrelation = correlation as QueryCorrelationInitializer;
if (queryCorrelation != null)
{
Fx.Assert(queryCorrelation.MessageQuerySet.Count != 0, "Empty MessageQuerySet is not allowed!");
correlationQuery = correlationQuery ?? new CorrelationQuery();
correlationQuery.SelectAdditional.Add(queryCorrelation.MessageQuerySet);
}
}
}
return(correlationQuery);
}
// Wrapper code that encapsulates creating a simple message query for the purposes of the sample
static MessageQuerySet CreateMessageQuerySet(string query)
{
XPathMessageQuery xpathQuery = new XPathMessageQuery(query);
MessageQuerySet mqs = new MessageQuerySet();
mqs.Add("accountQuery", xpathQuery);
return(mqs);
}
public static CorrelationQuery CreateServerCorrelationQuery(MessageQuerySet select, Collection <CorrelationInitializer> correlationInitializers, OperationDescription operation, bool isResponse)
{
CorrelationQuery query = CreateCorrelationQueryCore(select, correlationInitializers);
if (query != null)
{
string str = !isResponse ? operation.Messages[0].Action : operation.Messages[1].Action;
CorrelationActionMessageFilter filter = new CorrelationActionMessageFilter {
Action = str
};
query.Where = filter;
}
return(query);
}
public static CorrelationQuery CreateServerCorrelationQuery(MessageQuerySet select, Collection <CorrelationInitializer> correlationInitializers,
OperationDescription operation, bool isResponse)
{
Fx.Assert(operation != null, "Argument cannot be null!");
CorrelationQuery correlationQuery = CreateCorrelationQueryCore(select, correlationInitializers);
if (correlationQuery != null)
{
string action = !isResponse ? operation.Messages[0].Action : operation.Messages[1].Action;
correlationQuery.Where = new CorrelationActionMessageFilter {
Action = action
};
}
return(correlationQuery);
}
/// <summary>
/// Generate the correlation hash
/// </summary>
/// <returns>MessageQuerySet</returns>
private MessageQuerySet CreateCorrelationQuery()
{
var xpath = new XPathMessageQuery
{
Namespaces = new XmlNamespaceManager(new NameTable()),
Expression = "//sample:WorkflowId"
};
xpath.Namespaces.AddNamespace("sample", MessageNamespace);
var messageQuerySet = new MessageQuerySet
{
Name = "RequestCorrelation"
};
messageQuerySet.Add("WorkflowId", xpath);
return(messageQuerySet);
}
private static CorrelationQuery CreateDefaultCorrelationQuery(CorrelationQuery query, string action, CorrelationDataDescription data, ref bool shouldPreserveMessage)
{
XPathMessageQuery query5 = new XPathMessageQuery {
Expression = string.Format(CultureInfo.InvariantCulture, "sm:correlation-data('{0}')", new object[] { data.Name }),
Namespaces = new XPathMessageContext()
};
MessageQuery query2 = query5;
if (data.IsOptional)
{
OptionalMessageQuery query3 = new OptionalMessageQuery {
Query = query2
};
query2 = query3;
}
if (query == null)
{
MessageFilter filter;
bool flag = data.Name == "wsc-instanceId";
if (!shouldPreserveMessage && !flag)
{
shouldPreserveMessage = true;
}
if (action == "*")
{
filter = new MatchAllMessageFilter();
}
else
{
filter = new ActionMessageFilter(new string[] { action });
}
CorrelationQuery query4 = new CorrelationQuery {
Where = filter,
IsDefaultContextQuery = flag
};
MessageQuerySet set = new MessageQuerySet();
set.Add(data.Name, query2);
query4.Select = set;
return(query4);
}
query.Select[data.Name] = query2;
return(query);
}
// this method generates the correlationQuery for client side send and receiveReply
public static Collection <CorrelationQuery> CreateClientCorrelationQueries(MessageQuerySet select, Collection <CorrelationInitializer> correlationInitializers,
string overridingAction, XName serviceContractName, string operationName, bool isResponse)
{
Fx.Assert(serviceContractName != null && operationName != null, "Argument cannot be null!");
Collection <CorrelationQuery> queryCollection = new Collection <CorrelationQuery>();
CorrelationQuery correlationQuery = CreateCorrelationQueryCore(select, correlationInitializers);
if (correlationQuery != null)
{
if (overridingAction != null)
{
correlationQuery.Where = new CorrelationActionMessageFilter {
Action = overridingAction
};
}
else
{
ProvideDefaultNamespace(ref serviceContractName);
string defaultAction = NamingHelper.GetMessageAction(new XmlQualifiedName(serviceContractName.LocalName, serviceContractName.NamespaceName),
operationName, null, isResponse);
correlationQuery.Where = new CorrelationActionMessageFilter {
Action = defaultAction
};
}
queryCollection.Add(correlationQuery);
if (isResponse)
{
// we need an additional query with empty action to support soap1.1 reply cases
CorrelationQuery noActionQuery = correlationQuery.Clone();
noActionQuery.Where = new CorrelationActionMessageFilter {
Action = String.Empty
};
queryCollection.Add(noActionQuery);
}
}
return(queryCollection);
}
public static Collection <CorrelationQuery> CreateClientCorrelationQueries(MessageQuerySet select, Collection <CorrelationInitializer> correlationInitializers, string overridingAction, XName serviceContractName, string operationName, bool isResponse)
{
Collection <CorrelationQuery> collection = new Collection <CorrelationQuery>();
CorrelationQuery item = CreateCorrelationQueryCore(select, correlationInitializers);
if (item != null)
{
if (overridingAction != null)
{
CorrelationActionMessageFilter filter = new CorrelationActionMessageFilter {
Action = overridingAction
};
item.Where = filter;
}
else
{
ProvideDefaultNamespace(ref serviceContractName);
