Класс TransPullSubscription

Статья
02/02/2013

Represents a pull subscription to a transactional publication.

Иерархия наследования

System.Object
  Microsoft.SqlServer.Replication.ReplicationObject
    Microsoft.SqlServer.Replication.PullSubscription
      Microsoft.SqlServer.Replication.TransPullSubscription

Пространство имен: Microsoft.SqlServer.Replication
Сборка: Microsoft.SqlServer.Rmo (в Microsoft.SqlServer.Rmo.dll)

Синтаксис

'Декларация
Public NotInheritable Class TransPullSubscription _
    Inherits PullSubscription
'Применение
Dim instance As TransPullSubscription

public sealed class TransPullSubscription : PullSubscription

public ref class TransPullSubscription sealed : public PullSubscription

[<SealedAttribute>]
type TransPullSubscription =  
    class 
        inherit PullSubscription 
    end

public final class TransPullSubscription extends PullSubscription

Тип TransPullSubscription обеспечивает доступ к следующим элементам.

Конструкторы

	Имя	Описание
	TransPullSubscription()	Creates a new instance of the TransPullSubscription class.
	TransPullSubscription(String, String, String, String, ServerConnection)	Creates a new instance of the TransPullSubscription class with the properties that define a pull subscription.
	TransPullSubscription(String, String, String, String, ServerConnection, Boolean)	Creates a new instance of the TransPullSubscription class with the properties that define a pull subscription, and whether or not to create the agent job for the subscription.

В начало

Свойства

	Имя	Описание
	AgentJobId	Gets the ID of the agent job used to synchronize the subscription. (Производный от PullSubscription.)
	AgentOffload	Gets or sets whether or not the Synchronization Agent runs on a computer other than the one where the agent job was created. This property is no longer supported for Distributors running Microsoft SQL Server 2005 and later. (Производный от PullSubscription.)
	AgentOffloadServer	Gets or sets the name of the remote computer where the agent runs when using remote agent activation. (Производный от PullSubscription.)
	AgentSchedule	Gets the schedule for the agent job used to synchronize the subscription. (Производный от PullSubscription.)
	AltSnapshotFolder	Gets or sets the location where the publication snapshot files are obtained when the default snapshot location at the Distributor is not used. (Производный от PullSubscription.)
	Attributes	Gets or sets the attributes of a transactional publication that are supported by the subscription.
	CachePropertyChanges	Gets or sets whether to cache changes made to the replication properties or to apply them immediately. (Производный от ReplicationObject.)
	ConnectionContext	Gets or sets the connection to an instance of Microsoft SQL Server. (Производный от ReplicationObject.)
	CreateSyncAgentByDefault	Gets or sets whether or not the agent job used to start the Replication Agent to synchronize the subscription is created when the subscription is created. (Производный от PullSubscription.)
	DatabaseName	Gets or sets the name of the subscription database. (Производный от PullSubscription.)
	Description	Gets or sets a textual description of the pull subscription. (Производный от PullSubscription.)
	DistributorName	Gets or sets the instance of Microsoft SQL Server that is the Distributor and is distributing the publication to which the subscription subscribes. (Производный от PullSubscription.)
	DistributorSecurity	Gets the security context used to connect to the Distributor. (Производный от PullSubscription.)
	DtsPackageLocation	Gets or sets the location of the Data Transformation Services (DTS) package used with a transformable subscription.
	DtsPackageName	Gets or sets the Data Transformation Services (DTS) package name used in a transformable subscription.
	DtsPackagePassword	Sets the password that is used with a transformable subscription.
	EnabledForSynchronizationManager	Specifies whether or not the subscription can be synchronized using Windows Synchronization Manager. (Производный от PullSubscription.)
	FtpAddress	Инфраструктура. Gets or sets the IP address of the FTP server. (Производный от PullSubscription.)
	FtpLogin	Инфраструктура. Gets or sets the FTP login. (Производный от PullSubscription.)
	FtpPassword	Инфраструктура. Gets or sets the FTP password. (Производный от PullSubscription.)
	FtpPort	Инфраструктура. Gets or sets the port number for the FTP server. (Производный от PullSubscription.)
	IsExistingObject	Gets whether the object exists on the server or not. (Производный от ReplicationObject.)
	LastAgentDateTime	Gets the date and time when the subscription was last synchronized. (Производный от PullSubscription.)
	LastAgentStatus	Gets the status of the most recent synchronization of the subscription. (Производный от PullSubscription.)
	LastAgentSummary	Gets a summary of the result of the most recent synchronization of the subscription. (Производный от PullSubscription.)
	LastSummaryDateTime	Gets the date and time that the last synchronization was completed.
	Name	Gets the name generated for the pull subscription. (Производный от PullSubscription.)
	PublicationDBName	Gets or sets the name of the publication database. (Производный от PullSubscription.)
	PublicationName	Gets or sets the name of the publication to which the subscription subscribes. (Производный от PullSubscription.)
	PublisherName	Gets or sets the name of the Publisher. (Производный от PullSubscription.)
	PublisherSecurity	Gets or sets the security context used by the Synchronization Agent when connecting to the Publisher. (Производный от PullSubscription.)
	SecureFtpPassword	Инфраструктура. Gets or sets the secured password for the login used to connect to the FTP server. (Производный от PullSubscription.)
	SqlServerName	Gets the name of the Microsoft SQL Server instance to which this object is connected. (Производный от ReplicationObject.)
	SubscriberSecurity	Gets the security context that is used by the Synchronization Agent when connecting to the Subscriber. (Производный от PullSubscription.)
	SubscriberType	Gets or sets the updating behavior of the subscription.
	SubscriptionId	Gets the subscription ID value. (Производный от PullSubscription.)
	SubscriptionType	Gets whether the subscription registration is for a push, pull, or anonymous subscription. (Производный от PullSubscription.)
	SynchronizationAgent	Gets an object that represents an instance of the Distribution Agent that can be used to synchronize the subscription.
	SynchronizationAgentProcessSecurity	Gets the security context that is used to specify the Microsoft Windows account under which the Synchronization Agent job runs to synchronize the subscription. (Производный от PullSubscription.)
	Type	Инфраструктура. Gets or sets the publication type. (Производный от PullSubscription.)
	UseFtp	Gets or sets whether or not the snapshot files needed to initialize the pull subscription are accessed by the Synchronization Agent using File Transfer Protocol (FTP). (Производный от PullSubscription.)
	UserData	Gets or sets an object property that allows users to attach their own data to the object. (Производный от ReplicationObject.)
	WorkingDirectory	Gets or sets the path of the directory at the Subscriber that is used to temporarily store and decompress downloaded snapshot files. (Производный от PullSubscription.)

