如何：定義發行項 (RMO 程式設計)
您可以使用「複寫管理物件」(RMO) 以程式設計的方式定義發行項。用於定義發行項的 RMO 類別，將取決於定義發行項的發行集類型而定。
為快照式或交易式發行集定義發行項
使用ServerConnection 類別建立與發行者的連接。
建立 TransArticle 類別的執行個體、將 ConnectionContext 屬性 (繼承自 ReplicationObject) 設定為步驟 1 中的 ServerConnection 執行個體，並設定下列屬性：
將 Name 設定為發行項名稱。
將 PublicationName 設定為發行集名稱。
將 DatabaseName 設定為發行集資料庫名稱。
(選擇性) 如果此發行項有靜態資料列篩選，請為 FilterClause 屬性指定篩選子句。
呼叫 Create 方法。
(選擇性) 如果發行項有資料行篩選：
呼叫 RemoveReplicatedColumns 方法從發行項中移除資料行。傳遞要移除之資料行名稱的 String 陣列。傳遞 null 值來移除所有資料行。
呼叫 AddReplicatedColumns 方法將資料行加入發行項中。傳遞要加入之資料行名稱的 String 陣列。傳遞 null 值來加入所有資料行。
為合併式發行集定義發行項
使用ServerConnection 類別建立與發行者的連接。
建立 MergeArticle 類別的執行個體、將 ConnectionContext 屬性 (繼承自 ReplicationObject) 設定為步驟 1 中的 ServerConnection 執行個體，並設定下列屬性：
將 Name 設定為發行項名稱。
將 PublicationName 設定為發行集名稱。
將 DatabaseName 設定為發行集資料庫名稱。
(選擇性) 如果以水平方式篩選此發行項，請為 FilterClause 屬性指定資料列篩選子句。使用此屬性可指定靜態或參數化資料列篩選器。如需詳細資訊，請參閱＜參數化資料列篩選器＞。
呼叫 Create 方法。
(選擇性) 如果發行項已篩選資料行：
呼叫 RemoveReplicatedColumns 方法從發行項中移除資料行。傳遞要移除之資料行名稱的 String 陣列。傳遞 null 值來移除所有資料行。
呼叫 AddReplicatedColumns 方法將資料行加入發行項中。傳遞要加入之資料行名稱的 String 陣列。傳遞 null 值來加入所有資料行。
(選擇性) 如果此發行項必須根據另一個發行項中所定義的資料列篩選來進行篩選，請建立 MergeJoinFilter 類別的執行個體來定義兩個發行項之間的聯結篩選。然後，設定下列屬性：
將 JoinArticleName 屬性設定為所篩選的子發行項名稱 (來自步驟 2)。
將 ArticleName 屬性設定為這個發行項所聯結的現有已篩選發行項名稱。
將 FilterName 屬性設定為聯結篩選的名稱。
將 JoinFilterClause 屬性設定為定義此聯結的運算式。
將 FilterTypes 屬性設定為 JoinFilter 的值。
如需詳細資訊，請參閱＜聯結篩選＞。
(選擇性) 在代表步驟 2 中已篩選之發行項的物件上呼叫 AddMergeJoinFilter 方法。傳遞步驟 5 中的 MergeJoinFilter 物件來建立聯結篩選。
範例
下列範例會將具有資料列篩選和資料行篩選的發行項加入交易式發行集中。
// 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
下列範例會將三個發行項加入合併式發行集中。這些發行項具有資料行篩選，而且會使用兩個聯結篩選將參數化資料列篩選列傳播至其他發行項。
// 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