MergeArticle Class

Definition

Namespace:

Microsoft.SqlServer.Replication

Assembly:

Microsoft.SqlServer.Rmo.dll

Represents an article in a merge publication.

public ref class MergeArticle sealed : Microsoft::SqlServer::Replication::Article

public sealed class MergeArticle : Microsoft.SqlServer.Replication.Article

type MergeArticle = class
    inherit Article

Public NotInheritable Class MergeArticle
Inherits Article

Inheritance

Object

ReplicationObject

Article

MergeArticle

Examples

This example creates three merge articles and their related join filters.

// Define the Publisher and publication names.
string publisherName = publisherInstance;
string publicationName = "AdvWorksSalesOrdersMerge";
string publicationDbName = "AdventureWorks2012";

// 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 = "AdventureWorks2012"

' 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

This example changes and existing merge article to associate a business logic handler with the article. For more information, see sp_helpmergearticlecolumn (Transact-SQL)).

// Define the Publisher, publication, and article names.
string publisherName = publisherInstance;
string publicationName = "AdvWorksSalesOrdersMerge";
string publicationDbName = "AdventureWorks2012";
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 = "AdventureWorks2012"
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

Remarks

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.

Constructors

MergeArticle()	Creates a new instance of the MergeArticle class.
MergeArticle(String, String, String, ServerConnection)	Creates a new instance of the MergeArticle class with the specified name, publication, database, and connection to the instance of Microsoft SQL Server.

Properties

AllowInteractiveResolver	Gets or sets whether to allow subscriptions to invoke an interactive resolver when conflicts occur during synchronization.
ArticleId	Gets the article ID value. (Inherited from Article)
ArticleResolver	Gets or sets the friendly name of the custom conflict resolver or business logic handler used when synchronizing the article.
CachePropertyChanges	Gets or sets whether to cache changes made to the replication properties or to apply them immediately. (Inherited from ReplicationObject)
CheckPermissions	Gets or sets how the permissions are checked at the Publisher before changes are uploaded from a Subscriber.
ColumnTracking	Gets or sets how conflicts are detected when synchronizing data rows.
CompensateForErrors	Gets or sets whether compensating actions are taken when errors are encountered during synchronization.
ConflictTable	Gets the name of the table used to track conflicts that occur when synchronizing a merge article.
ConnectionContext	Gets or sets the connection to an instance of Microsoft SQL Server. (Inherited from ReplicationObject)
CreateArticleAsHeterogeneous	Gets or sets a value that indicates whether to create an article as heterogeneous. (Inherited from Article)
CreationScript	Gets or sets the name and full path of the Transact-SQL script file that is used to create the destination object at the Subscriber. (Inherited from Article)
DatabaseName	Gets or sets the name of the database that contains the data and the objects that are published in the article. (Inherited from Article)
DeleteTracking	Gets or sets whether deletes are replicated.
Description	Gets or sets a textual description of the article. (Inherited from Article)
DestinationObjectName	Gets or sets the database object that is the source database object for the article at the Subscriber. (Inherited from Article)
DestinationObjectOwner	Gets or sets the schema owner of the source database object for the article at the Subscriber. (Inherited from Article)
FilterClause	Gets or sets the WHERE (Transact-SQL) clause that is evaluated to filter an article horizontally.
IdentityRangeManagementOption	Gets or sets the identity range management options for the article. (Inherited from Article)
IdentityRangeThreshold	Gets or sets the value at which a new range of identity column values are assigned to a Publisher or to a Subscriber. (Inherited from Article)
IsExistingObject	Gets whether the object exists on the server or not. (Inherited from ReplicationObject)
MultipleColumnUpdate	Gets or sets a value that indicates whether to update multiple columns.
Name	Gets or sets the name of the article. (Inherited from Article)
PartitionOption	Gets or sets the filtering options when an article is filtered using a parameterized row filter.
PreCreationMethod	Gets or sets the action to take when the published object already exists in the subscription database. (Inherited from Article)
ProcessingOrder	Gets or sets the processing order of the article during synchronization.
PublicationName	Gets or sets the name of the publication to which the article belongs. (Inherited from Article)
PublisherIdentityRangeSize	Gets or sets the range of identity values assigned to table columns at the Publisher. (Inherited from Article)
ResolverInfo	Gets or sets additional data and parameters that are to be used by a COM-based conflict resolver.
SchemaOption	Gets or sets the schema creation options for an article. (Inherited from Article)
SnapshotObjectName	Gets the name of the database object that represents the initial snapshot data for the article.
SnapshotObjectOwner	Gets the owner of the database object that represents the initial snapshot data for the article.
SourceObjectName	Gets or sets the name of the database object that is being published. (Inherited from Article)
SourceObjectOwner	Gets or sets the owner of the database object that is being published. (Inherited from Article)
SqlServerName	Gets the name of the Microsoft SQL Server instance to which this object is connected. (Inherited from ReplicationObject)
Status	Gets or sets the status of the merge article.
StreamBlobColumns	Gets or sets whether a data stream optimization is used when replicating binary large object (BLOB) columns.
SubscriberIdentityRangeSize	Gets or sets the maximum number of new rows that can be inserted into an identity column in a table at a Subscriber before another identity range must be allocated. (Inherited from Article)
SubscriberUploadOption	Gets or sets the behavior of updates made at a Subscriber with a client subscription.
Type	Gets or sets the type of article. (Inherited from Article)
UserData	Gets or sets an object property that allows users to attach their own data to the object. (Inherited from ReplicationObject)
VerifyResolverSignature	Gets or sets the options for verifying the digital signature on a COM-based conflict resolver to determine if it is from a trusted source.
VerticalPartition	Gets a value that indicates whether all columns are published in a table article. (Inherited from Article)

