Класс TransSubscription

Represents a push subscription to a transactional or snapshot publication.

Иерархия наследования

System. . :: . .Object
  Microsoft.SqlServer.Replication. . :: . .ReplicationObject
    Microsoft.SqlServer.Replication. . :: . .Subscription
      Microsoft.SqlServer.Replication..::..TransSubscription

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

Синтаксис

'Декларация
Public NotInheritable Class TransSubscription _
    Inherits Subscription
'Применение
Dim instance As TransSubscription

public sealed class TransSubscription : Subscription

public ref class TransSubscription sealed : public Subscription

[<SealedAttribute>]
type TransSubscription =  
    class
        inherit Subscription
    end

public final class TransSubscription extends Subscription

Тип TransSubscription обеспечивает доступ к следующим элементам.

Конструкторы

	Имя	Описание
	TransSubscription() () () ()	Creates a new instance of the TransSubscription class.
	TransSubscription(String, String, String, String, ServerConnection)	Creates a new instance of the TransSubscription class with the specified publication, database, Subscriber, and subscriber database, and with the specified connection to the instance of Microsoft SQL Server.

В начало

Свойства

	Имя	Описание
	AgentJobId	Gets the ID of the agent job used to synchronize the subscription. (Производный от Subscription.)
	AgentOffload	Gets or sets whether 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 Subscription.)
	AgentOffloadServer	Gets or sets the name of the remote computer where the agent runs when using remote agent activation. (Производный от Subscription.)
	AgentSchedule	Gets the schedule for the agent job used to synchronize the subscription. (Производный от Subscription.)
	BackupInformation	Gets or sets information needed to initialize a subscription from a backup.
	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 the agent job used to synchronize the subscription is created by default. (Производный от Subscription.)
	DatabaseName	Gets or sets the name of the publication database. (Производный от Subscription.)
	DtsPackageLocation	Gets or sets the location of the Microsoft SQL Server 2000 Data Transformation Services (DTS) package.
	DtsPackageName	Gets or sets the name of the Microsoft SQL Server 2000 Data Transformation Services (DTS) package that is applied at the Subscriber.
	DtsPackagePassword	Sets the password used to run the Microsoft SQL Server 2000 Data Transformation Services (DTS) package.
	EnabledForSynchronizationManager	Specifies whether the subscription can be synchronized using Microsoft Windows Synchronization Manager. (Производный от Subscription.)
	FullSubscription	Инфраструктура.
	IsExistingObject	Gets whether the object exists on the server or not. (Производный от ReplicationObject.)
	LoopBackDetection	Gets or sets whether or not the Distribution Agent sends transactions that originated at the Subscriber back to the Subscriber.
	Name	Gets the name assigned to an existing subscription. (Производный от Subscription.)
	PublicationName	Gets or sets the name of the publication to which the subscription subscribes. (Производный от Subscription.)
	PublisherName	Gets or sets the name of the Publisher when the subscription belongs to a non- SQL Server Publisher.
	SecureDtsPackagePassword	Sets the password (as a SecureString object) used to run the Microsoft SQL Server 2000 Data Transformation Services (DTS) package.
	SqlServerName	Gets the name of the Microsoft SQL Server instance to which this object is connected. (Производный от ReplicationObject.)
	Status	Gets the status of the subscription. (Производный от Subscription.)
	SubscriberCatalog	Gets or sets the catalog used when making a connection to the OLE DB provider for a non-SQL Server Subscriber.
	SubscriberDatasource	Name of the data source as understood by the OLE DB provider for a non-SQL Server Subscriber.
	SubscriberDatasourceType	Identifies the type of data source that is a non-SQL Server Subscriber.
	SubscriberLocation	Location of the database as understood by the OLE DB provider for the non-SQL Server Subscriber.
	SubscriberName	Gets or sets the name of the instance of Microsoft SQL Server that is the Subscriber. (Производный от Subscription.)
	SubscriberProvider	Unique programmatic identifier (PROGID) with which the OLE DB provider for the non-SQL Server Subscriber is registered
	SubscriberProviderString	OLE DB provider-specific connection string is used to connect to the data source for non-SQL Server Subscribers.
	SubscriberSecurity	Gets the security context used to connect to the Subscriber. (Производный от Subscription.)
	SubscriberType	Gets or sets the updating behavior for data changes at the Subscriber.
	SubscriptionDBName	Gets or sets the name of the database on the Subscriber that receives the replicated data. (Производный от Subscription.)
	SubscriptionLSN
	SubscriptionType	Gets whether the subscription registration is for a push or pull subscription. (Производный от Subscription.)
	SynchronizationAgent	Gets an instance of the TransSynchronizationAgent class that can be used to synchronize the subscription.
	SynchronizationAgentName	Gets or sets the name of the agent job created to synchronize the subscription. (Производный от 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 Subscription.)
	SyncType	Gets or sets the manner in which the subscription is initialized. (Производный от Subscription.)
	UserData	Gets or sets an object property that allows users to attach their own data to the object. (Производный от ReplicationObject.)

