BusinessLogicModule.Initialize Method
Sends information about the article being synchronized to the business logic resolver when the Merge Agent is started.
Namespace: Microsoft.SqlServer.Replication.BusinessLogicSupport
Assembly: Microsoft.SqlServer.Replication.BusinessLogicSupport (in Microsoft.SqlServer.Replication.BusinessLogicSupport.dll)
Syntax
'Declaration
Public Overridable Sub Initialize ( _
publisher As String, _
subscriber As String, _
distributor As String, _
publisherDB As String, _
subscriberDB As String, _
articleName As String _
)
'Usage
Dim instance As BusinessLogicModule
Dim publisher As String
Dim subscriber As String
Dim distributor As String
Dim publisherDB As String
Dim subscriberDB As String
Dim articleName As String
instance.Initialize(publisher, subscriber, _
distributor, publisherDB, subscriberDB, _
articleName)
public virtual void Initialize(
string publisher,
string subscriber,
string distributor,
string publisherDB,
string subscriberDB,
string articleName
)
public:
virtual void Initialize(
String^ publisher,
String^ subscriber,
String^ distributor,
String^ publisherDB,
String^ subscriberDB,
String^ articleName
)
abstract Initialize :
publisher:string *
subscriber:string *
distributor:string *
publisherDB:string *
subscriberDB:string *
articleName:string -> unit
override Initialize :
publisher:string *
subscriber:string *
distributor:string *
publisherDB:string *
subscriberDB:string *
articleName:string -> unit
public function Initialize(
publisher : String,
subscriber : String,
distributor : String,
publisherDB : String,
subscriberDB : String,
articleName : String
)
Parameters
- publisher
Type: System.String
Name of the Publisher.
- subscriber
Type: System.String
Name of the Subscriber.
- distributor
Type: System.String
Name of the Distributor.
- publisherDB
Type: System.String
Name of the publication database.
- subscriberDB
Type: System.String
Name of the subscription database.
- articleName
Type: System.String
Name of the published article.
Remarks
The merge agent will cache this information and use it throughout the lifetime of the synchronization process.
Examples
using System;
using System.Text;
using System.Data;
using System.Data.Common;
using Microsoft.SqlServer.Replication.BusinessLogicSupport;
using Microsoft.Samples.SqlServer.BusinessLogicHandler;
namespace Microsoft.Samples.SqlServer.BusinessLogicHandler
{
public class OrderEntryBusinessLogicHandler :
Microsoft.SqlServer.Replication.BusinessLogicSupport.BusinessLogicModule
{
// Variables to hold server names.
private string publisherName;
private string subscriberName;
public OrderEntryBusinessLogicHandler()
{
}
// Implement the Initialize method to get publication
// and subscription information.
public override void Initialize(
string publisher,
string subscriber,
string distributor,
string publisherDB,
string subscriberDB,
string articleName)
{
// Set the Publisher and Subscriber names.
publisherName = publisher;
subscriberName = subscriber;
}
// Declare what types of row changes, conflicts, or errors to handle.
override public ChangeStates HandledChangeStates
{
get
{
// Handle Subscriber inserts, updates and deletes.
return ChangeStates.SubscriberInserts |
ChangeStates.SubscriberUpdates | ChangeStates.SubscriberDeletes;
}
}
public override ActionOnDataChange InsertHandler(SourceIdentifier insertSource,
DataSet insertedDataSet, ref DataSet customDataSet, ref int historyLogLevel,
ref string historyLogMessage)
{
if (insertSource == SourceIdentifier.SourceIsSubscriber)
{
// Build a line item in the audit message to log the Subscriber insert.
