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Como excluir uma assinatura pull (Programação RMO)

Você pode criar assinaturas pull programaticamente, usando RMO (Replication Management Objects). As classes RMO que você usa para excluir uma assinatura pull dependem do tipo de publicação para a qual a assinatura pull é inscrita.

Para excluir uma assinatura pull em uma publicação de instantâneo ou transacional

  1. Crie conexões para o Assinante e Publicador, usando a classe ServerConnection .

  2. Crie uma instância da classe TransPullSubscription, defina o PublicationName, DatabaseName, PublisherName e as propriedades PublicationDBName . Use a conexão de Assinante da etapa 1 para definir a propriedade ConnectionContext .

  3. Verifique a propriedade IsExistingObject para verificar se a assinatura existe. Se o valor desta propriedade for false, as propriedades de assinatura na etapa 2 foram definidas incorretamente ou a assinatura não existe.

  4. Chame o método Remove.

  5. Crie uma instância da classe TransPublication usando a conexão com o Publicador da Etapa 1. Especifique Name, DatabaseName e ConnectionContext.

  6. Chame o método LoadProperties. Se esse método retornar false, as propriedades especificadas na etapa 5 estão incorretas ou a publicação não existe no servidor.

  7. Chame o método RemovePullSubscription. Especifique o nome do Assinante e o banco de dados de assinatura para o subscriber e parâmetros subscriberDB .

Para excluir uma assinatura pull em uma publicação de mesclagem.

  1. Crie conexões para o Assinante e Publicador, usando a classe ServerConnection .

  2. Crie uma instância da classe MergePullSubscription e defina o PublicationName, DatabaseName, PublisherName e as propriedades PublicationDBName . Use a conexão da etapa 1 para definir a propriedade ConnectionContext.

  3. Verifique a propriedade IsExistingObject para verificar se a assinatura existe. Se o valor dessa propriedade for false, as propriedades de assinatura na etapa 2 foram definidas incorretamente ou a assinatura não existe.

  4. Chame o método Remove.

  5. Crie uma instância da classe MergePublication, usando a conexão com o Publicador da etapa 1. Especifique Name, DatabaseName e ConnectionContext.

  6. Chame o método LoadProperties. Se esse método retornar false, as propriedades especificadas na etapa 5 estão incorretas ou a publicação não existe no servidor.

  7. Chame o método RemovePullSubscription. Especifique o nome do Assinante e o banco de dados de assinatura para o subscriber e parâmetros subscriberDB .

Exemplo

Esse exemplo exclui uma assinatura pull a uma publicação transacional e remove o registro de assinatura no Publicador.

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

            //Create connections to the Publisher and Subscriber.
            ServerConnection subscriberConn = new ServerConnection(subscriberName);
            ServerConnection publisherConn = new ServerConnection(publisherName);

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

            try
            {
                // Connect to the Subscriber.
                subscriberConn.Connect();

                // Define the pull subscription.
                subscription = new TransPullSubscription();
                subscription.ConnectionContext = subscriberConn;
                subscription.PublisherName = publisherName;
                subscription.PublicationName = publicationName;
                subscription.PublicationDBName = publicationDbName;
                subscription.DatabaseName = subscriptionDbName;

                // Define the publication.
                publication = new TransPublication();
                publication.Name = publicationName;
                publication.DatabaseName = publicationDbName;
                publication.ConnectionContext = publisherConn;

                // Delete the pull subscription, if it exists.
                if (subscription.IsExistingObject)
                {
                    if (publication.LoadProperties())
                    {
                        // Remove the pull subscription registration at the Publisher.
                        publication.RemovePullSubscription(subscriberName, subscriptionDbName);
                    }
                    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));
                    }
                    // Delete the pull subscription at the Subscriber.
                    subscription.Remove();
                }
                else
                {
                    throw new ApplicationException(String.Format(
                        "The subscription to {0} does not exist on {1}",
                        publicationName, subscriberName));
                }
            }
            catch (Exception ex)
            {
                // Implement the appropriate error handling here.
                throw new ApplicationException(String.Format(
                    "The subscription to {0} could not be deleted.", publicationName), ex);
            }
            finally
            {
                subscriberConn.Disconnect();
                publisherConn.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 = "AdventureWorksReplica"
Dim publicationDbName As String = "AdventureWorks"

'Create connections to the Publisher and Subscriber.
Dim subscriberConn As ServerConnection = New ServerConnection(subscriberName)
Dim publisherConn As ServerConnection = New ServerConnection(publisherName)

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

Try
    ' Connect to the Subscriber.
    subscriberConn.Connect()

    ' Define the pull subscription.
    subscription = New TransPullSubscription()
    subscription.ConnectionContext = subscriberConn
    subscription.PublisherName = publisherName
    subscription.PublicationName = publicationName
    subscription.PublicationDBName = publicationDbName
    subscription.DatabaseName = subscriptionDbName