В начало

Методы

	Имя	Описание
	CheckValidCreation	Инфраструктура. (Производный от ReplicationObject.)
	CheckValidDefinition	Инфраструктура. (Производный от Subscription.)
	CommitPropertyChanges	Sends all the cached property change statements to the instance of Microsoft SQL Server. (Производный от ReplicationObject.)
	Create	Creates the subscription registration at the Publisher. (Производный от Subscription.)
	Decouple	Decouples the referenced replication object from the server. (Производный от ReplicationObject.)
	Equals	(Производный от Object.)
	Finalize	(Производный от Object.)
	GetChangeCommand	Инфраструктура. (Производный от ReplicationObject.)
	GetCreateCommand	Инфраструктура. (Производный от ReplicationObject.)
	GetDropCommand	Инфраструктура. (Производный от ReplicationObject.)
	GetHashCode	(Производный от Object.)
	GetType	(Производный от Object.)
	InternalRefresh	Инфраструктура. (Производный от ReplicationObject.)
	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.)
	MemberwiseClone	(Производный от Object.)
	Refresh	Reloads the properties of the object. (Производный от ReplicationObject.)
	Reinitialize() () () ()	Marks the subscription for reinitialization the next time the Distribution Agent runs to synchronize the subscription.
	Reinitialize(Boolean)
	Remove	Deletes the subscription registration at the Publisher and removes replication objects at the Subscriber for a push subscription. (Производный от Subscription.)
	Script	Returns a Transact-SQL script that can be used to create or delete the subscription. (Производный от Subscription.)
	StopSynchronizationJob	Attempts to stop a running Distribution Agent job that is currently synchronizing the subscription.
	SynchronizeWithJob	Starts the agent job to synchronize the subscription.
	ToString	(Производный от Object.)

В начало

Замечания

When configuring a Publisher with a remote Distributor, the values supplied for all parameters, including SynchronizationAgentProcessSecurity, are sent to the Distributor as plain text. You should encrypt the connection between the Publisher and its remote Distributor before calling the Create method. For more information, see Шифрование соединений с SQL Server.

When the subscription belongs to a non-SQL Server Publisher, the ConnectionContext property is set to the Distributor instead of Publisher, the DatabaseName property is set to the distribution database instead of the publication database, and the PublisherName property is set to the name of the non-SQL Server Publisher.

This namespace, class, or member is supported only in version 2.0 of the .NET Framework.

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 = "AdventureWorks2008R2Replica";
            string publicationDbName = "AdventureWorks2008R2";

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

            // 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 = "AdventureWorks2008R2Replica"
Dim publicationDbName As String = "AdventureWorks2008R2"

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

' 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

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 создавать принудительные подписки (программирование объектов RMO)