IInstanceProvider.GetInstance 메서드

정의

네임스페이스:: System.ServiceModel.Dispatcher

어셈블리:: System.ServiceModel.dll

중요

일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.

서비스 개체를 반환합니다.

오버로드

Name	Description
GetInstance(InstanceContext)	지정된 개체가 지정된 서비스 개체를 InstanceContext 반환합니다.
GetInstance(InstanceContext, Message)	지정된 개체가 지정된 서비스 개체를 InstanceContext 반환합니다.

GetInstance(InstanceContext)

Source:: IInstanceProvider.cs

Source:: IInstanceProvider.cs

Source:: IInstanceProvider.cs

지정된 개체가 지정된 서비스 개체를 InstanceContext 반환합니다.

public:
 System::Object ^ GetInstance(System::ServiceModel::InstanceContext ^ instanceContext);

public object GetInstance(System.ServiceModel.InstanceContext instanceContext);

abstract member GetInstance : System.ServiceModel.InstanceContext -> obj

Public Function GetInstance (instanceContext As InstanceContext) As Object

매개 변수

instanceContext: InstanceContext

현재 InstanceContext 개체입니다.

반품

Object

사용자 정의 서비스 개체입니다.

예제

다음 코드 예제에서는 "싱글톤" 동작을 제공하는 구현 IInstanceProvider 방법을 보여 줍니다. 항상 동일한 서비스 인스턴스를 반환하고 재활용하지 않습니다.

public class ObjectProviderBehavior : IInstanceProvider
{

  string message;
  SampleService service = null;

  public ObjectProviderBehavior(string msg)
  {
    Console.WriteLine("The non-default constructor has been called.");
    this.message = msg;
    this.service = new SampleService("Singleton sample service.");
  }

  #region IInstanceProvider Members

  public object GetInstance(InstanceContext instanceContext, System.ServiceModel.Channels.Message message)
  {
    Console.WriteLine("GetInstance is called:");
    return this.service;
  }

  public object GetInstance(InstanceContext instanceContext)
  {
    Console.WriteLine("GetInstance is called:");
    return this.service;
  }

  public void ReleaseInstance(InstanceContext instanceContext, object instance)
  {
    Console.WriteLine("ReleaseInstance is called. The SingletonBehaviorAttribute never releases.");
  }

  #endregion
}

Public Class ObjectProviderBehavior
    Implements IInstanceProvider

  Private message As String
  Private service As SampleService = Nothing

  Public Sub New(ByVal msg As String)
    Console.WriteLine("The non-default constructor has been called.")
    Me.message = msg
    Me.service = New SampleService("Singleton sample service.")
  End Sub

  #Region "IInstanceProvider Members"

  Public Function GetInstance(ByVal instanceContext As InstanceContext, ByVal message As System.ServiceModel.Channels.Message) As Object Implements IInstanceProvider.GetInstance
    Console.WriteLine("GetInstance is called:")
    Return Me.service
  End Function

  Public Function GetInstance(ByVal instanceContext As InstanceContext) As Object Implements IInstanceProvider.GetInstance
    Console.WriteLine("GetInstance is called:")
    Return Me.service
  End Function

  Public Sub ReleaseInstance(ByVal instanceContext As InstanceContext, ByVal instance As Object) Implements IInstanceProvider.ReleaseInstance
    Console.WriteLine("ReleaseInstance is called. The SingletonBehaviorAttribute never releases.")
  End Sub

  #End Region
End Class

다음 코드 예제에서는 사용자 지정 서비스 인스턴스 공급자를 삽입 하도록 구현 하는 사용자 지정 특성을 구현 IContractBehavior 하는 방법을 보여 줍니다. 또한 특정 계약에 사용을 바인딩하는 구현 IContractBehaviorAttribute도 합니다.

public class SingletonBehaviorAttribute : Attribute, IContractBehaviorAttribute, IContractBehavior
{

