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Cómo definir un artículo (programación con RMO)

Puede definir artículos mediante programación con los objetos de administración de replicación (RMO). Las clases RMO que usa para definir un artículo dependen del tipo de publicación para la que se define el artículo.

Para definir artículos para una publicación transaccional o de instantáneas

  1. Cree una conexión al Publicador mediante la clase ServerConnection.

  2. Cree una instancia de la clase TransArticle y establezca la propiedad ConnectionContext (heredada de ReplicationObject) a la instancia de ServerConnection del paso 1 y establezca las siguientes propiedades:

    • El nombre del artículo para Name.

    • El nombre de la publicación para PublicationName.

    • El nombre de la base de datos de publicación para DatabaseName.

    • (Opcional) Si el artículo tiene un filtro de fila estático, especifique la cláusula de filtro para la propiedad FilterClause.

  3. Llame al método Create.

  4. (Opcional) Si el artículo tiene filtros de columna:

    • Llame al método RemoveReplicatedColumns para quitar columnas del artículo. Pase una matriz de String de los nombres de columnas que desea quitar. Pase un valor null para quitar todas las columnas.

    • Llame al método AddReplicatedColumns para agregar columnas del artículo. Pase una matriz de String de los nombres de las columnas que desea agregar. Pase un valor null para agregar todas las columnas.

Para definir los artículos para una publicación de mezcla

  1. Cree una conexión al Publicador mediante la clase ServerConnection.

  2. Cree una instancia de la clase MergeArticle y establezca la propiedad ConnectionContext (heredada de ReplicationObject) a la instancia de ServerConnection del paso 1 y establezca las siguientes propiedades:

    • El nombre del artículo para Name.

    • El nombre de la publicación para PublicationName.

    • El nombre de la base de datos de publicación para DatabaseName.

    • (Opcional) Si se filtra el artículo horizontalmente, especifique la cláusula de filtro de filas para la propiedad FilterClause. Utilice esta propiedad para especificar un filtro de fila estático o con parámetros. Para obtener más información, vea Filtros de fila con parámetros.

  3. Llame al método Create.

  4. (Opcional) Si el artículo tiene columnas filtradas:

    • Llame al método RemoveReplicatedColumns para quitar columnas del artículo. Pase una matriz de String de los nombres de columnas que desea quitar. Pase un valor null para quitar todas las columnas.

    • Llame al método AddReplicatedColumns para agregar columnas del artículo. Pase una matriz de String de los nombres de las columnas que desea agregar. Pase un valor null para agregar todas las columnas.

  5. (Opcional) Si el artículo se debe filtrar dependiendo del filtro de filas definido en otro artículo, cree una instancia de la clase MergeJoinFilter para definir el filtro de combinación entre dos artículos. A continuación, establezca las siguientes propiedades:

    • El nombre del artículo secundario (del paso 2) que se está filtrando para la propiedad JoinArticleName.

    • El nombre del artículo filtrado existente al que se está uniendo este para la propiedad ArticleName.

    • Un nombre para el filtro de combinación para la propiedad FilterName.

    • La expresión que define la combinación para la propiedad JoinFilterClause.

    • Un valor JoinFilter para la propiedad FilterTypes.

    Para obtener más información, vea Filtros de combinación.

  6. (Opcional) Llame al método AddMergeJoinFilter en el objeto que representa el artículo filtrado del paso 2. Pase el objeto MergeJoinFilter del paso 5 para crear el filtro de combinación.

Ejemplo

El ejemplo siguiente agrega un artículo con filtros de filas y columnas a una publicación transaccional.

