_
Public Class UserComponent
Inherits ScriptComponentPlus
Public Connections As New Connections(Me)
Public Variables As New Variables(Me)
Public OutputBuffer As OutputBuffer
Dim InputsFinished As Integer = 0
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
If Buffer.EndOfRowset Then
InputsFinished = InputsFinished + 1
If InputsFinished = 1 Then
FinishOutputs()
MarkOutputsFinished()
End If
End If
End Sub
Public Overridable Sub FinishOutputs()
End Sub
Private Sub MarkOutputsFinished()
If OutputBuffer IsNot Nothing Then
OutputBuffer.SetEndOfRowset
OutputBuffer = Nothing
End If
End Sub
Public Overrides Sub PrimeOutput(ByVal Outputs As Integer, ByVal OutputIDs() As Integer, ByVal Buffers() As PipelineBuffer, ByVal OutputMap As OutputNameMap)
For I As Integer = 0 To Outputs - 1
If OutputIDs(I) = GetOutputID(OutputMap, "Output") Then
OutputBuffer = New OutputBuffer(Me, OutputIDs(I), False, Buffers(I), OutputMap)
End If
Next
CreateNewOutputRows()
End Sub
Public Overridable Sub CreateNewOutputRows()
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
_
Public Sub New(ByVal Component As ScriptComponent)
ParentComponent = Component
End Sub
End Class
Public Class Variables
Dim ParentComponent As ScriptComponent
_
Public Sub New(ByVal Component As ScriptComponent)
ParentComponent = Component
End Sub
End Class
]]> _
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 Overrides ReadOnly Property StaticOutputColumns() As String()
Get
Return New String() {}
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
_
Public Class OutputBuffer
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 Overrides ReadOnly Property StaticOutputColumns() As String()
Get
Return New String() {}
End Get
End Property
Public Overloads Sub AddRow()
MyBase.AddRow()
End Sub
Public Overloads Sub SetEndOfRowset()
MyBase.SetEndOfRowset()
End Sub
Public Overloads Function EndOfRowset() As Boolean
EndOfRowset = MyBase.EndOfRowset
End Function
End Class
]]> _
_
_
_
Public Class ScriptMain
Inherits UserComponent
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Overrides Sub Input_ProcessInputRow(ByVal Row As InputBuffer)
Dim matches As MatchCollection = m_regex.Matches(Row.Buffer(m_inputColumn).ToString())
For Each match As Match In matches
Call Me.OutputBuffer.AddRow()
' Extract group values.
For Each pair As DictionaryEntry In m_outColsIdx
Dim group As Group = match.Groups(CStr(pair.Key))
If group.Success Then
Me.OutputBuffer.Buffer(CInt(pair.Value)) = group.Value
End If
Next
Next
End Sub ' Input_ProcessInputRow
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Overrides Sub PreExecute()
Call MyBase.PreExecute()
' Setup regular expression.
m_regex = New Regex( _
Me.Pattern, _
RegexOptions.Compiled Or RegexOptions.IgnoreCase Or _
RegexOptions.Singleline Or RegexOptions.CultureInvariant)
' Setup input column.
Dim input As IDTSInput100 = Me.ComponentMetaData.InputCollection(0)
m_inputColumn = Me.HostComponent.BufferManager.FindColumnByLineageID( _
input.Buffer, _
input.InputColumnCollection(Me.Column).LineageID)
' Setup output columns.
m_outColsIdx = New Hashtable()
Dim output As IDTSOutput100 = Me.ComponentMetaData.OutputCollection(0)
Dim colsCount As Integer = output.OutputColumnCollection.Count
For colIndex As Integer = 0 To colsCount - 1
Dim column As IDTSOutputColumn100 = output.OutputColumnCollection(colIndex)
' Setup buffer index.
Call m_outColsIdx.Add( _
column.Name, _
Me.HostComponent.BufferManager.FindColumnByLineageID( _
output.Buffer, _
column.LineageID))
Next
End Sub ' PreExecute
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Function Validate(ByRef errMessage As String) As Boolean
Dim result As Boolean = True
Try
If String.IsNullOrEmpty(Me.Column) Then
Throw New ApplicationException("Select input column.")
End If
If String.IsNullOrEmpty(Me.Pattern) Then
Throw New ApplicationException("Specify regular expression.")
End If
' Setup input columns based on selection.
Dim input As IDTSInput100 = Me.ComponentMetaData.InputCollection(0)
Call input.InputColumnCollection.RemoveAll()
Dim virtInput As IDTSVirtualInput100 = input.GetVirtualInput()
Dim virtColumn As IDTSVirtualInputColumn100 = virtInput.VirtualInputColumnCollection(Me.Column)
Call virtInput.SetUsageType(virtColumn.LineageID, DTSUsageType.UT_READONLY)
Dim output As IDTSOutput100 = MyBase.ComponentMetaData.OutputCollection(0)
If output.OutputColumnCollection.Count = 0 Then
' Setup collection output columns.
Call SetupOutputColumns_()
End If
Catch ex As Exception
result = False
errMessage = ex.Message
End Try
Validate = result
End Function 'Validate
#Region "Properties"
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
_
_
Public Property Column() As String
Get
Column = m_column
End Get
Set(ByVal value As String)
m_column = value
End Set
End Property ' Column
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
_
_
Public Property Pattern() As String
Get
Pattern = m_pattern
End Get
Set(ByVal value As String)
If m_pattern <> value Then
If Not String.IsNullOrEmpty(m_pattern) Then
' Force output columns to be setup.
Dim output As IDTSOutput100 = Me.ComponentMetaData.OutputCollection(0)
Call output.OutputColumnCollection.RemoveAll()
End If
m_pattern = value
End If
End Set
End Property ' Pattern
#End Region ' Properties
#Region "Internals"
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Sub SetupOutputColumns_()
' Get group names.
Dim regex As Regex = New Regex(Me.Pattern)
Dim groups() As String = regex.GetGroupNames()
Dim output As IDTSOutput100 = Me.ComponentMetaData.OutputCollection(0)
Call output.OutputColumnCollection.RemoveAll()
Dim groupsCount As Integer = groups.Length
For groupIndex As Integer = 1 To groupsCount - 1 ' First group refers to the whole input.
Dim column As IDTSOutputColumn100 = output.OutputColumnCollection.[New]()
column.Name = groups(groupIndex)
Call column.SetDataTypeProperties(DataType.DT_WSTR, 250, 0, 0, 0)
Next
End Sub ' SetupOutputColumns_
#End Region ' Internals
#Region "Attributes"
Private m_column As String
Private m_pattern As String
Private m_regex As Regex
Private m_inputColumn As Integer
Private m_outColsIdx As Hashtable
#End Region ' Attributes
End Class ' ScriptMain
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