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Public Class ScriptMain
Inherits UserComponent
Private Const ColumnSeparator As String = "," + vbLf
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Public Overrides Sub Input_ProcessInputRow(ByVal Row As InputBuffer)
' Setup parameters value.
Dim paramsCount As Integer = m_inputIndexes.Length
For paramIndex As Integer = 0 To paramsCount - 1
Dim colValue As Object = DBNull.Value
Dim inputIndex As Integer = m_inputIndexes(paramIndex)
If Not Row.Buffer.IsNull(inputIndex) Then
colValue = Row.Buffer(inputIndex)
End If
m_command.Parameters(paramIndex).Value = colValue
Next
Select Case Me.ErrorRowDisposition
Case DTSRowDisposition.RD_IgnoreFailure
Try
Call m_command.ExecuteNonQuery()
Catch ex As Exception
End Try
Call Row.DirectRowToOutput()
Case DTSRowDisposition.RD_RedirectRow
Try
Call m_command.ExecuteNonQuery()
Call Row.DirectRowToOutput()
Catch ex As Exception
Row.ErrorDescription = ex.Message
Call Row.DirectRowToErrorOutput()
End Try
Case DTSRowDisposition.RD_FailComponent, DTSRowDisposition.RD_NotUsed
Call m_command.ExecuteNonQuery()
Call Row.DirectRowToOutput()
End Select
End Sub ' Input_ProcessInputRow
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Public Overrides Sub PreExecute()
Call MyBase.PreExecute()
' Initialize ADO.NET command.
Dim connection As DbConnection = CType( _
MyBase.Connections.AdoNet.AcquireConnection(Nothing), _
DbConnection)
m_command = connection.CreateCommand()
m_command.CommandText = Me.Statement
m_command.CommandTimeout = Me.Timeout
Dim input As IDTSInput100 = Me.ComponentMetaData.InputCollection(0)
' Get parameters.
Dim params() As String = GetParameters_()
' Setup parameters.
Dim paramsCount As Integer = params.Length
For paramIndex As Integer = 0 To paramsCount - 1
Dim parameter As DbParameter = m_command.CreateParameter()
parameter.ParameterName = params(paramIndex)
Call SetupParameter_(input.InputColumnCollection(paramIndex), parameter)
Call m_command.Parameters.Add(parameter)
Next
' Setup dynamic input columns indexes.
m_inputIndexes = New Integer(paramsCount - 1) {}
For colIndex As Integer = 0 To paramsCount - 1
m_inputIndexes(colIndex) = Me.HostComponent.BufferManager.FindColumnByLineageID( _
input.Buffer, _
input.InputColumnCollection(colIndex).LineageID)
Next
End Sub ' PreExecute
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Public Overrides Sub PostExecute()
Call MyBase.PostExecute()
If Not m_command Is Nothing Then
Call m_command.Dispose()
m_command = Nothing
End If
End Sub ' PostExecute
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Public Function Validate(ByRef errMessage As String) As Boolean
Dim result As Boolean
Try
If String.IsNullOrEmpty(Me.Connection) Then
Throw New ApplicationException("Select ADO.NET connection.")
End If
If String.IsNullOrEmpty(Me.Statement) Then
Throw New ApplicationException("Specify SQL statement.")
End If
If String.IsNullOrEmpty(Me.ParseExpression) Then
Throw New ApplicationException("Specify regular expression for parameters parse.")
End If
Dim params() As String = GetParameters_()
Dim selectedCols() As String = {}
If Not String.IsNullOrEmpty(Me.InputColumns) Then
selectedCols = Me.InputColumns.Split( _
New String() {ColumnSeparator}, _
StringSplitOptions.None)
End If
If params.Length > selectedCols.Length Then
' Selected input columns are not enough.
Throw New ApplicationException("Select input columns for these parameters: " & String.Join(", ", params))
End If
' Store connection information in the runtime connection collection, too.
' Cannot directly use RuntimeConnectionCollection in the property get/set
' because of issues with multi-threading.
Me.ComponentMetaData.RuntimeConnectionCollection("AdoNet").ConnectionManagerID = Me.Connection
' Setup input columns based on selection.