Methods

AddMergeJoinFilter(MergeJoinFilter)	Adds a join filter to the merge article.
AddReplicatedColumns(Array)	Adds the specified columns to the merge article.
ChangeMergeJoinFilter(MergeJoinFilter, MergeJoinFilter)	Changes a join filter that defined on a merge article.
CheckValidCreation()	Checks the valid article creation. (Inherited from Article)
CheckValidDefinition(Boolean)	Indicates whether the definition is valid. (Inherited from Article)
CommitPropertyChanges()	Sends all the cached property change statements to the instance of Microsoft SQL Server. (Inherited from ReplicationObject)
Create()	Creates a new article on the currently connected instance of SQL Server based on the current properties of the TransArticle object or the MergeArticle object. (Inherited from Article)
Decouple()	Decouples the referenced replication object from the server. (Inherited from ReplicationObject)
EnumMergeJoinFilters()	Returns the join filters that are defined for the merge article.
GetChangeCommand(StringBuilder, String, String)	Returns the change command from the replication. (Inherited from ReplicationObject)
GetCreateCommand(StringBuilder, Boolean, ScriptOptions)	Returns the create command from the replication. (Inherited from ReplicationObject)
GetDropCommand(StringBuilder, Boolean)	Returns the drop command from the replication. (Inherited from ReplicationObject)
InitializeSharedPropertiesBasedOnExistingArticles()	Indicates whether to initialize shared properties based on existing articles.
InternalRefresh(Boolean)	Initiates an internal refresh from the replication. (Inherited from ReplicationObject)
ListReplicatedColumns()	Returns the columns that exist in a vertically partitioned article.
Load()	Loads the properties of an existing object from the server. (Inherited from ReplicationObject)
LoadProperties()	Loads the properties of an existing object from the server. (Inherited from ReplicationObject)
Refresh()	Reloads the properties of the object. (Inherited from ReplicationObject)
Remove()	Removes an existing article on the currently connected instance of SQL Server based on the current properties of the TransArticle object or the MergeArticle object. (Inherited from Article)
RemoveMergeJoinFilter(String)	Removes the specified merge join filter from the article.
RemoveReplicatedColumns(Array)	Removes existing columns from a vertically partitioned article.
Script(ScriptOptions)	Generates a Transact-SQL script that can be executed to create or delete the TransArticle object or the MergeArticle object on the server. (Inherited from Article)
ScriptMergeJoinFilter(MergeJoinFilter, ScriptOptions)	Returns a Transact-SQL script of the merge join filter attached to the merge article.

See also

• How to: Define an Article (RMO Programming)