Bagikan melalui

  • Artikel

How to: View and Modify Article Properties (RMO Programming)

You can modify articles and access their properties programmatically by using Replication Management Objects (RMO). The RMO classes you use to view or modify article properties depend on the type of publication to which the article belongs.

To view or modify properties of an article that belongs to a snapshot or transactional publication

  1. Create a connection to the Publisher by using the ServerConnection class.

  2. Create an instance of the TransArticle class.

  3. Set the Name, PublicationName, and DatabaseName properties.

  4. Set the connection from step 1 for the ConnectionContext property.

  5. Call the LoadProperties method to get the properties of the object. If this method returns false, either the article properties in step 3 were defined incorrectly or the article does not exist.

  6. (Optional) To change properties, set a new value for one of the TransArticle properties that can be set.

  7. (Optional) If you specified a value of true for CachePropertyChanges, call the CommitPropertyChanges method to commit changes on the server. If you specified a value of false for CachePropertyChanges (the default), changes are sent to the server immediately.

To view or modify properties of an article that belongs to a merge publication

  1. Create a connection to the Publisher by using the ServerConnection class.

  2. Create an instance of the MergeArticle class.

  3. Set the Name, PublicationName, and DatabaseName properties.

  4. Set the connection from step 1 for the ConnectionContext property.

  5. Call the LoadProperties method to get the properties of the object. If this method returns false, either the article properties in step 3 were defined incorrectly or the article does not exist.

  6. (Optional) To change properties, set a new value for one of the MergeArticle properties that can be set.

  7. (Optional) If you specified a value of true for CachePropertyChanges, call the CommitPropertyChanges method to commit changes on the server. If you specified a value of false for CachePropertyChanges (the default), changes are sent to the server immediately.

Example

This example changes a merge article to specify the business logic handler used by the article.

         // Define the Publisher, publication, and article names.
            string publisherName = publisherInstance;
            string publicationName = "AdvWorksSalesOrdersMerge";
            string publicationDbName = "AdventureWorks2008R2";
            string articleName = "SalesOrderHeader";
            
            // Set the friendly name of the business logic handler.
            string customLogic = "OrderEntryLogic";

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

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

                // Set the required properties for the article.
                article.ConnectionContext = conn;
                article.Name = articleName;
                article.DatabaseName = publicationDbName;
                article.PublicationName = publicationName;

                // Load the article properties.
                if (article.LoadProperties())
                {
                    article.ArticleResolver = customLogic;
                }
                else
                {
                    // Throw an exception of the article does not exist.
                    throw new ApplicationException(String.Format(
                    "{0} is not published in {1}", articleName, publicationName));
                }
                
            }
            catch (Exception ex)
            {
                // Do error handling here and rollback the transaction.
                throw new ApplicationException(String.Format(
                    "The business logic handler {0} could not be associated with " +
                    " the {1} article.",customLogic,articleName), ex);
            }
            finally
            {
                conn.Disconnect();
            }

' Define the Publisher, publication, and article names.
Dim publisherName As String = publisherInstance
Dim publicationName As String = "AdvWorksSalesOrdersMerge"
Dim publicationDbName As String = "AdventureWorks2008R2"
Dim articleName As String = "SalesOrderHeader"

' Set the friendly name of the business logic handler.
Dim customLogic As String = "OrderEntryLogic"

Dim article As MergeArticle = New MergeArticle()

' 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 article.
    article.ConnectionContext = conn
    article.Name = articleName
    article.DatabaseName = publicationDbName
    article.PublicationName = publicationName

    ' Load the article properties.
    If article.LoadProperties() Then
        article.ArticleResolver = customLogic
    Else
        ' Throw an exception of the article does not exist.
        Throw New ApplicationException(String.Format( _
         "{0} is not published in {1}", articleName, publicationName))
    End If

Catch ex As Exception
    ' Do error handling here and rollback the transaction.
    Throw New ApplicationException(String.Format( _
     "The business logic handler {0} could not be associated with " + _
     " the {1} article.", customLogic, articleName), ex)
Finally
    conn.Disconnect()
End Try