public static string CreateFromDataContractSerializer(XName serviceContractName, string operationName, string parameterName, bool isReply, Type type, MemberInfo[] pathToMember, out XmlNamespaceManager namespaces)
{
if (type == null)
{
throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("type"));
}
if (pathToMember == null)
{
throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("pathToMember"));
}
if (operationName == null)
{
throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("operationName"));
}
if (serviceContractName == null)
{
throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("serviceContractName"));
}
if (isReply)
{
operationName = operationName + "Response";
}
StringBuilder rootElementXpath = new StringBuilder("/xgSc:" + operationName);
rootElementXpath.Append("/xgSc:" + parameterName);
string str = XPathQueryGenerator.CreateFromDataContractSerializer(type, pathToMember, rootElementXpath, out namespaces);
string namespaceName = serviceContractName.NamespaceName;
if (string.IsNullOrEmpty(namespaceName))
{
namespaceName = "http://tempuri.org/";
}
namespaces.AddNamespace("xgSc", namespaceName);
return(str);
}
static void GenerateXPath(Type t, MemberInfo[] mi)
{
// Create a new name table and name space manager.
NameTable nt = new NameTable();
XmlNamespaceManager xname = new XmlNamespaceManager(nt);
// Generate the query and print it.
string query = XPathQueryGenerator.CreateFromDataContractSerializer(
t, mi, out xname);
Console.WriteLine(query);
Console.WriteLine();
// Display the namespaces and prefixes used in the data contract.
foreach (string s in xname)
{
Console.WriteLine("{0} = {1}", s, xname.LookupNamespace(s));
}
Console.WriteLine();
}
public static string CreateFromDataContractSerializer(XName serviceContractName, string operationName, string parameterName, bool isReply, Type type, MemberInfo[] pathToMember, out XmlNamespaceManager namespaces)
{
if (type == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("type"));
}
if (pathToMember == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("pathToMember"));
}
if (operationName == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("operationName"));
}
if (serviceContractName == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("serviceContractName"));
}
if (isReply)
{
operationName += TypeLoader.ResponseSuffix;
}
StringBuilder xPathBuilder = new StringBuilder(XPathSeparator + ServiceContractPrefix + NsSeparator + operationName);
xPathBuilder.Append(XPathSeparator + ServiceContractPrefix + NsSeparator + parameterName);
string xpath = XPathQueryGenerator.CreateFromDataContractSerializer(type, pathToMember, xPathBuilder, out namespaces);
string serviceContractNamespace = serviceContractName.NamespaceName;
// Use default service contract namespace if the provided serviceContractNamespace is null or empty
if (string.IsNullOrEmpty(serviceContractNamespace))
{
serviceContractNamespace = NamingHelper.DefaultNamespace;
}
namespaces.AddNamespace(ServiceContractPrefix, serviceContractNamespace);
return(xpath);
}
void OnTypeSelectionChanged(object sender, RoutedEventArgs e)
{
var contentCorrelationDesigner = (ContentCorrelationTypeExpander)sender;
//is selection valid (valid type or property)
if (contentCorrelationDesigner.IsSelectionValid)
{
var path = contentCorrelationDesigner.GetMemberPath();
var type = contentCorrelationDesigner.GetSelectedType();
try
{
XmlNamespaceManager namespaceManager = null;
string xpathQuery = string.Empty;
var content = this.Activity.Properties["Content"].Value;
if (content.IsAssignableFrom <ReceiveMessageContent>() || content.IsAssignableFrom <SendMessageContent>())
{
//generating xpath for message content
xpathQuery = XPathQueryGenerator.CreateFromDataContractSerializer(type, path, out namespaceManager);
}
else
{
//generating xpath for parameter content
XName serviceContractName = null;
string operationName = null;
string parameterName = contentCorrelationDesigner.SelectedTypeEntry.Name;
bool isReply = this.Activity.IsAssignableFrom <SendReply>() || this.Activity.IsAssignableFrom <ReceiveReply>();
if (isReply)
{
operationName = (string)this.Activity.Properties["Request"].Value.Properties["OperationName"].ComputedValue;
serviceContractName = (XName)this.Activity.Properties["Request"].Value.Properties["ServiceContractName"].ComputedValue;
if (string.IsNullOrEmpty(operationName) || null == serviceContractName)
{
ModelItem requestDisplayName;
this.Activity.TryGetPropertyValue(out requestDisplayName, "Request", "DisplayName");
throw FxTrace.Exception.AsError(new InvalidOperationException(
string.Format(CultureInfo.CurrentUICulture, (string)this.FindResource("parametersRequiredText"), requestDisplayName.GetCurrentValue())));
}
}
else
{
operationName = (string)this.Activity.Properties["OperationName"].ComputedValue;
serviceContractName = (XName)this.Activity.Properties["ServiceContractName"].ComputedValue;
if (string.IsNullOrEmpty(operationName) || null == serviceContractName)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(
string.Format(CultureInfo.CurrentUICulture, (string)this.FindResource("parametersRequiredText"), this.Activity.Properties["DisplayName"].ComputedValue)));
}
}
xpathQuery = ParameterXPathQueryGenerator.CreateFromDataContractSerializer(serviceContractName, operationName, parameterName, isReply, type, path, out namespaceManager);
}
//use CDF api to build a xpath out of type and its properties
string xpath = string.Format(CultureInfo.InvariantCulture, "sm:body(){0}", xpathQuery);
//get the context
//We need to copy over the namespaces from the manager's table 1 by 1. According to MSDN:
//If you specify an existing name table, any namespaces in the name table are not automatically added to XmlNamespaceManager.
//You must use AddNamespace and RemoveNamespace to add or remove namespaces.
XPathMessageContext messageContext = new XPathMessageContext();
foreach (string prefix in namespaceManager)
{
if (!string.IsNullOrEmpty(prefix) && !messageContext.HasNamespace(prefix) && prefix != "xmlns")
{
messageContext.AddNamespace(prefix, namespaceManager.LookupNamespace(prefix));
}
}
var typeEntry = (ExpanderTypeEntry)contentCorrelationDesigner.Tag;
//construct xpath
XPathMessageQuery query = new XPathMessageQuery(xpath, messageContext);
//store the xpath in the Tag property; this combo's selectedValue is bound to i
typeEntry.Tag = query;
this.SelectedIndex = 0;
this.IsDropDownOpen = false;
this.Query = query;
this.RaiseEvent(new RoutedEventArgs(XPathCreatedEvent, this));
}
catch (Exception err)
{
MessageBox.Show(
err.Message,
(string)this.Resources["controlTitle"],
MessageBoxButton.OK, MessageBoxImage.Error);
}
}
}