Dim input As IDTSInput100 = Me.ComponentMetaData.InputCollection(0)
Dim virtInput As IDTSVirtualInput100 = input.GetVirtualInput()
Call input.InputColumnCollection.RemoveAll()
For Each col As String In selectedCols
If Not String.IsNullOrEmpty(col) Then
Dim virtColumn As IDTSVirtualInputColumn100 = virtInput.VirtualInputColumnCollection(col)
Call virtInput.SetUsageType(virtColumn.LineageID, DTSUsageType.UT_READONLY)
End If
Next
result = True
Catch ex As Exception
result = False
errMessage = ex.Message
End Try
Validate = result
End Function 'Validate
#Region "Properties"
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Public Property Connection() As String
Get
Connection = m_connection
End Get
Set(ByVal value As String)
m_connection = value
End Set
End Property ' Connection
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Public Property Statement() As String
Get
Statement = m_statement
End Get
Set(ByVal value As String)
m_statement = value
End Set
End Property ' Statement
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Public Property Timeout() As Integer
Get
Timeout = m_timeout
End Get
Set(ByVal value As Integer)
m_timeout = value
End Set
End Property ' Timeout
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Public Property ErrorRowDisposition() As DTSRowDisposition
Get
ErrorRowDisposition = m_errorRowDisposition
End Get
Set(ByVal value As DTSRowDisposition)
m_errorRowDisposition = value
End Set
End Property ' ErrorRowDisposition
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Public Property ParseExpression() As String
Get
ParseExpression = m_parseExpression
End Get
Set(ByVal value As String)
m_parseExpression = value
End Set
End Property ' ParseExpression
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Public Property InputColumns() As String
Get
InputColumns = m_inputColumns
End Get
Set(ByVal value As String)
m_inputColumns = value
End Set
End Property ' InputColumns
#End Region ' Properties
#Region "Internals"
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Private ReadOnly Property AdoNetConnectionType() As String()
Get
AdoNetConnectionType = New String() {"ADO.NET"}
End Get
End Property ' AdoNetConnectionType
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' Parse specified statement with specified regular expression to retrieve parameters.
Private Function GetParameters_() As String()
Dim result As New ArrayList
Dim mc As MatchCollection = Regex.Matches( _
Me.Statement, _
Me.ParseExpression, _
RegexOptions.IgnoreCase Or RegexOptions.Multiline)
Dim foundDuplicates As Boolean = False
Dim paramsCount As Integer = mc.Count
For paramIndex As Integer = 0 To paramsCount - 1
Dim parameter As String = mc(paramIndex).Groups(1).Value
If result.Contains(parameter) Then
' Found duplicate parameter. Stop processing.
foundDuplicates = True
Call result.Clear()
Exit For
End If
Call result.Add(parameter)
Next
If foundDuplicates Then
' Setup uniquely named parameters.
For paramIndex As Integer = 0 To paramsCount - 1
Call result.Add("Param" & CStr(paramIndex + 1))
Next
End If
GetParameters_ = CType(result.ToArray(GetType(String)), String())
End Function ' GetParameters_
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' Setup parameter data type.
Private Sub SetupParameter_( _
ByVal inputCol As IDTSInputColumn100, _
ByVal parameter As DbParameter)
parameter.DbType = GetDbType_(inputCol.DataType)
parameter.Size = inputCol.Length
' Get precision.
Dim precision As Byte = CByte(inputCol.Precision)
If inputCol.DataType = DataType.DT_DECIMAL AndAlso precision = 0 Then
' Decimal type has precision 29.
' http://msdn.microsoft.com/en-us/library/ms141036.aspx
precision = 29
End If
' Setup precision and scale.
Dim iDbDataParameter As IDbDataParameter = parameter
iDbDataParameter.Precision = precision
iDbDataParameter.Scale = CByte(inputCol.Scale)
End Sub ' SetupParameter_
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' Return ADO.NET data type from SSIS data type.
