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IPolicyExportExtension.ExportPolicy Método

Definición

Implemente para incluir y exportar una aserción de directiva personalizada sobre los enlaces.

public:
 void ExportPolicy(System::ServiceModel::Description::MetadataExporter ^ exporter, System::ServiceModel::Description::PolicyConversionContext ^ context);
public void ExportPolicy (System.ServiceModel.Description.MetadataExporter exporter, System.ServiceModel.Description.PolicyConversionContext context);
abstract member ExportPolicy : System.ServiceModel.Description.MetadataExporter * System.ServiceModel.Description.PolicyConversionContext -> unit
Public Sub ExportPolicy (exporter As MetadataExporter, context As PolicyConversionContext)

Parámetros

exporter
MetadataExporter

La clase MetadataExporter que puede usar para modificar el proceso de exportación.

context
PolicyConversionContext

PolicyConversionContext que puede utilizar para insertar su aserción de directiva personalizada.

Ejemplos

El siguiente ejemplo de código muestra la implementación de IPolicyExportExtension en un BindingElement. En este ejemplo, se asocia un elemento de enlace personalizado al archivo WSDL en el nivel del enlace.

#region IPolicyExporter Members
public void ExportPolicy(MetadataExporter exporter, PolicyConversionContext policyContext)
{
  if (exporter == null)
    throw new NullReferenceException("The MetadataExporter object passed to the ExporterBindingElement is null.");
  if (policyContext == null)
    throw new NullReferenceException("The PolicyConversionContext object passed to the ExporterBindingElement is null.");

  XmlElement elem = doc.CreateElement(name1, ns1);
  elem.InnerText = "My custom text.";
  XmlAttribute att = doc.CreateAttribute("MyCustomAttribute", ns1);
  att.Value = "ExampleValue";
  elem.Attributes.Append(att);
  XmlElement subElement = doc.CreateElement("MyCustomSubElement", ns1);
  subElement.InnerText = "Custom Subelement Text.";
  elem.AppendChild(subElement);
  policyContext.GetBindingAssertions().Add(elem);
  Console.WriteLine("The custom policy exporter was called.");
}
#endregion
#Region "IPolicyExporter Members"
Public Sub ExportPolicy(ByVal exporter As MetadataExporter, ByVal policyContext As PolicyConversionContext) Implements IPolicyExportExtension.ExportPolicy
  If exporter Is Nothing Then
    Throw New NullReferenceException("The MetadataExporter object passed to the ExporterBindingElement is null.")
  End If
  If policyContext Is Nothing Then
    Throw New NullReferenceException("The PolicyConversionContext object passed to the ExporterBindingElement is null.")
  End If

  Dim elem As XmlElement = doc.CreateElement(name1, ns1)
  elem.InnerText = "My custom text."
  Dim att As XmlAttribute = doc.CreateAttribute("MyCustomAttribute", ns1)
  att.Value = "ExampleValue"
  elem.Attributes.Append(att)
  Dim subElement As XmlElement = doc.CreateElement("MyCustomSubElement", ns1)
  subElement.InnerText = "Custom Subelement Text."
  elem.AppendChild(subElement)
  policyContext.GetBindingAssertions().Add(elem)
  Console.WriteLine("The custom policy exporter was called.")
End Sub
#End Region

El ejemplo de código siguiente muestra una implementación System.ServiceModel.Configuration.BindingElementExtensionElement que permite cargar el exportador de directivas anterior desde un archivo de configuración de la aplicación.

public class ExporterBindingElementConfigurationSection : BindingElementExtensionElement
{
  public ExporterBindingElementConfigurationSection()
  { Console.WriteLine("Exporter configuration section created."); }

  public override Type BindingElementType
  { get { return typeof(ExporterBindingElement); } }

  protected override BindingElement CreateBindingElement()
  { return new ExporterBindingElement(); }
}
Public Class ExporterBindingElementConfigurationSection
    Inherits BindingElementExtensionElement
  Public Sub New()
      Console.WriteLine("Exporter configuration section created.")
  End Sub

  Public Overrides ReadOnly Property BindingElementType() As Type
      Get
          Return GetType(ExporterBindingElement)
      End Get
  End Property

  Protected Overrides Function CreateBindingElement() As BindingElement
      Return New ExporterBindingElement()
  End Function
End Class

El siguiente ejemplo muestra el archivo de configuración host que carga al exportador de directivas personalizado.

<system.serviceModel>
  <services>
    <service 
      name="Microsoft.WCF.Documentation.StatefulService"
      behaviorConfiguration="addMetadata"
    >
      <host>
        <baseAddresses>
          <add baseAddress="http://localhost:8080/StatefulService"/>
        </baseAddresses>
      </host>
      <endpoint 
        address="http://localhost:8080/StatefulService" 
        binding="customBinding" 
        bindingConfiguration="exporter" 
        contract="Microsoft.WCF.Documentation.IStatefulService" 
      />
      <endpoint
        address="mex"
        binding="mexHttpBinding"
        contract="IMetadataExchange"
      />
    </service>
  </services>
  <behaviors>
    <serviceBehaviors>
      <behavior name="addMetadata">
        <serviceMetadata
           httpGetEnabled="true"
           httpGetUrl=""
         />
      </behavior>
    </serviceBehaviors>
  </behaviors>
  <bindings>
    <customBinding>
      <!-- 
        Use the name attribute of the binding element as 
        the value of the bindingConfiguration attribute in 
        your endpoint.
      -->
      <binding name ="exporter">
        <!-- Use the name attribute of your binding element extension specified below. -->
        <!-- Be certain the order of your custom binding elements is correct. -->
        <exporterBinding />
        <reliableSession/>
        <textMessageEncoding messageVersion="Default" />
        <httpTransport/>
      </binding>
    </customBinding>
  </bindings>
  <extensions>
    <bindingElementExtensions>
      <!-- Use the add element to associate your bindingelement configuration handler and give it a name to use. -->
      <add 
        type="Microsoft.WCF.Documentation.ExporterBindingElementConfigurationSection,PolicyExtensions" 
        name="exporterBinding" />
    </bindingElementExtensions>
  </extensions>
</system.serviceModel>

El ejemplo siguiente muestra la aserción personalizada en el archivo WSDL.

<wsdl:definitions xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy"

  namespaces removed here for clarity...

>
  <wsp:Policy wsu:Id="CustomBinding_IStatefulService_policy">
    <wsp:ExactlyOne>
      <wsp:All>
        <acme 
          b:MyCustomAttribute="ExampleValue"
          xmlns="http://Microsoft/WCF/Documentation/CustomPolicyAssertions"           xmlns:b="http://Microsoft/WCF/Documentation/CustomPolicyAssertions">
           My custom text.
          <MyCustomSubElement>Custom Subelement Text.</MyCustomSubElement>
        </acme>
        <wsrm:RMAssertion xmlns:wsrm="http://schemas.xmlsoap.org/ws/2005/02/rm/policy">
          <wsrm:InactivityTimeout Milliseconds="600000" />
          <wsrm:AcknowledgementInterval Milliseconds="200" />
        </wsrm:RMAssertion>
        <wsaw:UsingAddressing />
      </wsp:All>
    </wsp:ExactlyOne>
  </wsp:Policy>
  <wsdl:import namespace="http://microsoft.wcf.documentation" location="" />

Comentarios

Utilice GetBindingAssertions, GetMessageBindingAssertions, y los métodos GetOperationBindingAssertions para obtener colecciones de aserciones de directiva que ya se han exportado a varios ámbitos. A continuación, agregue el objeto IPolicyExportExtension a la colección adecuada.

Se aplica a