string str = NamingHelper.GetMessageAction(new XmlQualifiedName(serviceContractName.LocalName, serviceContractName.NamespaceName), operationName, null, isResponse);
CorrelationActionMessageFilter filter2 = new CorrelationActionMessageFilter {
Action = str
};
item.Where = filter2;
}
collection.Add(item);
if (isResponse)
{
CorrelationQuery query2 = item.Clone();
CorrelationActionMessageFilter filter3 = new CorrelationActionMessageFilter {
Action = string.Empty
};
query2.Where = filter3;
collection.Add(query2);
}
}
return(collection);
}
private static CorrelationQuery CreateCorrelationQueryCore(MessageQuerySet select, Collection <CorrelationInitializer> correlationInitializers)
{
CorrelationQuery query = null;
if (select != null)
{
query = new CorrelationQuery {
Select = select
};
}
if ((correlationInitializers != null) && (correlationInitializers.Count > 0))
{
foreach (CorrelationInitializer initializer in correlationInitializers)
{
QueryCorrelationInitializer initializer2 = initializer as QueryCorrelationInitializer;
if (initializer2 != null)
{
query = query ?? new CorrelationQuery();
query.SelectAdditional.Add(initializer2.MessageQuerySet);
}
}
}
return(query);
}
//Define the Workflow
static Activity ServerWorkflow()
{
Variable <string> correlationValue = new Variable <string>()
{
Name = "correlationID"
};
MessageQuerySet mqs = new MessageQuerySet()
{
{ "ch", new XPathMessageQuery("//ser:string", new XPathMessageContext()) },
};
Receive requestOne = new Receive
{
OperationName = "ScenarioOne",
ServiceContractName = Constants.ServiceContractName,
CanCreateInstance = true,
CorrelatesOn = mqs,
};
Receive requestTwo = new Receive
{
OperationName = "ScenarioTwo",
ServiceContractName = Constants.ServiceContractName,
CanCreateInstance = false,
CorrelatesOn = mqs,
};
return(new Sequence
{
Variables = { correlationValue },
Activities =
{
new WriteLine {
Text = "Begin Server Workflow. Begin Scenario One."
},
new TransactedReceiveScope
{
// Flow in transaction
Request = requestOne,
Body = new Sequence
{
Activities =
{
new WriteLine {
Text = "Begin Scenario One TransactedReceiveScope Body"
},
new SendReply {
Request = requestOne
},
new PrintTxInfo(),
// Inner TransactionScope scope joins the existing transaction
new TransactionScope
{
Body = new Sequence
{
Activities =
{
new WriteLine {
Text = "Begin Scenario One Inner TransactionScope Body"
},
new PrintTxInfo(),
new WriteLine {
Text = "End Scenario One Inner TransactionScope Body"
},
},
},
},
new PrintTxInfo(),
new WriteLine {
Text = "End Scenario One TransactedReceiveScope Body"
},
}
}
},
new WriteLine {
Text = "End Scenario One. Begin Scenario Two."
},
new TransactedReceiveScope
{
// Flow in transaction
Request = requestTwo,
Body = new Sequence
{
Activities =
{
new WriteLine {
Text = "Begin Scenario Two TransactedReceiveScope Body"
},
new SendReply {
Request = requestTwo
},
new PrintTxInfo(),
// Inner TransactionScope joins the existing transaction, but it sets a timeout for the work in its scope.
// If the timeout expires the entire transaction will be aborted.
new TransactionScope
{
Timeout = TimeSpan.FromSeconds(2),
Body = new Sequence
{
Activities =
{
new WriteLine {
Text = "Begin Scenario Two Inner TransactionScope Body"
},
new Delay {
Duration = TimeSpan.FromSeconds(5)
},
new PrintTxInfo(),
new WriteLine {
Text = "End Scenario Two Inner TransactionScope Body"
},
},
}
},
new PrintTxInfo(),
new WriteLine {
Text = "End Scenario Two TransactedReceiveScope Body"
},
},
},
},
new WriteLine {
Text = "End Scenario Two. End Server Workflow\n"
},
},
});
}
private static Activity GetPropertyWorkflow()
{
// Correlation handle used to link operations together
Variable <CorrelationHandle> operationHandle = new Variable <CorrelationHandle>();
// The generated property Id
Variable <Guid> propertyId = new Variable <Guid>();
// Variable used to indicate that the workflow should finish
Variable <bool> finished = new Variable <bool>("Finished", false);
Variable <string> address = new Variable <string>();
Variable <string> owner = new Variable <string>();
Variable <double> askingPrice = new Variable <double>();
// Initial receive - this kicks off the workflow
Receive receive = new Receive
{
CanCreateInstance = true,
OperationName = "UploadPropertyInformation",
ServiceContractName = XName.Get("IProperty", ns),
Content = new ReceiveParametersContent
{
Parameters =
{
{ "address", new OutArgument <string>(address) },
{ "owner", new OutArgument <string>(owner) },
{ "askingPrice", new OutArgument <double>(askingPrice) }
}
}
};
// Define the local namespace
XPathMessageContext messageContext = new XPathMessageContext();
messageContext.AddNamespace("local", ns);
// Extracts the guid sent back to the client on the initial response
MessageQuerySet extractGuid = new MessageQuerySet
{
{ "PropertyId", new XPathMessageQuery("sm:body()/ser:guid", messageContext) }
};
// Extracts the guid sent up with the property image
MessageQuerySet extractGuidFromUploadRoomInformation = new MessageQuerySet
{
{ "PropertyId", new XPathMessageQuery(@"sm:body()/local:UploadRoomInformation/local:propertyId", messageContext) }
};
// Receive used to indicate that the upload is complete
Receive receiveDetailsComplete = new Receive
{
OperationName = "DetailsComplete",
ServiceContractName = XName.Get("IProperty", ns),
CorrelatesWith = operationHandle,
CorrelatesOn = extractGuid,
Content = ReceiveContent.Create(new OutArgument <Guid>(propertyId))
};
Variable <string> roomName = new Variable <string>();
Variable <double> width = new Variable <double>();