  #region IContractBehaviorAttribute Members

  public Type TargetContract
  {
    get { return typeof(ISampleService); }
  }

  #endregion

  #region IContractBehavior Members

  public void AddBindingParameters(ContractDescription description, ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection parameters)
  {
    return;
  }

  public void ApplyClientBehavior(ContractDescription description, ServiceEndpoint endpoint, ClientRuntime clientRuntime)
  {
    return;
  }

  public void ApplyDispatchBehavior(ContractDescription description, ServiceEndpoint endpoint, DispatchRuntime dispatch)
  {
    dispatch.InstanceProvider = new ObjectProviderBehavior("Custom ObjectProviderBehavior constructor.");
  }

  public void Validate(ContractDescription description, ServiceEndpoint endpoint)
  {
    return;
  }

  #endregion
}

Public Class SingletonBehaviorAttribute
    Inherits Attribute
    Implements IContractBehaviorAttribute, IContractBehavior

  #Region "IContractBehaviorAttribute Members"

  Public ReadOnly Property TargetContract() As Type Implements IContractBehaviorAttribute.TargetContract
    Get
        Return GetType(ISampleService)
    End Get
  End Property

  #End Region

  #Region "IContractBehavior Members"

  Public Sub AddBindingParameters(ByVal description As ContractDescription, ByVal endpoint As ServiceEndpoint, ByVal parameters As System.ServiceModel.Channels.BindingParameterCollection) Implements IContractBehavior.AddBindingParameters
    Return
  End Sub

  Public Sub ApplyClientBehavior(ByVal description As ContractDescription, ByVal endpoint As ServiceEndpoint, ByVal clientRuntime As ClientRuntime) Implements IContractBehavior.ApplyClientBehavior
    Return
  End Sub

  Public Sub ApplyDispatchBehavior(ByVal description As ContractDescription, ByVal endpoint As ServiceEndpoint, ByVal dispatch As DispatchRuntime) Implements IContractBehavior.ApplyDispatchBehavior
    dispatch.InstanceProvider = New ObjectProviderBehavior("Custom ObjectProviderBehavior constructor.")
  End Sub

  Public Sub Validate(ByVal description As ContractDescription, ByVal endpoint As ServiceEndpoint) Implements IContractBehavior.Validate
    Return
  End Sub

  #End Region
End Class

설명

이 메서드를 GetInstance(InstanceContext) 사용하여 WCF 서비스가 새 서비스 개체를 만들려고 할 때 수신하는 정확한 서비스 개체를 제어합니다.

적용 대상

GetInstance(InstanceContext, Message)

Source:: IInstanceProvider.cs

Source:: IInstanceProvider.cs

Source:: IInstanceProvider.cs

지정된 개체가 지정된 서비스 개체를 InstanceContext 반환합니다.

public:
 System::Object ^ GetInstance(System::ServiceModel::InstanceContext ^ instanceContext, System::ServiceModel::Channels::Message ^ message);

public object GetInstance(System.ServiceModel.InstanceContext instanceContext, System.ServiceModel.Channels.Message message);

abstract member GetInstance : System.ServiceModel.InstanceContext * System.ServiceModel.Channels.Message -> obj

Public Function GetInstance (instanceContext As InstanceContext, message As Message) As Object

매개 변수

instanceContext: InstanceContext

현재 InstanceContext 개체입니다.

message: Message

서비스 개체 만들기를 트리거한 메시지입니다.

반품

Object

서비스 개체입니다.

예제

public class ObjectProviderBehavior : IInstanceProvider
{

  string message;
  SampleService service = null;

  public ObjectProviderBehavior(string msg)
  {
    Console.WriteLine("The non-default constructor has been called.");
    this.message = msg;
    this.service = new SampleService("Singleton sample service.");
  }

  #region IInstanceProvider Members

  public object GetInstance(InstanceContext instanceContext, System.ServiceModel.Channels.Message message)
  {
    Console.WriteLine("GetInstance is called:");
    return this.service;
  }

  public object GetInstance(InstanceContext instanceContext)
  {
    Console.WriteLine("GetInstance is called:");
    return this.service;
  }

  public void ReleaseInstance(InstanceContext instanceContext, object instance)
  {
    Console.WriteLine("ReleaseInstance is called. The SingletonBehaviorAttribute never releases.");
  }

