IParameterInspector.BeforeCall(String, Object[]) Metoda
Definicja
Ważne
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Wywoływane przed wysłaniem wywołań klienta i zwróceniem odpowiedzi usługi.
public:
System::Object ^ BeforeCall(System::String ^ operationName, cli::array <System::Object ^> ^ inputs);
public object BeforeCall (string operationName, object[] inputs);
abstract member BeforeCall : string * obj[] -> obj
Public Function BeforeCall (operationName As String, inputs As Object()) As Object
Parametry
- operationName
- String
Nazwa operacji.
- inputs
- Object[]
Obiekty przekazane do metody przez klienta.
Zwraca
Stan korelacji zwracany jako correlationState
parametr w pliku AfterCall(String, Object[], Object, Object). Zwróć wartość null
, jeśli nie zamierzasz używać stanu korelacji.
Przykłady
Poniższy przykład kodu przedstawia implementację IParameterInspector , która:
Zapisuje nazwę operacji i zwraca wartość do konsoli po deserializacji odpowiedzi przez usługę lub żądanie zostało serializowane przez klienta.
Zapisuje nazwę operacji w konsoli po deserializacji odpowiedzi na kliencie lub po serializacji odpowiedzi w usłudze.
#region IParameterInspector Members
public void AfterCall(string operationName, object[] outputs, object returnValue, object correlationState)
{
Console.WriteLine(
"IParameterInspector.AfterCall called for {0} with return value {1}.",
operationName,
returnValue.ToString()
);
}
public object BeforeCall(string operationName, object[] inputs)
{
Console.WriteLine("IParameterInspector.BeforeCall called for {0}.", operationName);
return null;
}
#Region "IParameterInspector Members"
Public Sub AfterCall(ByVal operationName As String, ByVal outputs() As Object, ByVal returnValue As Object, _
ByVal correlationState As Object) Implements IParameterInspector.AfterCall
Console.WriteLine("IParameterInspector.AfterCall called for {0} with return value {1}.", _
operationName, returnValue.ToString())
End Sub
Public Function BeforeCall(ByVal operationName As String, ByVal inputs() As Object) As Object Implements _
IParameterInspector.BeforeCall
Console.WriteLine("IParameterInspector.BeforeCall called for {0}.", operationName)
Return Nothing
End Function
W poniższym przykładzie kodu pokazano, jak używać System.ServiceModel.Description.IOperationBehaviormetody lub System.ServiceModel.Description.IEndpointBehavior System.ServiceModel.Description.IServiceBehavior do wstawiania IParameterInspector obiektów.
using System;
using System.Collections.Generic;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Configuration;
using System.ServiceModel.Description;
using System.ServiceModel.Dispatcher;
using System.Text;
namespace Microsoft.WCF.Documentation
{
public class InspectorInserter : BehaviorExtensionElement, IServiceBehavior, IEndpointBehavior, IOperationBehavior
{
#region IServiceBehavior Members
public void AddBindingParameters(
ServiceDescription serviceDescription,
ServiceHostBase serviceHostBase,
System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints,
BindingParameterCollection bindingParameters
)
{ return; }
public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
foreach (ChannelDispatcher chDisp in serviceHostBase.ChannelDispatchers)
{
foreach (EndpointDispatcher epDisp in chDisp.Endpoints)
{
epDisp.DispatchRuntime.MessageInspectors.Add(new Inspector());
foreach (DispatchOperation op in epDisp.DispatchRuntime.Operations)
op.ParameterInspectors.Add(new Inspector());
}
}
}
public void Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase){ return; }
#endregion
#region IEndpointBehavior Members
public void AddBindingParameters(
ServiceEndpoint endpoint, BindingParameterCollection bindingParameters
) { return; }
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
clientRuntime.MessageInspectors.Add(new Inspector());
foreach (ClientOperation op in clientRuntime.Operations)
op.ParameterInspectors.Add(new Inspector());
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(new Inspector());
foreach (DispatchOperation op in endpointDispatcher.DispatchRuntime.Operations)
op.ParameterInspectors.Add(new Inspector());
}
public void Validate(ServiceEndpoint endpoint){ return; }
#endregion
#region IOperationBehavior Members
public void AddBindingParameters(
OperationDescription operationDescription, BindingParameterCollection bindingParameters
)
{ return; }
public void ApplyClientBehavior(OperationDescription operationDescription, ClientOperation clientOperation)
{
clientOperation.ParameterInspectors.Add(new Inspector());