Variable <double> depth = new Variable <double>();
// Receive room information
Receive receiveRoomInfo = new Receive
{
OperationName = "UploadRoomInformation",
ServiceContractName = XName.Get("IProperty", ns),
CorrelatesWith = operationHandle,
CorrelatesOn = extractGuidFromUploadRoomInformation,
Content = new ReceiveParametersContent
{
Parameters =
{
{ "propertyId", new OutArgument <Guid>() },
{ "roomName", new OutArgument <string>(roomName) },
{ "width", new OutArgument <double>(width) },
{ "depth", new OutArgument <double>(depth) },
}
}
};
return(new Sequence
{
Variables = { propertyId, operationHandle, finished, address, owner, askingPrice },
Activities =
{
receive,
new WriteLine {
Text = "Assigning a unique ID"
},
new Assign <Guid>
{
To = new OutArgument <Guid> (propertyId),
Value = new InArgument <Guid> (Guid.NewGuid())
},
new WriteLine {
Text = new InArgument <string> (env => string.Format("{0} is selling {1} for {2}.\r\nAssigned unique id {3}.",owner.Get(env), address.Get(env), askingPrice.Get(env), propertyId.Get(env)))
},
new SendReply
{
Request = receive,
Content = SendContent.Create(new InArgument <Guid> (env => propertyId.Get(env))),
CorrelationInitializers =
{
new QueryCorrelationInitializer
{
CorrelationHandle = operationHandle,
MessageQuerySet = extractGuid
}
}
},
new While
{
Condition = ExpressionServices.Convert <bool>(env => !finished.Get(env)),
Body = new Pick
{
Branches =
{
new PickBranch
{
Variables = { roomName, width,depth },
Trigger = receiveRoomInfo,
Action = new WriteLine{
Text = new InArgument <string> (env => string.Format("Room '{0}' uploaded, dimensions {1}W x {2}D",roomName.Get(env), width.Get(env), depth.Get(env)))
},
},
new PickBranch
{
Trigger = receiveDetailsComplete,
Action = new Sequence
{
Activities =
{
new Assign <bool>
{
To = new OutArgument <bool>(finished),
Value = new InArgument <bool>(true)
},
new WriteLine {
Text = "Property Details Complete"
}
}
}
}
}
}
},
new WriteLine {
Text = "Finished!"
}
}
});
}
public static Collection<CorrelationQuery> CreateClientCorrelationQueries(MessageQuerySet select, Collection<CorrelationInitializer> correlationInitializers, string overridingAction, XName serviceContractName, string operationName, bool isResponse)
{
Collection<CorrelationQuery> collection = new Collection<CorrelationQuery>();
CorrelationQuery item = CreateCorrelationQueryCore(select, correlationInitializers);
if (item != null)
{
if (overridingAction != null)
{
CorrelationActionMessageFilter filter = new CorrelationActionMessageFilter {
Action = overridingAction
};
item.Where = filter;
}
else
{
ProvideDefaultNamespace(ref serviceContractName);
string str = NamingHelper.GetMessageAction(new XmlQualifiedName(serviceContractName.LocalName, serviceContractName.NamespaceName), operationName, null, isResponse);
CorrelationActionMessageFilter filter2 = new CorrelationActionMessageFilter {
Action = str
};
item.Where = filter2;
}
collection.Add(item);
if (isResponse)
{
CorrelationQuery query2 = item.Clone();
CorrelationActionMessageFilter filter3 = new CorrelationActionMessageFilter {
Action = string.Empty
};
query2.Where = filter3;
collection.Add(query2);
}
}
return collection;
}
static WorkflowService GetService()
{
Variable <Customer> customer = new Variable <Customer>();
Variable <Order> order = new Variable <Order>();
Variable <string> drug = new Variable <string>();
Variable <double> adjustedCost = new Variable <double>();
Variable <int> percentagePaidByInsurance = new Variable <int>();
Variable <CorrelationHandle> customerHandle = new Variable <CorrelationHandle>();
Variable <CorrelationHandle> orderHandle = new Variable <CorrelationHandle>();
XPathMessageContext pathContext = new XPathMessageContext();
pathContext.AddNamespace("psns", Constants.PharmacyServiceNamespace);
// <Snippet2>
MessageQuerySet GetOrderQuerySet = new MessageQuerySet
{
{
"OrderID",
new XPathMessageQuery("//psns:Order/psns:OrderID", pathContext)
}
};
// </Snippet2>
MessageQuerySet GetOrderIDQuerySet = new MessageQuerySet
{
{
"OrderID",
new XPathMessageQuery("//ser:guid", pathContext)
}
};
MessageQuerySet customerQuerySet = new MessageQuerySet
{
{
"CustomerID",
new XPathMessageQuery("//psns:GetBaseCost/psns:Customer/psns:CustomerID", pathContext)
}
};
MessageQuerySet customerIDQuerySet = new MessageQuerySet
{
{
"CustomerID",
new XPathMessageQuery("//ser:guid", pathContext)
}
};
// This will use implicit correlation within the workflow using the WorkflowServiceHost's default CorrelationHandle
// <Snippet3>
Receive prescriptionRequest = new Receive
{
DisplayName = "Request Perscription",
OperationName = "GetBaseCost",
ServiceContractName = Constants.PharmacyServiceContractName,
CanCreateInstance = true,
//CorrelatesWith = customerHandle, -- add this line for explicit correlation
CorrelatesOn = customerQuerySet,
Content = new ReceiveParametersContent
{
Parameters =
{
{ "Customer", new OutArgument <Customer>(customer) },
{ "Drug", new OutArgument <string>(drug) },
}
}
};
// </Snippet3>
// This will use implicit correlation within the workflow using the WorkflowServiceHost's default CorrelationHandle
Receive GetInsurancePaymentPercentageRequest = new Receive
{
DisplayName = "Get Insurance Coverage",
ServiceContractName = Constants.PharmacyServiceContractName,
OperationName = "GetInsurancePaymentPercentage",
CanCreateInstance = true,
//CorrelatesWith = customerHandle, -- add this line for explicit correlation
CorrelatesOn = customerIDQuerySet,
