TransPullSubscription クラス
トランザクション パブリケーションへのプル サブスクリプションを表します。
名前空間: Microsoft.SqlServer.Replication
アセンブリ: Microsoft.SqlServer.Rmo (Microsoft.SqlServer.Rmo.dll)
構文
'宣言
Public NotInheritable Class TransPullSubscription _
Inherits PullSubscription
'使用
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
説明
プル サブスクリプションの場合、ディストリビューション エージェントは、サブスクライバ側で実行されます。
この名前空間、クラス、またはメンバは、.NET Framework 2.0 でのみサポートされています。
スレッド セーフ
この型の public static (Microsoft Visual Basic では Shared) のすべてのメンバは、マルチスレッド操作で安全に使用できます。インスタンス メンバの場合は、スレッド セーフであるとは限りません。
使用例
// 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 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 = "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 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
継承階層
System. . :: . .Object
Microsoft.SqlServer.Replication. . :: . .ReplicationObject
Microsoft.SqlServer.Replication. . :: . .PullSubscription
Microsoft.SqlServer.Replication..::..TransPullSubscription
スレッド セーフ
この型の public static (Visual Basic では Shared) のメンバーはすべて、スレッド セーフです。インスタンス メンバーの場合は、スレッド セーフであるとは限りません。