StringBuilder AuditMessage = new StringBuilder();
AuditMessage.Append(String.Format("A new order was entered at {0}. " +
"The SalesOrderID for the order is :", subscriberName));
AuditMessage.Append(insertedDataSet.Tables[0].Rows[0]["SalesOrderID"].ToString());
AuditMessage.Append("The order must be shipped by :");
AuditMessage.Append(insertedDataSet.Tables[0].Rows[0]["DueDate"].ToString());
// Set the reference parameter to write the line to the log file.
historyLogMessage = AuditMessage.ToString();
// Set the history log level to the default verbose level.
historyLogLevel = 1;
// Accept the inserted data in the Subscriber's data set and
// apply it to the Publisher.
return ActionOnDataChange.AcceptData;
}
else
{
return base.InsertHandler(insertSource, insertedDataSet, ref customDataSet,
ref historyLogLevel, ref historyLogMessage);
}
}
public override ActionOnDataChange UpdateHandler(SourceIdentifier updateSource,
DataSet updatedDataSet, ref DataSet customDataSet, ref int historyLogLevel,
ref string historyLogMessage)
{
if (updateSource == SourceIdentifier.SourceIsPublisher)
{
// Build a line item in the audit message to log the Subscriber update.
StringBuilder AuditMessage = new StringBuilder();
AuditMessage.Append(String.Format("An existing order was updated at {0}. " +
"The SalesOrderID for the order is ", subscriberName));
AuditMessage.Append(updatedDataSet.Tables[0].Rows[0]["SalesOrderID"].ToString());
AuditMessage.Append("The order must now be shipped by :");
AuditMessage.Append(updatedDataSet.Tables[0].Rows[0]["DueDate"].ToString());
// Set the reference parameter to write the line to the log file.
historyLogMessage = AuditMessage.ToString();
// Set the history log level to the default verbose level.
historyLogLevel = 1;
// Accept the updated data in the Subscriber's data set and apply it to the Publisher.
return ActionOnDataChange.AcceptData;
}
else
{
return base.UpdateHandler(updateSource, updatedDataSet,
ref customDataSet, ref historyLogLevel, ref historyLogMessage);
}
}
public override ActionOnDataDelete DeleteHandler(SourceIdentifier deleteSource,
DataSet deletedDataSet, ref int historyLogLevel, ref string historyLogMessage)
{
if (deleteSource == SourceIdentifier.SourceIsSubscriber)
{
// Build a line item in the audit message to log the Subscriber deletes.
// Note that the rowguid is the only information that is
// available in the dataset.
StringBuilder AuditMessage = new StringBuilder();
AuditMessage.Append(String.Format("An existing order was deleted at {0}. " +
"The rowguid for the order is ", subscriberName));
AuditMessage.Append(deletedDataSet.Tables[0].Rows[0]["rowguid"].ToString());
// Set the reference parameter to write the line to the log file.
historyLogMessage = AuditMessage.ToString();
// Set the history log level to the default verbose level.
historyLogLevel = 1;
// Accept the delete and apply it to the Publisher.
return ActionOnDataDelete.AcceptDelete;
}
else
{
return base.DeleteHandler(deleteSource, deletedDataSet,
ref historyLogLevel, ref historyLogMessage);
}
}
}
}
Imports System
Imports System.Text
Imports System.Data
Imports System.Data.Common
Imports Microsoft.SqlServer.Replication.BusinessLogicSupport
Namespace Microsoft.Samples.SqlServer.BusinessLogicHandler
Public Class OrderEntryBusinessLogicHandler
Inherits BusinessLogicModule
' Variables to hold server names.
Private publisherName As String
Private subscriberName As String
' Implement the Initialize method to get publication
' and subscription information.
Public Overrides Sub Initialize( _
ByVal publisher As String, _
ByVal subscriber As String, _
ByVal distributor As String, _
ByVal publisherDB As String, _
ByVal subscriberDB As String, _
ByVal articleName As String _
)
' Set the Publisher and Subscriber names.
publisherName = publisher
subscriberName = subscriber
End Sub
' Declare what types of row changes, conflicts, or errors to handle.
Public Overrides ReadOnly Property HandledChangeStates() As ChangeStates
Get
' Handle Subscriber inserts, updates and deletes.