Content = ReceiveContent.Create(new OutArgument <Guid>())
};
// This will explicitly correlate with the SendReply action after the prescriptionRequest using the OrderID (stored in the orderHandle)
Receive GetAdjustedCostRequest = new Receive
{
DisplayName = "Get Adjusted Cost",
OperationName = "GetAdjustedCost",
ServiceContractName = Constants.PharmacyServiceContractName,
CanCreateInstance = true,
CorrelatesOn = GetOrderIDQuerySet,
CorrelatesWith = orderHandle,
Content = ReceiveContent.Create(new OutArgument <Guid>())
};
Activity PrescriptonWorkflow = new Sequence()
{
Variables = { customer, order, drug, percentagePaidByInsurance, adjustedCost, customerHandle, orderHandle },
Activities =
{
new WriteLine
{
Text = "Beginning Workflow"
},
new Parallel
{
Branches =
{
new Sequence
{
Activities =
{
GetInsurancePaymentPercentageRequest,
new Assign <int>
{
To = new OutArgument <int>((e) => percentagePaidByInsurance.Get(e)),
Value = new InArgument <int>((e) => new Random().Next(0, 100))
},
new SendReply
{
DisplayName = "Return Percentage",
Request = GetInsurancePaymentPercentageRequest,
Content = SendContent.Create(new InArgument <int>((e) => percentagePaidByInsurance.Get(e)))
}
}
},
new Sequence
{
Activities =
{
prescriptionRequest,
new WriteLine
{
Text = new InArgument <string>(env => (string.Format("{0}, {1}\t{2}",customer.Get(env).LastName, customer.Get(env).FirstName, customer.Get(env).CustomerID.ToString())))
},
new Assign <Order>
{
To = new OutArgument <Order>(order),
Value = new InArgument <Order>((e) => new Order()
{
CustomerID = customer.Get(e).CustomerID,Drug = drug.Get(e), OrderID = Guid.NewGuid()
})
},
new WriteLine
{
Text = new InArgument <string>(env => (string.Format("OrderID: {0}",order.Get(env).OrderID.ToString())))
},
new Assign <int>
{
To = new OutArgument <int>((e) => order.Get(e).Cost),
Value = new InArgument <int>((e) => new Random().Next(20, 50))
},
// <Snippet0>
new SendReply
{
DisplayName = "Send Adjusted Cost",
Request = prescriptionRequest,
// Initialize the orderHandle using the MessageQuerySet to correlate with the final GetAdjustedCost request
CorrelationInitializers =
{
// <Snippet1>
new QueryCorrelationInitializer
{
CorrelationHandle = orderHandle,
MessageQuerySet = GetOrderQuerySet
}
// </Snippet1>
},
Content = SendContent.Create(new InArgument <Order>((e) => order.Get(e)))
}
// </Snippet0>
}
}
}
},
new Assign <double>
{
To = new OutArgument <double>((e) => adjustedCost.Get(e)),
Value = new InArgument <double>((e) => order.Get(e).Cost *(100 - percentagePaidByInsurance.Get(e)) * .01)
},
new WriteLine
{
Text = new InArgument <string>(env => (string.Format("Base Cost: ${0}", order.Get(env).Cost.ToString())))
},
new WriteLine
{
Text = new InArgument <string>(env => (string.Format("Insurance Coverage: {0}%", percentagePaidByInsurance.Get(env).ToString())))
},
new WriteLine
{
Text = new InArgument <string>(env => (string.Format("Adjusted Cost: ${0}", decimal.Round(Convert.ToDecimal(adjustedCost.Get(env)), 2))))
},
GetAdjustedCostRequest,
new SendReply
{
Request = GetAdjustedCostRequest,
Content = SendContent.Create(new InArgument <double>((e) => adjustedCost.Get(e)))
},
new WriteLine
{
Text = "Workflow Completed"
}
}
};
WorkflowService service = new WorkflowService
{
Name = "PharmacyService",
Body = PrescriptonWorkflow,
ConfigurationName = "PharmacyService"
};
return(service);
}
// Wrapper code that encapsulates creating a simple message query for the purposes of the sample
static MessageQuerySet CreateMessageQuerySet(string query)
{
XPathMessageQuery xpathQuery = new XPathMessageQuery(query);
MessageQuerySet mqs = new MessageQuerySet();
mqs.Add("accountQuery", xpathQuery);
return mqs;
}
//Define the Workflow
static Activity ServerWorkflow()
{
Variable<string> correlationValue = new Variable<string>() { Name = "correlationID" };
MessageQuerySet mqs = new MessageQuerySet()
{
{ "ch", new XPathMessageQuery("//ser:string", new XPathMessageContext()) },
};
Receive requestOne = new Receive
{
OperationName = "ScenarioOne",
ServiceContractName = Constants.ServiceContractName,
CanCreateInstance = true,
CorrelatesOn = mqs,
};
Receive requestTwo = new Receive
{
OperationName = "ScenarioTwo",
ServiceContractName = Constants.ServiceContractName,
CanCreateInstance = false,
CorrelatesOn = mqs,
};
return new Sequence
{
Variables = { correlationValue },
Activities =
{
new WriteLine { Text = "Begin Server Workflow. Begin Scenario One." },
new TransactedReceiveScope
{
// Flow in transaction
Request = requestOne,
Body = new Sequence
{
Activities =
{
new WriteLine { Text = "Begin Scenario One TransactedReceiveScope Body" },
new SendReply { Request = requestOne },
new PrintTxInfo(),
// Inner TransactionScope scope joins the existing transaction
new TransactionScope
{
Body = new Sequence
{
Activities =
{
new WriteLine { Text = "Begin Scenario One Inner TransactionScope Body" },
new PrintTxInfo(),
new WriteLine { Text = "End Scenario One Inner TransactionScope Body" },
},
},
},
new PrintTxInfo(),
new WriteLine { Text = "End Scenario One TransactedReceiveScope Body" },
}
}
},
new WriteLine { Text = "End Scenario One. Begin Scenario Two." },
new TransactedReceiveScope
{
// Flow in transaction
Request = requestTwo,
Body = new Sequence
{
Activities =
{
new WriteLine { Text = "Begin Scenario Two TransactedReceiveScope Body" },
new SendReply { Request = requestTwo },
new PrintTxInfo(),
// Inner TransactionScope joins the existing transaction, but it sets a timeout for the work in its scope.