}
public void ApplyDispatchBehavior(OperationDescription operationDescription, DispatchOperation dispatchOperation)
{
dispatchOperation.ParameterInspectors.Add(new Inspector());
}
public void Validate(OperationDescription operationDescription){ return; }
#endregion
public override Type BehaviorType
{
get { return typeof(InspectorInserter); }
}
protected override object CreateBehavior()
{ return new InspectorInserter(); }
}
}
Imports System.ServiceModel
Imports System.ServiceModel.Channels
Imports System.ServiceModel.Configuration
Imports System.ServiceModel.Description
Imports System.ServiceModel.Dispatcher
Imports System.Text
Namespace Microsoft.WCF.Documentation
Public Class InspectorInserter
Inherits BehaviorExtensionElement
Implements IServiceBehavior, IEndpointBehavior, IOperationBehavior
#Region "IServiceBehavior Members"
Public Sub AddBindingParameters(ByVal serviceDescription As ServiceDescription, _
ByVal serviceHostBase As ServiceHostBase, ByVal endpoints As _
System.Collections.ObjectModel.Collection(Of ServiceEndpoint), _
ByVal bindingParameters As BindingParameterCollection) Implements IServiceBehavior.AddBindingParameters
Return
End Sub
Public Sub ApplyDispatchBehavior(ByVal serviceDescription As ServiceDescription, _
ByVal serviceHostBase As ServiceHostBase) Implements _
IServiceBehavior.ApplyDispatchBehavior
For Each chDisp As ChannelDispatcher In serviceHostBase.ChannelDispatchers
For Each epDisp As EndpointDispatcher In chDisp.Endpoints
epDisp.DispatchRuntime.MessageInspectors.Add(New Inspector())
For Each op As DispatchOperation In epDisp.DispatchRuntime.Operations
op.ParameterInspectors.Add(New Inspector())
Next op
Next epDisp
Next chDisp
End Sub
Public Sub Validate(ByVal serviceDescription As ServiceDescription, ByVal serviceHostBase As ServiceHostBase) _
Implements IServiceBehavior.Validate
Return
End Sub
#End Region
#Region "IEndpointBehavior Members"
Public Sub AddBindingParameters(ByVal endpoint As ServiceEndpoint, ByVal bindingParameters _
As BindingParameterCollection) Implements IEndpointBehavior.AddBindingParameters
Return
End Sub
Public Sub ApplyClientBehavior(ByVal endpoint As ServiceEndpoint, ByVal clientRuntime As ClientRuntime) _
Implements IEndpointBehavior.ApplyClientBehavior
clientRuntime.MessageInspectors.Add(New Inspector())
For Each op As ClientOperation In clientRuntime.Operations
op.ParameterInspectors.Add(New Inspector())
Next op
End Sub
Public Sub ApplyDispatchBehavior(ByVal endpoint As ServiceEndpoint, ByVal endpointDispatcher As _
EndpointDispatcher) Implements IEndpointBehavior.ApplyDispatchBehavior
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(New Inspector())
For Each op As DispatchOperation In endpointDispatcher.DispatchRuntime.Operations
op.ParameterInspectors.Add(New Inspector())
Next op
End Sub
Public Sub Validate(ByVal endpoint As ServiceEndpoint) Implements IEndpointBehavior.Validate
Return
End Sub
#End Region
#Region "IOperationBehavior Members"
Public Sub AddBindingParameters(ByVal operationDescription As OperationDescription, _
ByVal bindingParameters As BindingParameterCollection) Implements _
IOperationBehavior.AddBindingParameters
Return
End Sub
Public Sub ApplyClientBehavior(ByVal operationDescription As OperationDescription, ByVal _
clientOperation As ClientOperation) Implements IOperationBehavior.ApplyClientBehavior
clientOperation.ParameterInspectors.Add(New Inspector())
End Sub
Public Sub ApplyDispatchBehavior(ByVal operationDescription As OperationDescription, ByVal dispatchOperation As _
DispatchOperation) Implements IOperationBehavior.ApplyDispatchBehavior
dispatchOperation.ParameterInspectors.Add(New Inspector())
End Sub
Public Sub Validate(ByVal operationDescription As OperationDescription) Implements IOperationBehavior.Validate
Return
End Sub
#End Region
Public Overrides ReadOnly Property BehaviorType() As Type
Get
Return GetType(InspectorInserter)
End Get
End Property
Protected Overrides Function CreateBehavior() As Object
Return New InspectorInserter()
End Function
End Class
End Namespace
Uwagi
W przypadku wywołań wychodzących od klienta inspektor jest wywoływany, zanim zawartość żądania zostanie serializowana i wysłana do usługi. Inspektor jest również wywoływany po deserializacji odpowiedzi, ale przed wysłaniem wartości zwracanych do metody serwera proxy.
W przypadku wywołań przychodzących do usługi inspektor jest wywoływany po deserializacji zawartości żądania i wysłaniu do operacji usługi oraz przed serializacji zawartości odpowiedzi i wysłania do klienta.