         // Define the Publisher, publication, and article names.
            string publisherName = publisherInstance;
            string publicationName = "AdvWorksProductTran";
            string publicationDbName = "AdventureWorks";
            string articleName = "Product";
            string schemaOwner = "Production";

            TransArticle article;

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

            // Create a filtered transactional articles in the following steps:
            // 1) Create the  article with a horizontal filter clause.
            // 2) Add columns to or remove columns from the article.
            try
            {
                // Connect to the Publisher.
                conn.Connect();

                // Define a horizontally filtered, log-based table article.
                article = new TransArticle();
                article.ConnectionContext = conn;
                article.Name = articleName;
                article.DatabaseName = publicationDbName;
                article.SourceObjectName = articleName;
                article.SourceObjectOwner = schemaOwner;
                article.PublicationName = publicationName;
                article.Type = ArticleOptions.LogBased;
                article.FilterClause = "DiscontinuedDate IS NULL";

                // Ensure that we create the schema owner at the Subscriber.
                article.SchemaOption |= CreationScriptOptions.Schema;

                if (!article.IsExistingObject)
                {
                    // Create the article.
                    article.Create();
                }
                else
                {
                    throw new ApplicationException(String.Format(
                        "The article {0} already exists in publication {1}.",
                        articleName, publicationName));
                }

                // Create an array of column names to remove from the article.
                String[] columns = new String[1];
                columns[0] = "DaysToManufacture";

                // Remove the column from the article.
                article.RemoveReplicatedColumns(columns);
            }
            catch (Exception ex)
            {
                // Implement appropriate error handling here.
                throw new ApplicationException("The article could not be created.", ex);
            }
            finally
            {
                conn.Disconnect();
            }
' Define the Publisher, publication, and article names.
Dim publisherName As String = publisherInstance
Dim publicationName As String = "AdvWorksProductTran"
Dim publicationDbName As String = "AdventureWorks"
Dim articleName As String = "Product"
Dim schemaOwner As String = "Production"

Dim article As TransArticle

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

' Create a filtered transactional articles in the following steps:
' 1) Create the  article with a horizontal filter clause.
' 2) Add columns to or remove columns from the article.
Try
    ' Connect to the Publisher.
    conn.Connect()

    ' Define a horizontally filtered, log-based table article.
    article = New TransArticle()
    article.ConnectionContext = conn
    article.Name = articleName
    article.DatabaseName = publicationDbName
    article.SourceObjectName = articleName
    article.SourceObjectOwner = schemaOwner
    article.PublicationName = publicationName
    article.Type = ArticleOptions.LogBased
    article.FilterClause = "DiscontinuedDate IS NULL"

    ' Ensure that we create the schema owner at the Subscriber.
    article.SchemaOption = article.SchemaOption Or _
    CreationScriptOptions.Schema

    If Not article.IsExistingObject Then
        ' Create the article.
        article.Create()
    Else
        Throw New ApplicationException(String.Format( _
         "The article {0} already exists in publication {1}.", _
         articleName, publicationName))
    End If

    ' Create an array of column names to remove from the article.
    Dim columns() As String = New String(0) {}
    columns(0) = "DaysToManufacture"

    ' Remove the column from the article.
    article.RemoveReplicatedColumns(columns)
Catch ex As Exception
    ' Implement appropriate error handling here.
    Throw New ApplicationException("The article could not be created.", ex)
Finally
    conn.Disconnect()
End Try

El ejemplo siguiente agrega tres artículos a una publicación de mezcla. Los artículos tienen filtros de columna y se usan dos filtros de combinación para propagar un filtro de fila con parámetros a los demás artículos.

          // Define the Publisher and publication names.
            string publisherName = publisherInstance;
            string publicationName = "AdvWorksSalesOrdersMerge";
            string publicationDbName = "AdventureWorks";

            // Specify article names.
            string articleName1 = "Employee";
            string articleName2 = "SalesOrderHeader";
            string articleName3 = "SalesOrderDetail";

            // Specify join filter information.
            string filterName12 = "SalesOrderHeader_Employee";
            string filterClause12 = "Employee.EmployeeID = " +
                "SalesOrderHeader.SalesPersonID";
            string filterName23 = "SalesOrderDetail_SalesOrderHeader";
            string filterClause23 = "SalesOrderHeader.SalesOrderID = " +
                "SalesOrderDetail.SalesOrderID";

            string salesSchema = "Sales";
            string hrSchema = "HumanResources";