// If the timeout expires the entire transaction will be aborted.
new TransactionScope
{
Timeout = TimeSpan.FromSeconds(2),
Body = new Sequence
{
Activities =
{
new WriteLine { Text = "Begin Scenario Two Inner TransactionScope Body" },
new Delay { Duration = TimeSpan.FromSeconds(5) },
new PrintTxInfo(),
new WriteLine { Text = "End Scenario Two Inner TransactionScope Body" },
},
}
},
new PrintTxInfo(),
new WriteLine { Text = "End Scenario Two TransactedReceiveScope Body" },
},
},
},
new WriteLine { Text = "End Scenario Two. End Server Workflow\n" },
},
};
}
private static CorrelationQuery CreateCorrelationQueryCore(MessageQuerySet select, Collection<CorrelationInitializer> correlationInitializers)
{
CorrelationQuery query = null;
if (select != null)
{
query = new CorrelationQuery {
Select = select
};
}
if ((correlationInitializers != null) && (correlationInitializers.Count > 0))
{
foreach (CorrelationInitializer initializer in correlationInitializers)
{
QueryCorrelationInitializer initializer2 = initializer as QueryCorrelationInitializer;
if (initializer2 != null)
{
query = query ?? new CorrelationQuery();
query.SelectAdditional.Add(initializer2.MessageQuerySet);
}
}
}
return query;
}
// this method generates the correlationQuery for client side send and receiveReply
public static Collection<CorrelationQuery> CreateClientCorrelationQueries(MessageQuerySet select, Collection<CorrelationInitializer> correlationInitializers,
string overridingAction, XName serviceContractName, string operationName, bool isResponse)
{
Fx.Assert(serviceContractName != null && operationName != null, "Argument cannot be null!");
Collection<CorrelationQuery> queryCollection = new Collection<CorrelationQuery>();
CorrelationQuery correlationQuery = CreateCorrelationQueryCore(select, correlationInitializers);
if (correlationQuery != null)
{
if (overridingAction != null)
{
correlationQuery.Where = new CorrelationActionMessageFilter { Action = overridingAction };
}
else
{
ProvideDefaultNamespace(ref serviceContractName);
string defaultAction = NamingHelper.GetMessageAction(new XmlQualifiedName(serviceContractName.LocalName, serviceContractName.NamespaceName),
operationName, null, isResponse);
correlationQuery.Where = new CorrelationActionMessageFilter { Action = defaultAction };
}
queryCollection.Add(correlationQuery);
if (isResponse)
{
// we need an additional query with empty action to support soap1.1 reply cases
CorrelationQuery noActionQuery = correlationQuery.Clone();
noActionQuery.Where = new CorrelationActionMessageFilter { Action = String.Empty };
queryCollection.Add(noActionQuery);
}
}
return queryCollection;
}
public ClientRequestApprovalWorkflow()
{
Variable <CorrelationHandle> corr = new Variable <CorrelationHandle>();
Variable <ApprovalResponse> response = new Variable <ApprovalResponse>();
Variable <ApprovalRequest> cancelRequest = new Variable <ApprovalRequest> {
Name = "CancelRequest"
};
Variable <StartApprovalParams> startParams = new Variable <StartApprovalParams>();
Variable <CorrelationHandle> requestReplyHandle = new Variable <CorrelationHandle> {
Name = "RequestReplyHandle"
};
// For correlating between approval requests and responses
MessageQuerySet approvalMQS = new MessageQuerySet
{
{
"ApprovalProcessId",
new XPathMessageQuery("local-name()='Id'", new XPathMessageContext())
}
};
this.Implementation = () =>
new Sequence
{
Variables = { corr, response, startParams, requestReplyHandle, cancelRequest },
Activities =
{
// Called by a local client proxy to trigger the creation of a new approval request
new Receive
{
OperationName = "StartGetApproval",
ServiceContractName = "IApprovalResults",
Content = new ReceiveMessageContent(new OutArgument <StartApprovalParams>(startParams)),
CanCreateInstance = true,
},
// Ask the approval manager to start the approval process
new Send
{
OperationName = "RequestApprovalOf",
ServiceContractName = "IApprovalProcess",
EndpointAddress = new InArgument <Uri>(env => startParams.Get(env).ServiceAddress),
Endpoint = new Endpoint
{
Binding = new BasicHttpBinding(),
},
Content = new SendMessageContent(new InArgument <ApprovalRequest>(env => startParams.Get(env).Request)),
CorrelationInitializers =
{
new QueryCorrelationInitializer
{
CorrelationHandle = corr,
MessageQuerySet = approvalMQS,
},
}
},
// Get a response from the approval manager or a request to cancel the approval
// from the local client proxy (user presses the cancel request button on the ui)
new Pick
{
Branches =
{
new PickBranch
{
Trigger = new Receive
{
OperationName = "ApprovalProcessResults",
ServiceContractName = "IApprovalResults",
CorrelatesWith = corr,
CorrelatesOn = approvalMQS,
Content = new ReceiveMessageContent(new OutArgument <ApprovalResponse>(response)),
},
},
new PickBranch
{
Trigger = new Receive
{
OperationName = "CancelApprovalRequest",
ServiceContractName = "IApprovalResults",
CorrelatesWith = corr,
CorrelatesOn = approvalMQS,
Content = new ReceiveMessageContent(new OutArgument <ApprovalRequest>(cancelRequest)),
},
// Send cancelation to the approval manager to pass on to clients approving document