Private Function GetDbType_(ByVal dt As DataType) As DbType
Select Case dt
Case DataType.DT_BOOL
Return DbType.Boolean
Case DataType.DT_STR, DataType.DT_WSTR
Return DbType.String
Case DataType.DT_I1
Return DbType.SByte
Case DataType.DT_UI1
Return DbType.Byte
Case DataType.DT_I2
Return DbType.Int16
Case DataType.DT_UI2
Return DbType.UInt16
Case DataType.DT_I4
Return DbType.Int32
Case DataType.DT_UI4
Return DbType.UInt32
Case DataType.DT_I8
Return DbType.Int64
Case DataType.DT_UI8
Return DbType.UInt64
Case DataType.DT_R4
Return DbType.Single
Case DataType.DT_R8
Return DbType.Double
Case DataType.DT_NUMERIC, DataType.DT_DECIMAL
Return DbType.Decimal
Case DataType.DT_CY
Return DbType.Currency
Case DataType.DT_DBTIMESTAMP
Return DbType.DateTime
Case DataType.DT_DBDATE
Return DbType.Date
Case DataType.DT_DBTIME
Return DbType.Time
End Select
Throw New ArgumentException("Unhandled type.")
End Function ' GetDbType_
#End Region ' Internals
#Region "Attributes"
Private m_connection As String
Private m_statement As String
Private m_timeout As Integer
Private m_errorRowDisposition As DTSRowDisposition
Private m_parseExpression As String
Private m_inputColumns As String
Private m_command As DbCommand
Private m_inputIndexes() As Integer
#End Region ' Attributes
End Class ' ScriptMain
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Public Class InputBuffer
Inherits ScriptBufferPlus
Public Sub New(ByVal Component As ScriptComponent, ByVal ObjectID As Integer, ByVal IsInput As Boolean, ByVal Buffer As PipelineBuffer, ByVal OutputMap As OutputNameMap)
MyBase.New(Component, ObjectID, IsInput, Buffer, OutputMap)
End Sub
Public Overrides ReadOnly Property StaticInputColumns() As String()
Get
Return New String() {}
End Get
End Property
Public Sub DirectRowToOutput()
MyBase.DirectRow("Output")
End Sub
Public WriteOnly Property [ErrorDescription]() As String
Set
Me(0) = Value
End Set
End Property
Public WriteOnly Property [ErrorDescription_IsNull] As Boolean
Set
If (value)
SetNull(0)
Else
Throw new InvalidOperationException("IsNull property cannot be set to False. Assign a value to the column instead.")
End If
End Set
End Property
Public Sub DirectRowToErrorOutput()
MyBase.DirectRow("Error Output")
End Sub
Public Overrides ReadOnly Property StaticOutputColumns() As String()
Get
Return New String() {"ErrorDescription"}
End Get
End Property
Public Overloads Function NextRow() As Boolean
NextRow = MyBase.NextRow()
End Function
Public Overloads Function EndOfRowset() As Boolean
EndOfRowset = MyBase.EndOfRowset
End Function
End Class
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Public Class UserComponent
Inherits ScriptComponentPlus
Public Connections As New Connections(Me)
Public Variables As New Variables(Me)
Public Overrides Sub ProcessInput(ByVal InputID As Integer, ByVal InputName As String, ByVal Buffer As PipelineBuffer, ByVal OutputMap As OutputNameMap)
If InputID = MyBase.ComponentMetaData.InputCollection("Input").ID Then
Input_ProcessInput(New InputBuffer(Me, InputID, True, Buffer, OutputMap))
End If
End Sub
Public Overridable Sub Input_ProcessInput(ByVal Buffer As InputBuffer)
While Buffer.NextRow()
Input_ProcessInputRow(Buffer)
End While
End Sub
Public Overridable Sub Input_ProcessInputRow(ByVal Row As InputBuffer)
End Sub
End Class
Public Class Connections
Dim ParentComponent As ScriptComponent
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Public Sub New(ByVal Component As ScriptComponent)
ParentComponent = Component
End Sub
Public ReadOnly Property AdoNet() As IDTSConnectionManager100
Get
Return ParentComponent.ComponentMetaData.RuntimeConnectionCollection("AdoNet").ConnectionManager
End Get
End Property
End Class
Public Class Variables
Dim ParentComponent As ScriptComponent
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Public Sub New(ByVal Component As ScriptComponent)
ParentComponent = Component
End Sub
End Class
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