Classe MergeSubscription
Represents a subscription to a merge publication registered at the Publisher.
Spazio dei nomi: Microsoft.SqlServer.Replication
Assembly: Microsoft.SqlServer.Rmo (in Microsoft.SqlServer.Rmo.dll)
Sintassi
'Dichiarazione
Public NotInheritable Class MergeSubscription _
Inherits Subscription
'Utilizzo
Dim instance As MergeSubscription
public sealed class MergeSubscription : Subscription
public ref class MergeSubscription sealed : public Subscription
[<SealedAttribute>]
type MergeSubscription =
class
inherit Subscription
end
public final class MergeSubscription extends Subscription
Osservazioni
The MergeSubscription class is used with both pull and push subscriptions to a merge publication.
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 Crittografia delle connessioni a SQL Server.
This namespace, class, or member is supported only in version 2.0 of the Microsoft .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.
Esempi
// Define the Publisher, publication, and databases.
string publicationName = "AdvWorksSalesOrdersMerge";
string publisherName = publisherInstance;
string subscriberName = subscriberInstance;
string subscriptionDbName = "AdventureWorksReplica";
string publicationDbName = "AdventureWorks";
string hostname = @"adventure-works\garrett1";
//Create a connection to the Publisher.
ServerConnection conn = new ServerConnection(subscriberName);
// Create the objects that we need.
MergePublication publication;
MergeSubscription subscription;
try
{
// Connect to the Publisher.
conn.Connect();
// Ensure that the publication exists and that
// it supports push subscriptions.
publication = new MergePublication();
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 MergeSubscription();
subscription.ConnectionContext = conn;
subscription.SubscriberName = subscriberName;
subscription.PublicationName = publicationName;
subscription.DatabaseName = publicationDbName;
subscription.SubscriptionDBName = subscriptionDbName;
subscription.HostName = hostname;
// Set a schedule to synchronize the subscription every 2 hours
// during weekdays from 6am to 10pm.
subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.Weekly;
subscription.AgentSchedule.FrequencyInterval = Convert.ToInt32(0x003E);
subscription.AgentSchedule.FrequencyRecurrenceFactor = 1;
subscription.AgentSchedule.FrequencySubDay = ScheduleFrequencySubDay.Hour;
subscription.AgentSchedule.FrequencySubDayInterval = 2;
subscription.AgentSchedule.ActiveStartDate = 20051108;
subscription.AgentSchedule.ActiveEndDate = 20071231;
subscription.AgentSchedule.ActiveStartTime = 060000;
subscription.AgentSchedule.ActiveEndTime = 100000;
// Specify the Windows login credentials for the Merge Agent job.
subscription.SynchronizationAgentProcessSecurity.Login = winLogin;
subscription.SynchronizationAgentProcessSecurity.Password = winPassword;
// 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 = "AdvWorksSalesOrdersMerge"
Dim publisherName As String = publisherInstance
Dim subscriberName As String = subscriberInstance
Dim subscriptionDbName As String = "AdventureWorksReplica"
Dim publicationDbName As String = "AdventureWorks"
Dim hostname As String = "adventure-works\garrett1"
'Create a connection to the Publisher.
Dim conn As ServerConnection = New ServerConnection(subscriberName)
' Create the objects that we need.
Dim publication As MergePublication
Dim subscription As MergeSubscription
Try
' Connect to the Publisher.
conn.Connect()
' Ensure that the publication exists and that
' it supports push subscriptions.
publication = New MergePublication()
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 MergeSubscription()
subscription.ConnectionContext = conn
subscription.SubscriberName = subscriberName
subscription.PublicationName = publicationName
subscription.DatabaseName = publicationDbName
subscription.SubscriptionDBName = subscriptionDbName
subscription.HostName = hostname
' Set a schedule to synchronize the subscription every 2 hours
' during weekdays from 6am to 10pm.
subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.Weekly
subscription.AgentSchedule.FrequencyInterval = Convert.ToInt32("0x003E", 16)
subscription.AgentSchedule.FrequencyRecurrenceFactor = 1
subscription.AgentSchedule.FrequencySubDay = ScheduleFrequencySubDay.Hour
subscription.AgentSchedule.FrequencySubDayInterval = 2
subscription.AgentSchedule.ActiveStartDate = 20051108
subscription.AgentSchedule.ActiveEndDate = 20071231
subscription.AgentSchedule.ActiveStartTime = 60000
subscription.AgentSchedule.ActiveEndTime = 100000
' Specify the Windows login credentials for the Merge Agent job.
subscription.SynchronizationAgentProcessSecurity.Login = winLogin
subscription.SynchronizationAgentProcessSecurity.Password = winPassword
' 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
Gerarchia di ereditarietà
System. . :: . .Object
Microsoft.SqlServer.Replication. . :: . .ReplicationObject
Microsoft.SqlServer.Replication. . :: . .Subscription
Microsoft.SqlServer.Replication..::..MergeSubscription
Thread Safety
Tutti i membri pubblici static (Shared in Visual Basic) di questo tipo sono thread safe. I membri di istanza non hanno garanzia di essere thread safe.