Action = new Sequence
{
Activities =
{
new Send
{
OperationName = "CancelApprovalRequest",
ServiceContractName = "IApprovalProcess",
EndpointAddress = new InArgument <Uri>(env => startParams.Get(env).ServiceAddress),
Endpoint = new Endpoint
{
Binding = new BasicHttpBinding(),
},
Content = new SendMessageContent(new InArgument <ApprovalRequest>(env => startParams.Get(env).Request)),
},
new TerminateWorkflow
{
Reason = "Approval Request Canceled",
}
}
}
}
}
},
new InvokeMethod
{
TargetType = typeof(ExternalToMainComm),
MethodName = "WriteStatusLine",
Parameters =
{
new InArgument <String>("Got an approval response..."),
},
},
// update ui with new response
new InvokeMethod
{
TargetType = typeof(ExternalToMainComm),
MethodName = "ApprovalRequestResponse",
Parameters =
{
new InArgument <ApprovalResponse>(response),
}
},
}
};
}
public static CorrelationQuery CreateServerCorrelationQuery(MessageQuerySet select, Collection<CorrelationInitializer> correlationInitializers, OperationDescription operation, bool isResponse)
{
CorrelationQuery query = CreateCorrelationQueryCore(select, correlationInitializers);
if (query != null)
{
string str = !isResponse ? operation.Messages[0].Action : operation.Messages[1].Action;
CorrelationActionMessageFilter filter = new CorrelationActionMessageFilter {
Action = str
};
query.Where = filter;
}
return query;
}
static WorkflowService GetService()
{
Variable<Customer> customer = new Variable<Customer>();
Variable<Order> order = new Variable<Order>();
Variable<string> drug = new Variable<string>();
Variable<double> adjustedCost = new Variable<double>();
Variable<int> percentagePaidByInsurance = new Variable<int>();
Variable<CorrelationHandle> customerHandle = new Variable<CorrelationHandle>();
Variable<CorrelationHandle> orderHandle = new Variable<CorrelationHandle>();
XPathMessageContext pathContext = new XPathMessageContext();
pathContext.AddNamespace("psns", Constants.PharmacyServiceNamespace);
MessageQuerySet GetOrderQuerySet = new MessageQuerySet
{
{
"OrderID",
new XPathMessageQuery("//psns:Order/psns:OrderID",pathContext)
}
};
MessageQuerySet GetOrderIDQuerySet = new MessageQuerySet
{
{
"OrderID",
new XPathMessageQuery("//ser:guid",pathContext)
}
};
MessageQuerySet customerQuerySet = new MessageQuerySet
{
{
"CustomerID",
new XPathMessageQuery("//psns:GetBaseCost/psns:Customer/psns:CustomerID",pathContext)
}
};
MessageQuerySet customerIDQuerySet = new MessageQuerySet
{
{
"CustomerID",
new XPathMessageQuery("//ser:guid",pathContext)
}
};
// This will use implicit correlation within the workflow using the WorkflowServiceHost's default CorrelationHandle
Receive prescriptionRequest = new Receive
{
DisplayName = "Request Perscription",
OperationName = "GetBaseCost",
ServiceContractName = Constants.PharmacyServiceContractName,
CanCreateInstance = true,
//CorrelatesWith = customerHandle, -- add this line for explicit correlation
CorrelatesOn = customerQuerySet,
Content = new ReceiveParametersContent
{
Parameters =
{
{"Customer",new OutArgument<Customer>(customer)},
{"Drug",new OutArgument<string>(drug)},
}
}
};
// This will use implicit correlation within the workflow using the WorkflowServiceHost's default CorrelationHandle
Receive GetInsurancePaymentPercentageRequest = new Receive
{
DisplayName = "Get Insurance Coverage",
ServiceContractName = Constants.PharmacyServiceContractName,
OperationName = "GetInsurancePaymentPercentage",
CanCreateInstance = true,
//CorrelatesWith = customerHandle, -- add this line for explicit correlation
CorrelatesOn = customerIDQuerySet,
Content = ReceiveContent.Create(new OutArgument<Guid>())
};
// This will explicitly correlate with the SendReply action after the prescriptionRequest using the OrderID (stored in the orderHandle)
Receive GetAdjustedCostRequest = new Receive
{
DisplayName = "Get Adjusted Cost",
OperationName = "GetAdjustedCost",
ServiceContractName = Constants.PharmacyServiceContractName,
CanCreateInstance = true,
CorrelatesOn = GetOrderIDQuerySet,
CorrelatesWith = orderHandle,
Content = ReceiveContent.Create(new OutArgument<Guid>())
};
Activity PrescriptonWorkflow = new Sequence()
{
Variables = { customer, order, drug, percentagePaidByInsurance, adjustedCost, customerHandle, orderHandle },
Activities =
{
new WriteLine
{
Text = "Beginning Workflow"
},
new Parallel
{
Branches =
{
new Sequence
{
Activities =
{
GetInsurancePaymentPercentageRequest,
new Assign<int>
{
To = new OutArgument<int>( (e) => percentagePaidByInsurance.Get(e) ),
Value = new InArgument<int>( (e) => new Random().Next(0,100))
},
new SendReply
{
DisplayName = "Return Percentage",
Request = GetInsurancePaymentPercentageRequest,
Content = SendContent.Create(new InArgument<int>((e) => percentagePaidByInsurance.Get(e)))
}
}
},
new Sequence
{
Activities =
{
prescriptionRequest,
new WriteLine
{
Text = new InArgument<string>(env => (string.Format("{0}, {1}\t{2}", customer.Get(env).LastName ,customer.Get(env).FirstName,customer.Get(env).CustomerID.ToString())))
},
new Assign<Order>
{
To = new OutArgument<Order>(order),
Value = new InArgument<Order>( (e) => new Order() { CustomerID = customer.Get(e).CustomerID, Drug = drug.Get(e), OrderID = Guid.NewGuid() } )