            MergeArticle article1 = new MergeArticle();
            MergeArticle article2 = new MergeArticle();
            MergeArticle article3 = new MergeArticle();
            MergeJoinFilter filter12 = new MergeJoinFilter();
            MergeJoinFilter filter23 = new MergeJoinFilter();

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

            // Create three merge articles that are horizontally partitioned
            // using a parameterized row filter on Employee.EmployeeID, which is 
            // extended to the two other articles using join filters. 
            try
            {
                // Connect to the Publisher.
                conn.Connect();

                // Create each article. 
                // For clarity, each article is defined separately. 
                // In practice, iterative structures and arrays should 
                // be used to efficiently create multiple articles.

                // Set the required properties for the Employee article.
                article1.ConnectionContext = conn;
                article1.Name = articleName1;
                article1.DatabaseName = publicationDbName;
                article1.SourceObjectName = articleName1;
                article1.SourceObjectOwner = hrSchema;
                article1.PublicationName = publicationName;
                article1.Type = ArticleOptions.TableBased;

                // Define the parameterized filter clause based on Hostname.
                article1.FilterClause = "Employee.LoginID = HOST_NAME()";

                // Set the required properties for the SalesOrderHeader article.
                article2.ConnectionContext = conn;
                article2.Name = articleName2;
                article2.DatabaseName = publicationDbName;
                article2.SourceObjectName = articleName2;
                article2.SourceObjectOwner = salesSchema;
                article2.PublicationName = publicationName;
                article2.Type = ArticleOptions.TableBased;

                // Set the required properties for the SalesOrderDetail article.
                article3.ConnectionContext = conn;
                article3.Name = articleName3;
                article3.DatabaseName = publicationDbName;
                article3.SourceObjectName = articleName3;
                article3.SourceObjectOwner = salesSchema;
                article3.PublicationName = publicationName;
                article3.Type = ArticleOptions.TableBased;

                if (!article1.IsExistingObject) article1.Create();
                if (!article2.IsExistingObject) article2.Create();
                if (!article3.IsExistingObject) article3.Create();

                // Select published columns for SalesOrderHeader.
                // Create an array of column names to vertically filter out.
                // In this example, only one column is removed.
                String[] columns = new String[1];

                columns[0] = "CreditCardApprovalCode";

                // Remove the column.
                article2.RemoveReplicatedColumns(columns);

                // Define a merge filter clauses that filter 
                // SalesOrderHeader based on Employee and 
                // SalesOrderDetail based on SalesOrderHeader. 

                // Parent article.
                filter12.JoinArticleName = articleName1;
                // Child article.
                filter12.ArticleName = articleName2;
                filter12.FilterName = filterName12;
                filter12.JoinUniqueKey = true;
                filter12.FilterTypes = FilterTypes.JoinFilter;
                filter12.JoinFilterClause = filterClause12;

                // Add the join filter to the child article.
                article2.AddMergeJoinFilter(filter12);

                // Parent article.
                filter23.JoinArticleName = articleName2;
                // Child article.
                filter23.ArticleName = articleName3;
                filter23.FilterName = filterName23;
                filter23.JoinUniqueKey = true;
                filter23.FilterTypes = FilterTypes.JoinFilter;
                filter23.JoinFilterClause = filterClause23;

                // Add the join filter to the child article.
                article3.AddMergeJoinFilter(filter23);
            }
            catch (Exception ex)
            {
                // Do error handling here and rollback the transaction.
                throw new ApplicationException(
                    "The filtered articles could not be created", ex);
            }
            finally
            {
                conn.Disconnect();
            }
' Define the Publisher and publication names.
Dim publisherName As String = publisherInstance
Dim publicationName As String = "AdvWorksSalesOrdersMerge"
Dim publicationDbName As String = "AdventureWorks"

' Specify article names.
Dim articleName1 As String = "Employee"
Dim articleName2 As String = "SalesOrderHeader"
Dim articleName3 As String = "SalesOrderDetail"

