Метод InsertHandler
Optional method that implements the custom business logic invoked when INSERT statements are being uploaded or downloaded.
Пространство имен: Microsoft.SqlServer.Replication.BusinessLogicSupport
Сборка: Microsoft.SqlServer.Replication.BusinessLogicSupport (в Microsoft.SqlServer.Replication.BusinessLogicSupport.dll)
Синтаксис
'Декларация
Public Overridable Function InsertHandler ( _
insertSource As SourceIdentifier, _
insertedDataSet As DataSet, _
ByRef customDataSet As DataSet, _
ByRef historyLogLevel As Integer, _
ByRef historyLogMessage As String _
) As ActionOnDataChange
'Применение
Dim instance As BusinessLogicModule
Dim insertSource As SourceIdentifier
Dim insertedDataSet As DataSet
Dim customDataSet As DataSet
Dim historyLogLevel As Integer
Dim historyLogMessage As String
Dim returnValue As ActionOnDataChange
returnValue = instance.InsertHandler(insertSource, _
insertedDataSet, customDataSet, _
historyLogLevel, historyLogMessage)
public virtual ActionOnDataChange InsertHandler(
SourceIdentifier insertSource,
DataSet insertedDataSet,
ref DataSet customDataSet,
ref int historyLogLevel,
ref string historyLogMessage
)
public:
virtual ActionOnDataChange InsertHandler(
SourceIdentifier insertSource,
DataSet^ insertedDataSet,
DataSet^% customDataSet,
int% historyLogLevel,
String^% historyLogMessage
)
abstract InsertHandler :
insertSource:SourceIdentifier *
insertedDataSet:DataSet *
customDataSet:DataSet byref *
historyLogLevel:int byref *
historyLogMessage:string byref -> ActionOnDataChange
override InsertHandler :
insertSource:SourceIdentifier *
insertedDataSet:DataSet *
customDataSet:DataSet byref *
historyLogLevel:int byref *
historyLogMessage:string byref -> ActionOnDataChange
public function InsertHandler(
insertSource : SourceIdentifier,
insertedDataSet : DataSet,
customDataSet : DataSet,
historyLogLevel : int,
historyLogMessage : String
) : ActionOnDataChange
Параметры
- insertSource
Тип: Microsoft.SqlServer.Replication.BusinessLogicSupport. . :: . .SourceIdentifier
SourceIdentifier that defines whether the insert was initiated at the Publisher or the Subscriber.
- insertedDataSet
Тип: System.Data. . :: . .DataSet
Dataset that contains the GUID of the row that was inserted.
- customDataSet
Тип: System.Data. . :: . .DataSet%
Dataset that contains the modified row returned by the custom business logic.
- historyLogLevel
Тип: System. . :: . .Int32%
Log level of the custom message returned by the custom business logic.
- historyLogMessage
Тип: System. . :: . .String%
Log message provided by the custom business logic. The log message gets written to the distribution database.
Возвращаемое значение
Тип: Microsoft.SqlServer.Replication.BusinessLogicSupport. . :: . .ActionOnDataChange
The ActionOnDataChange action that will be taken by the process after the custom business logic has executed.
Примеры
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