},
new WriteLine
{
Text = new InArgument<string>(env => (string.Format("OrderID: {0}", order.Get(env).OrderID.ToString())))
},
new Assign<int>
{
To = new OutArgument<int>( (e) => order.Get(e).Cost ),
Value = new InArgument<int>( (e) => new Random().Next(20,50))
},
new SendReply
{
DisplayName = "Send Adjusted Cost",
Request = prescriptionRequest,
// Initialize the orderHandle using the MessageQuerySet to correlate with the final GetAdjustedCost request
CorrelationInitializers =
{
new QueryCorrelationInitializer
{
CorrelationHandle = orderHandle,
MessageQuerySet = GetOrderQuerySet
}
},
Content = SendContent.Create(new InArgument<Order>((e) => order.Get(e)))
}
}
}
}
},
new Assign<double>
{
To = new OutArgument<double>( (e) => adjustedCost.Get(e) ),
Value = new InArgument<double>( (e) => order.Get(e).Cost * (100-percentagePaidByInsurance.Get(e)) *.01)
},
new WriteLine
{
Text = new InArgument<string>(env => (string.Format("Base Cost: ${0}", order.Get(env).Cost.ToString())))
},
new WriteLine
{
Text = new InArgument<string>(env => (string.Format("Insurance Coverage: {0}%", percentagePaidByInsurance.Get(env).ToString())))
},
new WriteLine
{
Text = new InArgument<string>(env => (string.Format("Adjusted Cost: ${0}", decimal.Round(Convert.ToDecimal(adjustedCost.Get(env)),2))))
},
GetAdjustedCostRequest,
new SendReply
{
Request = GetAdjustedCostRequest,
Content = SendContent.Create(new InArgument<double>((e) => adjustedCost.Get(e)))
},
new WriteLine
{
Text = "Workflow Completed"
}
}
};
WorkflowService service = new WorkflowService
{
Name = "PharmacyService",
Body = PrescriptonWorkflow,
ConfigurationName = "PharmacyService"
};
return service;
}
public static CorrelationQuery CreateServerCorrelationQuery(MessageQuerySet select, Collection<CorrelationInitializer> correlationInitializers,
OperationDescription operation, bool isResponse)
{
Fx.Assert(operation != null, "Argument cannot be null!");
CorrelationQuery correlationQuery = CreateCorrelationQueryCore(select, correlationInitializers);
if (correlationQuery != null)
{
string action = !isResponse ? operation.Messages[0].Action : operation.Messages[1].Action;
correlationQuery.Where = new CorrelationActionMessageFilter { Action = action };
}
return correlationQuery;
}
public ClientRequestApprovalWorkflow()
{
Variable<CorrelationHandle> corr = new Variable<CorrelationHandle>();
Variable<ApprovalResponse> response = new Variable<ApprovalResponse>();
Variable<ApprovalRequest> cancelRequest = new Variable<ApprovalRequest> { Name = "CancelRequest" };
Variable<StartApprovalParams> startParams = new Variable<StartApprovalParams>();
Variable<CorrelationHandle> requestReplyHandle = new Variable<CorrelationHandle> { Name = "RequestReplyHandle" };
// For correlating between approval requests and responses
MessageQuerySet approvalMQS = new MessageQuerySet
{
{
"ApprovalProcessId",
new XPathMessageQuery("local-name()='Id'", new XPathMessageContext())
}
};
this.Implementation = () =>
new Sequence
{
Variables = { corr, response, startParams, requestReplyHandle, cancelRequest },
Activities =
{
// Called by a local client proxy to trigger the creation of a new approval request
new Receive
{
OperationName = "StartGetApproval",
ServiceContractName = "IApprovalResults",
Content = new ReceiveMessageContent(new OutArgument<StartApprovalParams>(startParams)),
CanCreateInstance = true,
},
// Ask the approval manager to start the approval process
new Send
{
OperationName = "RequestApprovalOf",
ServiceContractName = "IApprovalProcess",
EndpointAddress = new InArgument<Uri>(env => startParams.Get(env).ServiceAddress),
Endpoint = new Endpoint
{
Binding = new BasicHttpBinding(),
},
Content = new SendMessageContent(new InArgument<ApprovalRequest>(env => startParams.Get(env).Request)),
CorrelationInitializers =
{
new QueryCorrelationInitializer
{
CorrelationHandle = corr,
MessageQuerySet = approvalMQS,
},
}
},
// Get a response from the approval manager or a request to cancel the approval
// from the local client proxy (user presses the cancel request button on the ui)
new Pick
{
Branches =
{
new PickBranch
{
Trigger = new Receive
{
OperationName = "ApprovalProcessResults",
ServiceContractName = "IApprovalResults",
CorrelatesWith = corr,
CorrelatesOn = approvalMQS,
Content = new ReceiveMessageContent(new OutArgument<ApprovalResponse>(response)),
},
},
new PickBranch
{
Trigger = new Receive
{
OperationName = "CancelApprovalRequest",
ServiceContractName = "IApprovalResults",
CorrelatesWith = corr,
CorrelatesOn = approvalMQS,
Content = new ReceiveMessageContent(new OutArgument<ApprovalRequest>(cancelRequest)),
},
// Send cancelation to the approval manager to pass on to clients approving document
Action = new Sequence
{
Activities =
{
new Send
{
OperationName = "CancelApprovalRequest",
ServiceContractName = "IApprovalProcess",
EndpointAddress = new InArgument<Uri>(env => startParams.Get(env).ServiceAddress),
Endpoint = new Endpoint
{
Binding = new BasicHttpBinding(),
},
Content = new SendMessageContent(new InArgument<ApprovalRequest>(env => startParams.Get(env).Request)),