Return (ChangeStates.SubscriberInserts Or _
ChangeStates.SubscriberUpdates Or ChangeStates.SubscriberDeletes)
End Get
End Property
Public Overrides Function InsertHandler(ByVal insertSource As SourceIdentifier, _
ByVal insertedDataSet As DataSet, ByRef customDataSet As DataSet, _
ByRef historyLogLevel As Integer, ByRef historyLogMessage As String) _
As ActionOnDataChange
If insertSource = SourceIdentifier.SourceIsSubscriber Then
' Build a line item in the audit message to log the Subscriber insert.
Dim AuditMessage As StringBuilder = New StringBuilder()
AuditMessage.Append(String.Format("A new order was entered at {0}. " + _
"The SalesOrderID for the order is :", subscriberName))
AuditMessage.Append(insertedDataSet.Tables(0).Rows(0)("SalesOrderID").ToString())
AuditMessage.Append("The order must be shipped by :")
AuditMessage.Append(insertedDataSet.Tables(0).Rows(0)("DueDate").ToString())
' Set the reference parameter to write the line to the log file.
historyLogMessage = AuditMessage.ToString()
' Set the history log level to the default verbose level.
historyLogLevel = 1
' Accept the inserted data in the Subscriber's data set and
' apply it to the Publisher.
Return ActionOnDataChange.AcceptData
Else
Return MyBase.InsertHandler(insertSource, insertedDataSet, customDataSet, _
historyLogLevel, historyLogMessage)
End If
End Function
Public Overrides Function UpdateHandler(ByVal updateSource As SourceIdentifier, _
ByVal updatedDataSet As DataSet, ByRef customDataSet As DataSet, _
ByRef historyLogLevel As Integer, ByRef historyLogMessage As String) _
As ActionOnDataChange
If updateSource = SourceIdentifier.SourceIsPublisher Then
' Build a line item in the audit message to log the Subscriber update.
Dim AuditMessage As StringBuilder = New StringBuilder()
AuditMessage.Append(String.Format("An existing order was updated at {0}. " + _
"The SalesOrderID for the order is ", subscriberName))
AuditMessage.Append(updatedDataSet.Tables(0).Rows(0)("SalesOrderID").ToString())
AuditMessage.Append("The order must now be shipped by :")
AuditMessage.Append(updatedDataSet.Tables(0).Rows(0)("DueDate").ToString())
' Set the reference parameter to write the line to the log file.
historyLogMessage = AuditMessage.ToString()
' Set the history log level to the default verbose level.
historyLogLevel = 1
' Accept the updated data in the Subscriber's data set and apply it to the Publisher.
Return ActionOnDataChange.AcceptData
Else
Return MyBase.UpdateHandler(updateSource, updatedDataSet, _
customDataSet, historyLogLevel, historyLogMessage)
End If
End Function
Public Overrides Function DeleteHandler(ByVal deleteSource As SourceIdentifier, _
ByVal deletedDataSet As DataSet, ByRef historyLogLevel As Integer, _
ByRef historyLogMessage As String) As ActionOnDataDelete
If deleteSource = SourceIdentifier.SourceIsSubscriber Then
' Build a line item in the audit message to log the Subscriber deletes.
' Note that the rowguid is the only information that is
' available in the dataset.
Dim AuditMessage As StringBuilder = New StringBuilder()
AuditMessage.Append(String.Format("An existing order was deleted at {0}. " + _
"The rowguid for the order is ", subscriberName))
AuditMessage.Append(deletedDataSet.Tables(0).Rows(0)("rowguid").ToString())
' Set the reference parameter to write the line to the log file.
historyLogMessage = AuditMessage.ToString()
' Set the history log level to the default verbose level.
historyLogLevel = 1
' Accept the delete and apply it to the Publisher.
Return ActionOnDataDelete.AcceptDelete
Else
Return MyBase.DeleteHandler(deleteSource, deletedDataSet, _
historyLogLevel, historyLogMessage)
End If
End Function
End Class
End Namespace