' Specify join filter information.
Dim filterName12 As String = "SalesOrderHeader_Employee"
Dim filterClause12 As String = "Employee.EmployeeID = " + _
    "SalesOrderHeader.SalesPersonID"
Dim filterName23 As String = "SalesOrderDetail_SalesOrderHeader"
Dim filterClause23 As String = "SalesOrderHeader.SalesOrderID = " + _
    "SalesOrderDetail.SalesOrderID"

Dim salesSchema As String = "Sales"
Dim hrSchema As String = "HumanResources"

Dim article1 As MergeArticle = New MergeArticle()
Dim article2 As MergeArticle = New MergeArticle()
Dim article3 As MergeArticle = New MergeArticle()
Dim filter12 As MergeJoinFilter = New MergeJoinFilter()
Dim filter23 As MergeJoinFilter = New MergeJoinFilter()

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

' Create three merge articles that are horizontally partitioned
' using a parameterized row filter on Employee.EmployeeID, which is 
' extended to the two other articles using join filters. 
Try
    ' Connect to the Publisher.
    conn.Connect()

    ' Create each article. 
    ' For clarity, each article is defined separately. 
    ' In practice, iterative structures and arrays should 
    ' be used to efficiently create multiple articles.

    ' Set the required properties for the Employee article.
    article1.ConnectionContext = conn
    article1.Name = articleName1
    article1.DatabaseName = publicationDbName
    article1.SourceObjectName = articleName1
    article1.SourceObjectOwner = hrSchema
    article1.PublicationName = publicationName
    article1.Type = ArticleOptions.TableBased

    ' Define the parameterized filter clause based on Hostname.
    article1.FilterClause = "Employee.LoginID = HOST_NAME()"

    ' Set the required properties for the SalesOrderHeader article.
    article2.ConnectionContext = conn
    article2.Name = articleName2
    article2.DatabaseName = publicationDbName
    article2.SourceObjectName = articleName2
    article2.SourceObjectOwner = salesSchema
    article2.PublicationName = publicationName
    article2.Type = ArticleOptions.TableBased

    ' Set the required properties for the SalesOrderDetail article.
    article3.ConnectionContext = conn
    article3.Name = articleName3
    article3.DatabaseName = publicationDbName
    article3.SourceObjectName = articleName3
    article3.SourceObjectOwner = salesSchema
    article3.PublicationName = publicationName
    article3.Type = ArticleOptions.TableBased

    ' Create the articles, if they do not already exist.
    If article1.IsExistingObject = False Then
        article1.Create()
    End If
    If article2.IsExistingObject = False Then
        article2.Create()
    End If
    If article3.IsExistingObject = False Then
        article3.Create()
    End If

    ' Select published columns for SalesOrderHeader.
    ' Create an array of column names to vertically filter out.
    ' In this example, only one column is removed.
    Dim columns() As String = New String(0) {}

    columns(0) = "CreditCardApprovalCode"

    ' Remove the column.
    article2.RemoveReplicatedColumns(columns)

    ' Define a merge filter clauses that filter 
    ' SalesOrderHeader based on Employee and 
    ' SalesOrderDetail based on SalesOrderHeader. 

    ' Parent article.
    filter12.JoinArticleName = articleName1
    ' Child article.
    filter12.ArticleName = articleName2
    filter12.FilterName = filterName12
    filter12.JoinUniqueKey = True
    filter12.FilterTypes = FilterTypes.JoinFilter
    filter12.JoinFilterClause = filterClause12

    ' Add the join filter to the child article.
    article2.AddMergeJoinFilter(filter12)

    ' Parent article.
    filter23.JoinArticleName = articleName2
    ' Child article.
    filter23.ArticleName = articleName3
    filter23.FilterName = filterName23
    filter23.JoinUniqueKey = True
    filter23.FilterTypes = FilterTypes.JoinFilter
    filter23.JoinFilterClause = filterClause23

    ' Add the join filter to the child article.
    article3.AddMergeJoinFilter(filter23)

Catch ex As Exception
    ' Do error handling here and rollback the transaction.
    Throw New ApplicationException( _
        "The filtered articles could not be created", ex)
Finally
    conn.Disconnect()
End Try