TransSubscription Clase

Definición

public ref class TransSubscription sealed : Microsoft::SqlServer::Replication::Subscription

public sealed class TransSubscription : Microsoft.SqlServer.Replication.Subscription

type TransSubscription = class
    inherit Subscription

Public NotInheritable Class TransSubscription
Inherits Subscription

Herencia

Object

ReplicationObject

Subscription

TransSubscription

Ejemplos

           // Define the Publisher, publication, and databases.
           string publicationName = "AdvWorksProductTran";
           string publisherName = publisherInstance;
           string subscriberName = subscriberInstance;
           string subscriptionDbName = "AdventureWorks2012Replica";
           string publicationDbName = "AdventureWorks2012";

           //Create a connection to the Publisher.
           ServerConnection conn = new ServerConnection(publisherName);

           // Create the objects that we need.
           TransPublication publication;
           TransSubscription subscription;

           try
           {
               // Connect to the Publisher.
               conn.Connect();

               // Ensure that the publication exists and that 
               // it supports push subscriptions.
               publication = new TransPublication();
               publication.Name = publicationName;
               publication.DatabaseName = publicationDbName;
               publication.ConnectionContext = conn;

               if (publication.IsExistingObject)
               {
                   if ((publication.Attributes & PublicationAttributes.AllowPush) == 0)
                   {
                       publication.Attributes |= PublicationAttributes.AllowPush;
                   }

                   // Define the push subscription.
                   subscription = new TransSubscription();
                   subscription.ConnectionContext = conn;
                   subscription.SubscriberName = subscriberName;
                   subscription.PublicationName = publicationName;
                   subscription.DatabaseName = publicationDbName;
                   subscription.SubscriptionDBName = subscriptionDbName;

                   // Specify the Windows login credentials for the Distribution Agent job.
                   subscription.SynchronizationAgentProcessSecurity.Login = winLogin;
                   subscription.SynchronizationAgentProcessSecurity.Password = winPassword;

                   // By default, subscriptions to transactional publications are synchronized 
                   // continuously, but in this case we only want to synchronize on demand.
                   subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.OnDemand;

                   // Create the push subscription.
                   subscription.Create();
               }
               else
               {
                   // Do something here if the publication does not exist.
                   throw new ApplicationException(String.Format(
                       "The publication '{0}' does not exist on {1}.",
                       publicationName, publisherName));
               }
           }
           catch (Exception ex)
           {
               // Implement the appropriate error handling here.
               throw new ApplicationException(String.Format(
                   "The subscription to {0} could not be created.", publicationName), ex);
           }
           finally
           {
               conn.Disconnect();
           }

' Define the Publisher, publication, and databases.
Dim publicationName As String = "AdvWorksProductTran"
Dim publisherName As String = publisherInstance
Dim subscriberName As String = subscriberInstance
Dim subscriptionDbName As String = "AdventureWorks2012Replica"
Dim publicationDbName As String = "AdventureWorks2012"

'Create a connection to the Publisher.
Dim conn As ServerConnection = New ServerConnection(publisherName)

' Create the objects that we need.
Dim publication As TransPublication
Dim subscription As TransSubscription

Try
    ' Connect to the Publisher.
    conn.Connect()

    ' Ensure that the publication exists and that 
    ' it supports push subscriptions.
    publication = New TransPublication()
    publication.Name = publicationName
    publication.DatabaseName = publicationDbName
    publication.ConnectionContext = conn

    If publication.IsExistingObject Then
        If (publication.Attributes And PublicationAttributes.AllowPush) = 0 Then
            publication.Attributes = publication.Attributes _
            Or PublicationAttributes.AllowPush
        End If

        ' Define the push subscription.
        subscription = New TransSubscription()
        subscription.ConnectionContext = conn
        subscription.SubscriberName = subscriberName
        subscription.PublicationName = publicationName
        subscription.DatabaseName = publicationDbName
        subscription.SubscriptionDBName = subscriptionDbName

        ' Specify the Windows login credentials for the Distribution Agent job.
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword

        ' By default, subscriptions to transactional publications are synchronized 
        ' continuously, but in this case we only want to synchronize on demand.
        subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.OnDemand

        ' Create the push subscription.
        subscription.Create()
    Else
        ' Do something here if the publication does not exist.
        Throw New ApplicationException(String.Format( _
         "The publication '{0}' does not exist on {1}.", _
         publicationName, publisherName))
    End If

Catch ex As Exception
    ' Implement the appropriate error handling here.
    Throw New ApplicationException(String.Format( _
        "The subscription to {0} could not be created.", publicationName), ex)
Finally
    conn.Disconnect()
End Try

Comentarios

Al configurar un Publisher con un distribuidor remoto, los valores suministrados para todos los parámetros, incluido SynchronizationAgentProcessSecurity, se envían al distribuidor en texto plano. Debe cifrar la conexión entre el publicador y su distribuidor remoto antes de llamar al método Create . Para más información, véase sp_reinitsubscription (Transact-SQL).

Cuando la suscripción pertenece a una no SQL Server Publisher, la ConnectionContext propiedad se establece como el Distribuidor en lugar de Publisher, la DatabaseName propiedad se asigna a la base de datos de distribución en lugar de la base de datos de publicación, y la PublisherName propiedad se establece al nombre del no SQL Server Publisher.

Seguridad de hilos

Cualquier miembro público estático (Shareden Microsoft Visual Basic) de este tipo es seguro para operaciones multihilo. No se garantiza que los miembros de instancia sean seguros para el acceso concurrente.

Consulte también

• Cómo hacerlo: Crear una suscripción Push (RMO Programming)