  #endregion
}

Public Class ObjectProviderBehavior
    Implements IInstanceProvider

  Private message As String
  Private service As SampleService = Nothing

  Public Sub New(ByVal msg As String)
    Console.WriteLine("The non-default constructor has been called.")
    Me.message = msg
    Me.service = New SampleService("Singleton sample service.")
  End Sub

  #Region "IInstanceProvider Members"

  Public Function GetInstance(ByVal instanceContext As InstanceContext, ByVal message As System.ServiceModel.Channels.Message) As Object Implements IInstanceProvider.GetInstance
    Console.WriteLine("GetInstance is called:")
    Return Me.service
  End Function

  Public Function GetInstance(ByVal instanceContext As InstanceContext) As Object Implements IInstanceProvider.GetInstance
    Console.WriteLine("GetInstance is called:")
    Return Me.service
  End Function

  Public Sub ReleaseInstance(ByVal instanceContext As InstanceContext, ByVal instance As Object) Implements IInstanceProvider.ReleaseInstance
    Console.WriteLine("ReleaseInstance is called. The SingletonBehaviorAttribute never releases.")
  End Sub

  #End Region
End Class

public class SingletonBehaviorAttribute : Attribute, IContractBehaviorAttribute, IContractBehavior
{

  #region IContractBehaviorAttribute Members

  public Type TargetContract
  {
    get { return typeof(ISampleService); }
  }

  #endregion

  #region IContractBehavior Members

  public void AddBindingParameters(ContractDescription description, ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection parameters)
  {
    return;
  }

  public void ApplyClientBehavior(ContractDescription description, ServiceEndpoint endpoint, ClientRuntime clientRuntime)
  {
    return;
  }

  public void ApplyDispatchBehavior(ContractDescription description, ServiceEndpoint endpoint, DispatchRuntime dispatch)
  {
    dispatch.InstanceProvider = new ObjectProviderBehavior("Custom ObjectProviderBehavior constructor.");
  }

  public void Validate(ContractDescription description, ServiceEndpoint endpoint)
  {
    return;
  }

  #endregion
}

Public Class SingletonBehaviorAttribute
    Inherits Attribute
    Implements IContractBehaviorAttribute, IContractBehavior

  #Region "IContractBehaviorAttribute Members"

  Public ReadOnly Property TargetContract() As Type Implements IContractBehaviorAttribute.TargetContract
    Get
        Return GetType(ISampleService)
    End Get
  End Property

  #End Region

  #Region "IContractBehavior Members"

  Public Sub AddBindingParameters(ByVal description As ContractDescription, ByVal endpoint As ServiceEndpoint, ByVal parameters As System.ServiceModel.Channels.BindingParameterCollection) Implements IContractBehavior.AddBindingParameters
    Return
  End Sub

  Public Sub ApplyClientBehavior(ByVal description As ContractDescription, ByVal endpoint As ServiceEndpoint, ByVal clientRuntime As ClientRuntime) Implements IContractBehavior.ApplyClientBehavior
    Return
  End Sub

  Public Sub ApplyDispatchBehavior(ByVal description As ContractDescription, ByVal endpoint As ServiceEndpoint, ByVal dispatch As DispatchRuntime) Implements IContractBehavior.ApplyDispatchBehavior
    dispatch.InstanceProvider = New ObjectProviderBehavior("Custom ObjectProviderBehavior constructor.")
  End Sub

  Public Sub Validate(ByVal description As ContractDescription, ByVal endpoint As ServiceEndpoint) Implements IContractBehavior.Validate
    Return
  End Sub

  #End Region
End Class

설명

이 메서드를 GetInstance(InstanceContext, Message) 사용하여 WCF 서비스가 새 서비스 개체를 만들려고 할 때 수신하는 정확한 서비스 개체를 제어합니다.

적용 대상

피드백

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