    ' Define the publication.
    publication = New TransPublication()
    publication.Name = publicationName
    publication.DatabaseName = publicationDbName
    publication.ConnectionContext = publisherConn

    ' Delete the pull subscription, if it exists.
    If subscription.IsExistingObject Then

        If publication.LoadProperties() Then
            ' Remove the pull subscription registration at the Publisher.
            publication.RemovePullSubscription(subscriberName, subscriptionDbName)
        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
        ' Delete the pull subscription at the Subscriber.
        subscription.Remove()
    Else
        Throw New ApplicationException(String.Format( _
         "The subscription to {0} does not exist on {1}", _
         publicationName, subscriberName))
    End If
Catch ex As Exception
    ' Implement the appropriate error handling here.
    Throw New ApplicationException(String.Format( _
        "The subscription to {0} could not be deleted.", publicationName), ex)
Finally
    subscriberConn.Disconnect()
    publisherConn.Disconnect()
End Try

Esse exemplo exclui uma assinatura pull para uma publicação de mesclagem e remove o registro de assinatura no Publicador.

           // Define the Publisher, publication, and databases.
            string publicationName = "AdvWorksSalesOrdersMerge";
            string publisherName = publisherInstance;
            string subscriberName = subscriberInstance;
            string subscriptionDbName = "AdventureWorksReplica";
            string publicationDbName = "AdventureWorks";

            //Create connections to the Publisher and Subscriber.
            ServerConnection subscriberConn = new ServerConnection(subscriberName);
            ServerConnection publisherConn = new ServerConnection(publisherName);

            // Create the objects that we need.
            MergePublication publication;
            MergePullSubscription subscription;

            try
            {
                // Connect to the Subscriber.
                subscriberConn.Connect();

                // Define the pull subscription.
                subscription = new MergePullSubscription();
                subscription.ConnectionContext = subscriberConn;
                subscription.PublisherName = publisherName;
                subscription.PublicationName = publicationName;
                subscription.PublicationDBName = publicationDbName;
                subscription.DatabaseName = subscriptionDbName;

                // Define the publication.
                publication = new MergePublication();
                publication.Name = publicationName;
                publication.DatabaseName = publicationDbName;
                publication.ConnectionContext = publisherConn;

                // Delete the pull subscription, if it exists.
                if (subscription.IsExistingObject)
                {
                    // Delete the pull subscription at the Subscriber.
                    subscription.Remove();

                    if (publication.LoadProperties())
                    {
                        publication.RemovePullSubscription(subscriberName, subscriptionDbName);
                    }
                    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));
                    }
                }
                else
                {
                    throw new ApplicationException(String.Format(
                        "The subscription to {0} does not exist on {1}",
                        publicationName, subscriberName));
                }
            }
            catch (Exception ex)
            {
                // Implement the appropriate error handling here.
                throw new ApplicationException(String.Format(
                    "The subscription to {0} could not be deleted.", publicationName), ex);
            }
            finally
            {
                subscriberConn.Disconnect();
                publisherConn.Disconnect();
            }
' Define the Publisher, publication, and databases.
Dim publicationName As String = "AdvWorksSalesOrdersMerge"
Dim publisherName As String = publisherInstance
Dim subscriberName As String = subscriberInstance
Dim subscriptionDbName As String = "AdventureWorksReplica"
Dim publicationDbName As String = "AdventureWorks"

'Create connections to the Publisher and Subscriber.
Dim subscriberConn As ServerConnection = New ServerConnection(subscriberName)
Dim publisherConn As ServerConnection = New ServerConnection(publisherName)

' Create the objects that we need.
Dim publication As MergePublication
Dim subscription As MergePullSubscription

Try
    ' Connect to the Subscriber.
    subscriberConn.Connect()

    ' Define the pull subscription.
    subscription = New MergePullSubscription()
    subscription.ConnectionContext = subscriberConn
    subscription.PublisherName = publisherName
    subscription.PublicationName = publicationName
    subscription.PublicationDBName = publicationDbName
    subscription.DatabaseName = subscriptionDbName

    ' Define the publication.
    publication = New MergePublication()
    publication.Name = publicationName
    publication.DatabaseName = publicationDbName
    publication.ConnectionContext = publisherConn

    ' Delete the pull subscription, if it exists.
    If subscription.IsExistingObject Then

        ' Delete the pull subscription at the Subscriber.
        subscription.Remove()

        If publication.LoadProperties() Then
            publication.RemovePullSubscription(subscriberName, subscriptionDbName)
        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
    Else
        Throw New ApplicationException(String.Format( _
         "The subscription to {0} does not exist on {1}", _
         publicationName, subscriberName))
    End If
Catch ex As Exception
    ' Implement the appropriate error handling here.
    Throw New ApplicationException(String.Format( _
        "The subscription to {0} could not be deleted.", publicationName), ex)
Finally
    subscriberConn.Disconnect()
    publisherConn.Disconnect()
End Try