ReplicationObject.CachePropertyChanges Proprietà

Definizione

Spazio dei nomi:

Microsoft.SqlServer.Replication

Assembly:

Microsoft.SqlServer.Rmo.dll

Ottiene o imposta un valore che indica se memorizzare nella cache o se applicare immediatamente le modifiche apportate alle proprietà di replica.

public:
 property bool CachePropertyChanges { bool get(); void set(bool value); };

public bool CachePropertyChanges { get; set; }

member this.CachePropertyChanges : bool with get, set

Public Property CachePropertyChanges As Boolean

Valore della proprietà

Boolean

Valore Boolean. Se true, le modifiche alle proprietà vengono memorizzate nella cache. Se false, le modifiche alle proprietà vengono applicate immediatamente.

Esempio

// Define the server, database, and publication names
string publisherName = publisherInstance;
string publicationName = "AdvWorksProductTran";
string publicationDbName = "AdventureWorks2012";

TransPublication publication;

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

try
{
    // Connect to the Publisher.
    conn.Connect();

    // Set the required properties for the publication.
    publication = new TransPublication();
    publication.ConnectionContext = conn;
    publication.Name = publicationName;
    publication.DatabaseName = publicationDbName;

    // Explicitly enable caching of property changes on this object.
    publication.CachePropertyChanges = true;

    // If we can't get the properties for this publication, 
    // throw an application exception.
    if (publication.LoadProperties())
    {
        // Enable support for push subscriptions and disable support 
        // for pull subscriptions.
        if ((publication.Attributes & PublicationAttributes.AllowPull) != 0)
        {
            publication.Attributes ^= PublicationAttributes.AllowPull;
        }
        if ((publication.Attributes & PublicationAttributes.AllowPush) == 0)
        {
            publication.Attributes |= PublicationAttributes.AllowPush;
        }

        // Send changes to the server.
        publication.CommitPropertyChanges();
    }
    else
    {
        throw new ApplicationException(String.Format(
            "Settings could not be retrieved for the publication. " +
            "Ensure that the publication {0} exists on {1}.",
            publicationName, publisherName));
    }
}
catch (Exception ex)
{
    // Do error handling here.
    throw new ApplicationException(
        "The publication property could not be changed.", ex);
}
finally
{
    conn.Disconnect();
}

' Define the server, database, and publication names
Dim publisherName As String = publisherInstance
Dim publicationName As String = "AdvWorksProductTran"
Dim publicationDbName As String = "AdventureWorks2012"

Dim publication As TransPublication

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

Try
    ' Connect to the Publisher.
    conn.Connect()

    ' Set the required properties for the publication.
    publication = New TransPublication()
    publication.ConnectionContext = conn
    publication.Name = publicationName
    publication.DatabaseName = publicationDbName

    ' Explicitly enable caching of property changes on this object.
    publication.CachePropertyChanges = True

    ' If we can't get the properties for this publication, 
    ' throw an application exception.
    If publication.LoadProperties() Then
        ' Enable support for push subscriptions and disable support 
        ' for pull subscriptions.
        If (publication.Attributes And PublicationAttributes.AllowPull) <> 0 Then
            publication.Attributes = publication.Attributes _
            Xor PublicationAttributes.AllowPull
        End If
        If (publication.Attributes And PublicationAttributes.AllowPush) = 0 Then
            publication.Attributes = publication.Attributes _
            Or PublicationAttributes.AllowPush
        End If

        ' Send changes to the server.
        publication.CommitPropertyChanges()
    Else
        Throw New ApplicationException(String.Format( _
         "Settings could not be retrieved for the publication. " + _
         "Ensure that the publication {0} exists on {1}.", _
         publicationName, publisherName))
    End If
Catch ex As Exception
    ' Do error handling here.
    Throw New ApplicationException( _
        "The publication property could not be changed.", ex)
Finally
    conn.Disconnect()
End Try

Commenti

Quando il valore di CachePropertyChanges è false, le modifiche alle proprietà vengono impostate immediatamente in base alla SqlExecutionModes proprietà dell'oggetto ServerConnection . Quando il valore è impostato su true, le modifiche alle proprietà verranno memorizzate nella cache fino a quando CommitPropertyChanges non viene chiamato . Quando CommitPropertyChanges viene chiamato , tutte le modifiche apportate alle proprietà vengono impostate in CachePropertyChanges base alla SqlExecutionModes proprietà .

La memorizzazione nella cache si applica solo alle proprietà archiviate in Microsoft SQL Server.

Il valore predefinito di CachePropertyChanges è false.