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Public Class ScriptMain
Inherits UserComponent
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Public Overrides Sub Input_ProcessInputRow(ByVal Row As InputBuffer)
Row.Buffer(m_distanceIndex) = GetLevenshteinDistance_( _
Row.Buffer(m_firstIndex).ToString(), _
Row.Buffer(m_secondIndex).ToString())
End Sub ' Input_ProcessInputRow
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Public Overrides Sub PreExecute()
Call MyBase.PreExecute()
Dim input As IDTSInput100 = Me.ComponentMetaData.InputCollection(0)
Dim output As IDTSOutput100 = Me.ComponentMetaData.OutputCollection(0)
' Find first column index.
m_firstIndex = Me.HostComponent.BufferManager.FindColumnByLineageID( _
input.Buffer, _
input.InputColumnCollection(Me.FirstColumn).LineageID)
' Find second column index.
m_secondIndex = Me.HostComponent.BufferManager.FindColumnByLineageID( _
input.Buffer, _
input.InputColumnCollection(Me.SecondColumn).LineageID)
' Find distance column index.
m_distanceIndex = Me.HostComponent.BufferManager.FindColumnByLineageID( _
input.Buffer, _
output.OutputColumnCollection(Me.DistanceOutputColumn).LineageID)
End Sub ' PreExecute
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Public Overrides Sub PostExecute()
Call MyBase.PostExecute()
m_firstIndex = -1
m_secondIndex = -1
m_distanceIndex = -1
End Sub ' PostExecute
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Public Function Validate(ByRef errMessage As String) As Boolean
Dim result As Boolean = True
Try
If String.IsNullOrEmpty(Me.FirstColumn) Then
Throw New Exception("Select first string column.")
End If
If String.IsNullOrEmpty(Me.SecondColumn) Then
Throw New Exception("Select second string column.")
End If
If String.IsNullOrEmpty(Me.DistanceOutputColumn) Then
Throw New Exception("Specify distance output column.")
End If
Dim managedComponent As CManagedComponentWrapper = Me.ComponentMetaData.Instantiate()
Dim input As IDTSInput100 = Me.ComponentMetaData.InputCollection(0)
Dim virtInput As IDTSVirtualInput100 = input.GetVirtualInput()
Call input.InputColumnCollection.RemoveAll()
' Setup selected first column.
Dim firstColumn As IDTSInputColumn100 = managedComponent.SetUsageType( _
input.ID, _
virtInput, _
virtInput.VirtualInputColumnCollection(Me.FirstColumn).LineageID, _
DTSUsageType.UT_READONLY)
' Setup selected second column.
Dim secondColumn As IDTSInputColumn100 = managedComponent.SetUsageType( _
input.ID, _
virtInput, _
virtInput.VirtualInputColumnCollection(Me.SecondColumn).LineageID, _
DTSUsageType.UT_READONLY)
' Setup distance output column.
Dim output As IDTSOutput100 = Me.ComponentMetaData.OutputCollection(0)
Try
Dim column As IDTSOutputColumn100 = output.OutputColumnCollection(Me.DistanceOutputColumn)
Catch ex As Exception
' Doesn't exist. Create it.
Call output.OutputColumnCollection.RemoveAll()
Dim distanceColumn As IDTSOutputColumn100 = output.OutputColumnCollection.[New]()
distanceColumn.Name = Me.DistanceOutputColumn
distanceColumn.SetDataTypeProperties(DataType.DT_I4, 0, 0, 0, 0)
End Try
Catch ex As Exception
result = False
errMessage = ex.Message
End Try
Validate = result
End Function 'Validate
#Region "Properties"
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Public Property FirstColumn() As String
Get
FirstColumn = m_firstColumn
End Get
Set(ByVal value As String)
m_firstColumn = value
End Set
End Property ' FirstColumn
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Public Property SecondColumn() As String
Get
SecondColumn = m_secondColumn
End Get
Set(ByVal value As String)
m_secondColumn = value
End Set
End Property ' SecondColumn
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Public Property DistanceOutputColumn() As String
Get
DistanceOutputColumn = m_distanceColumn
End Get
Set(ByVal value As String)
m_distanceColumn = value
End Set
End Property ' DistanceOutputColumn
#End Region ' Properties
#Region "Internals"
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' Compute the distance between two strings.
' Returns Levenshtein cost.
Private Shared Function GetLevenshteinDistance_(ByVal s As String, ByVal t As String) As Integer
Dim n As Integer = s.Length
Dim m As Integer = t.Length
Dim d(,) As Integer = New Integer(n, m) {}
' Step 1.
If n = 0 Then
Return m
End If
If m = 0 Then
Return n
End If
' Step 2.
For i As Integer = 0 To n
d(i, 0) = i
Next
For j As Integer = 0 To m
d(0, j) = j
Next
' Step 3.
For i As Integer = 1 To n
' Step 4.
For j As Integer = 1 To m
' Step 5.
Dim cost As Integer = CInt(IIf(t(j - 1) = s(i - 1), 0, 1))
' Step 6.
d(i, j) = Min(Min(d(i - 1, j) + 1, d(i, j - 1) + 1), d(i - 1, j - 1) + cost)
Next
Next
' Step 7.
GetLevenshteinDistance_ = d(n, m)
End Function ' GetLevenshteinDistance_
#End Region ' Internals
#Region "Attributes"
Private m_firstColumn As String
Private m_secondColumn As String
Private m_distanceColumn As String
Private m_firstIndex As Integer
Private m_secondIndex As Integer
Private m_distanceIndex As Integer
#End Region ' Attributes
End Class ' ScriptMain
]]> _
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 WriteOnly Property [DistanceColumn]() As Int32
Set
Me(0) = Value
End Set
End Property
Public WriteOnly Property [DistanceColumn_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 Overrides ReadOnly Property StaticOutputColumns() As String()
Get
Return New String() {"DistanceColumn"}
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
]]>{30D016F9-3734-4E33-A861-5E7D899E18F3};{F184B08F-C81C-45F6-A57F-5ABD9991F28F}DebugAnyCPU8.0.307032.0{B70EDA42-F424-49C5-A452-4CCC970781AE}LibraryMy ProjectScriptComponent_1a0573864a3f4d7b80a17ef67ec70461ScriptComponent_1a0573864a3f4d7b80a17ef67ec70461v4.0512BinaryOnOntruefullfalse.\bin\Debug\falsetruetrueprompt4falsetrue.\bin\Release\falsefalsetrueprompt4FalseC:\Program Files (x86)\Microsoft SQL Server\120\SDK\Assemblies\CozyRoc.SSISPlus.2014.dllFalseFalseFalseSSIS_SC120]]> _
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
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
]]>msBuildScriptComponent_1a0573864a3f4d7b80a17ef67ec70461ScriptComponent_1a0573864a3f4d7b80a17ef67ec70461{EE41601E-9C90-4A67-9C3D-F66A0EBBE74C}]]>CozyRoc.SqlServer.SSIS.ScriptComponentHostPlus, CozyRoc.SSISPlus.2014, Version=1.0.0.0, Culture=neutral, PublicKeyToken=16cf490bb80c34eaScriptComponent_1a0573864a3f4d7b80a17ef67ec70461VisualBasic