},
new TerminateWorkflow
{
Reason = "Approval Request Canceled",
}
}
}
}
}
},
new InvokeMethod
{
TargetType = typeof(ExternalToMainComm),
MethodName = "WriteStatusLine",
Parameters =
{
new InArgument<String>("Got an approval response..."),
},
},
// update ui with new response
new InvokeMethod
{
TargetType = typeof(ExternalToMainComm),
MethodName = "ApprovalRequestResponse",
Parameters =
{
new InArgument<ApprovalResponse>(response),
}
},
}
};
}
static CorrelationQuery CreateCorrelationQueryCore(MessageQuerySet select, Collection<CorrelationInitializer> correlationInitializers)
{
CorrelationQuery correlationQuery = null;
if (select != null)
{
Fx.Assert(select.Count != 0, "Empty MessageQuerySet is not allowed!");
correlationQuery = new CorrelationQuery
{
Select = select
};
}
if (correlationInitializers != null && correlationInitializers.Count > 0)
{
foreach (CorrelationInitializer correlation in correlationInitializers)
{
QueryCorrelationInitializer queryCorrelation = correlation as QueryCorrelationInitializer;
if (queryCorrelation != null)
{
Fx.Assert(queryCorrelation.MessageQuerySet.Count != 0, "Empty MessageQuerySet is not allowed!");
correlationQuery = correlationQuery ?? new CorrelationQuery();
correlationQuery.SelectAdditional.Add(queryCorrelation.MessageQuerySet);
}
}
}
return correlationQuery;
}
internal IDictionary <XName, ContractDescription> GetContractDescriptions()
{
if (this.cachedInferredContracts == null)
{
this.WalkActivityTree();
this.correlationQueryByContract = new Dictionary <XName, Collection <CorrelationQuery> >();
IDictionary <XName, ContractDescription> dictionary = new Dictionary <XName, ContractDescription>();
IDictionary <ContractAndOperationNameTuple, OperationInfo> dictionary2 = new Dictionary <ContractAndOperationNameTuple, OperationInfo>();
foreach (Receive receive in this.knownServiceActivities)
{
OperationInfo info;
XName serviceContractXName = this.FixServiceContractName(receive.ServiceContractName);
ContractAndOperationNameTuple key = new ContractAndOperationNameTuple(serviceContractXName, receive.OperationName);
if (dictionary2.TryGetValue(key, out info))
{
ContractValidationHelper.ValidateReceiveWithReceive(receive, info.Receive);
}
else
{
ContractDescription description;
if (!dictionary.TryGetValue(serviceContractXName, out description))
{
description = new ContractDescription(serviceContractXName.LocalName, serviceContractXName.NamespaceName)
{
ConfigurationName = serviceContractXName.LocalName
};
dictionary.Add(serviceContractXName, description);
}
OperationDescription item = ContractInferenceHelper.CreateOperationDescription(receive, description);
description.Operations.Add(item);
info = new OperationInfo(receive, item);
dictionary2.Add(key, info);
}
this.CorrectOutMessageForOperationWithFault(receive, info);
ContractInferenceHelper.UpdateIsOneWayFlag(receive, info.OperationDescription);
ContractInferenceHelper.AddFaultDescription(receive, info.OperationDescription);
ContractInferenceHelper.AddKnownTypesToOperation(receive, info.OperationDescription);
ContractInferenceHelper.AddReceiveToFormatterBehavior(receive, info.OperationDescription);
Collection <CorrelationQuery> queries = null;
if (receive.HasCorrelatesOn || receive.HasCorrelationInitializers)
{
MessageQuerySet select = receive.HasCorrelatesOn ? receive.CorrelatesOn : null;
CorrelationQuery correlationQuery = ContractInferenceHelper.CreateServerCorrelationQuery(select, receive.CorrelationInitializers, info.OperationDescription, false);
this.CollectCorrelationQuery(ref queries, serviceContractXName, correlationQuery);
}
if (receive.HasReply)
{
foreach (SendReply reply in receive.FollowingReplies)
{
ReceiveAndReplyTuple tuple2 = new ReceiveAndReplyTuple(receive, reply);
this.receiveAndReplyPairs.Remove(tuple2);
this.CollectCorrelationQueryFromReply(ref queries, serviceContractXName, reply, info.OperationDescription);
reply.SetContractName(serviceContractXName);
}
}
if (receive.HasFault)
{
foreach (Activity activity in receive.FollowingFaults)
{
ReceiveAndReplyTuple tuple3 = new ReceiveAndReplyTuple(receive, activity);
this.receiveAndReplyPairs.Remove(tuple3);
this.CollectCorrelationQueryFromReply(ref queries, serviceContractXName, activity, info.OperationDescription);
}
}
}
if (this.receiveAndReplyPairs.Count != 0)
{
throw System.ServiceModel.Activities.FxTrace.Exception.AsError(new ValidationException(System.ServiceModel.Activities.SR.DanglingReceive));
}
if (System.ServiceModel.Activities.TD.InferredContractDescriptionIsEnabled())
{
foreach (ContractDescription description3 in dictionary.Values)
{
System.ServiceModel.Activities.TD.InferredContractDescription(description3.Name, description3.Namespace);
if (System.ServiceModel.Activities.TD.InferredOperationDescriptionIsEnabled())
{
foreach (OperationDescription description4 in description3.Operations)
{
System.ServiceModel.Activities.TD.InferredOperationDescription(description4.Name, description3.Name, description4.IsOneWay.ToString());
}
}
}
}
this.cachedInferredContracts = dictionary;
}
return(this.cachedInferredContracts);
}