В начало

Методы

	Имя	Описание
	CommitPropertyChanges	Sends all the cached property change statements to the instance of Microsoft SQL Server. (Производный от ReplicationObject.)
	Create	Creates the pull subscription on the Subscriber. (Производный от PullSubscription.)
	Decouple	Decouples the referenced replication object from the server. (Производный от ReplicationObject.)
	Equals	(Производный от Object.)
	GetHashCode	(Производный от Object.)
	GetType	(Производный от Object.)
	LastAgentJobHistoryInfo	Returns information on the last Synchronization Agent job that was run. (Производный от PullSubscription.)
	Load	Loads the properties of an existing object from the server. (Производный от ReplicationObject.)
	LoadProperties	Loads the properties of an existing object from the server. (Производный от ReplicationObject.)
	Refresh	Reloads the properties of the object. (Производный от ReplicationObject.)
	Reinitialize	Marks the pull subscription for reinitialization.
	Remove	Removes the pull subscription. (Производный от PullSubscription.)
	Script	Returns a Transact-SQL script to create or delete the pull subscription based on the current property setting of the PullSubscription object. (Производный от PullSubscription.)
	StopSynchronizationJob	Attempts to stop a running Distribution Agent job that is currently synchronizing the subscription. (Переопределяет PullSubscription.StopSynchronizationJob().)
	SynchronizeWithJob	Starts the agent job to synchronize the subscription. (Переопределяет PullSubscription.SynchronizeWithJob().)
	ToString	(Производный от Object.)

В начало

Замечания

For a pull subscription, the Distribution Agent runs at the Subscriber.

Thread Safety

Any public static (Shared in Microsoft Visual Basic) members of this type are safe for multithreaded operations. Any instance members are not guaranteed to be thread safe.

Примеры

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

            //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 Publisher and Subscriber.
                subscriberConn.Connect();
                publisherConn.Connect();

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

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

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

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

                    // Make sure that the agent job for the subscription is created.
                    subscription.CreateSyncAgentByDefault = true;

                    // 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 pull subscription at the Subscriber.
                    subscription.Create();

                    Boolean registered = false;

                    // Verify that the subscription is not already registered.
                    foreach (TransSubscription existing
                        in publication.EnumSubscriptions())
                    {
                        if (existing.SubscriberName == subscriberName
                            && existing.SubscriptionDBName == subscriptionDbName)
                        {
                            registered = true;
                        }
                    }
                    if (!registered)
                    {
                        // Register the subscription with the Publisher.
                        publication.MakePullSubscriptionWellKnown(
                            subscriberName, subscriptionDbName,
                            SubscriptionSyncType.Automatic,
                            TransSubscriberType.ReadOnly);
                    }
                }
                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
            {
                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 = "AdventureWorks2012Replica"
Dim publicationDbName As String = "AdventureWorks2012"

'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 Publisher and Subscriber.
    subscriberConn.Connect()
    publisherConn.Connect()

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

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

        ' Define the pull subscription.
        subscription = New TransPullSubscription()
        subscription.ConnectionContext = subscriberConn
        subscription.PublisherName = publisherName
        subscription.PublicationName = publicationName
        subscription.PublicationDBName = publicationDbName
        subscription.DatabaseName = subscriptionDbName
        subscription.Description = "Pull subscription to " + publicationDbName _
        + " on " + subscriberName + "."

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

        ' Make sure that the agent job for the subscription is created.
        subscription.CreateSyncAgentByDefault = True

        ' 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 pull subscription at the Subscriber.
        subscription.Create()

        Dim registered As Boolean = False

        ' Verify that the subscription is not already registered.
        For Each existing As TransSubscription In publication.EnumSubscriptions()
            If existing.SubscriberName = subscriberName And _
                existing.SubscriptionDBName = subscriptionDbName Then
                registered = True
            End If
        Next existing
        If Not registered Then
            ' Register the subscription with the Publisher.
            publication.MakePullSubscriptionWellKnown( _
             subscriberName, subscriptionDbName, _
             SubscriptionSyncType.Automatic, _
             TransSubscriberType.ReadOnly)
        End If
    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
    subscriberConn.Disconnect()
    publisherConn.Disconnect()
End Try

Безопасность многопоточности

Любые открытые статический (Shared в Visual Basic) элементы этого типа потокобезопасны. Потокобезопасность с элементами экземпляров не гарантируется.

См. также

Справочник

Пространство имен Microsoft.SqlServer.Replication

Другие ресурсы

Как создать подписку по запросу (программирование объектов RMO)

Поделиться через

Класс TransPullSubscription

Иерархия наследования

Синтаксис

Конструкторы

Свойства

Методы

Замечания

Thread Safety

Примеры

Безопасность многопоточности

См. также

Справочник

Другие ресурсы

Дополнительные ресурсы