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Using SSIS to convert csv to xml

Posted on 2008-06-10
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Last Modified: 2013-11-07
I have a sample CSV file containg data in the following format:

CandidateID,CQN,CentreCode,ExamRef,Forename,Surname,Middlename,DOB,Gender
123456,ABC123,A0001CZ,XYZ123,Joe,Blogs,,21/02/1990,M
123456,ABC124,A0001CZ,XYZ987,Joe,Blogs,,21/02/1990,M
123457,ABC125,B0006CZ,XYZ123,Jane,Blogs,,18/05/1990,F
123457,ABC126,B0006CZ,XYZ987,Jane,Blogs,,18/05/1990,F

I need to convert this csv data into xml format which will provide the xml source for an SSIS package I have written. The xml source needs to be in the following format:

<data>
 <user>
   <id>0</id>
   <forename>Dave</forename>
   <surname>Dixon</surname>
   <middleName>Wakefield</middleName>
   <dob>07/10/1982</dob>
   <gender>M</gender>
   <addressLine1>31 Marlborough Road</addressLine1>
   <addressLine2/>
   <town>Shipley</town>
   <county>7</county>
   <country>0</country>
   <postCode>BD18 3NX</postCode>
   <telephone>22222</telephone>
   <email>example@test.com</email>
   <ethnicOrigin>0</ethnicOrigin>
   <accountExpiryDate>07/03/2009</accountExpiryDate>
   <username>user_xyz</username>
   <extraInfo>
     <specialRequirements/>
   </extraInfo>
   <specialRequirements/>
   <candidateRef>xyz</candidateRef>
   <centreRoles>
     <centre id="1">
       <added>
         <i>6</i>
       </added>
       <removed/>
     </centre>
   </centreRoles>
   <centres>
     <added/>
     <removed/>
   </centres>
   <qualifications>
     <added/>
     <removed/>
   </qualifications>
   <retired>0</retired>
 </user>
</data>

Is it possible to transform the CSV data to XML in SSIS? Thanks
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Question by:meninga
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6 Comments
 
LVL 8

Expert Comment

by:srnar
ID: 21751707
Yes it is possible. You can import the CSV into a SQL Server table and then use SELECT FOR XML AUTO statement. Try this link:

msdn defintion
http://msdn.microsoft.com/en-us/library/ms173812.aspx

Longer text from magazin:
http://msdn.microsoft.com/en-us/library/aa175790(SQL.80).aspx
0
 

Author Comment

by:meninga
ID: 21752734
Thanks smar. I want to avoid using a staging table so I've worked out how to transform the data using the Script Component. This XML now complies to the format required to execute a stored procedure.
0
 
LVL 8

Expert Comment

by:srnar
ID: 21753813
Congratulations. Do you mean SSIS Script task? In version 2005 it can be coded only in VB.NET - it has nothing to do with C#.
0
 

Accepted Solution

by:
meninga earned 0 total points
ID: 21758000
smar, theres a script component within the data flow task in SSIS 2005 and I have used this for the conversion (an existing stored procedure needs this xml as a parameter).  The script is in VB.Net and I have posted it below in case you find this handy in the future...
I was tempted to write a web method in c# and convert the CSV into xml using xslt but as I will be needing to process large amounts of data, I thought it would be better to use an SSIS based approach. Then we can just place the CSV in the required directory and launch the SSIS package and our DB is updated appropriately.

Imports System
 
Imports System.Data
 
Imports System.Math
 
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
 
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
 
Imports System.IO
 
Imports System.Reflection
 
Public Class ScriptMain
 
    Inherits UserComponent
 
    Private targetFile As String
 
    Private xmlWriter As StreamWriter
 
    Private rootElement As String = "Data"
 
    Private rowElement As String = "User"
 
    Private columns As Integer()
 
    Private columnames As String()
 
    Public Overrides Sub AcquireConnections(ByVal Transaction As Object)
 
        targetFile = CType(Me.Connections.TestConnection.AcquireConnection(Nothing), String)
 
    End Sub
 
    Public Overrides Sub PreExecute()
 
        xmlWriter = New StreamWriter(targetFile, False)
 
        xmlWriter.WriteLine(FormatElement(rootElement))
 
        Dim input As IDTSInput90 = ComponentMetaData.InputCollection(0)
 
        ReDim columns(input.InputColumnCollection.Count)
 
        columns = Me.GetColumnIndexes(input.ID)
 
        Dim column As IDTSInputColumn90
 
        ReDim columnames(input.InputColumnCollection.Count)
 
        Dim counter As Integer
 
        counter = 0
 
        For Each column In Me.ComponentMetaData.InputCollection(0).InputColumnCollection
 
            columnames(counter) = column.Name
 
            counter = counter + 1
 
        Next
 
    End Sub
 
    Public Overrides Sub PostExecute()
 
        xmlWriter.WriteLine(FormatElement(rootElement, True))
 
        xmlWriter.Close()
 
    End Sub
 
    'Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
 
    '    Dim column As IDTSInputColumn90
 
    '    Dim rowType As Type = Row.GetType()
 
    '    Dim columnValue As PropertyInfo
 
    '    With xmlWriter
 
    '        .Write(FormatElement(rowElement))
 
    '        For Each column In Me.ComponentMetaData.InputCollection(0).InputColumnCollection
 
    '            columnValue = rowType.GetProperty(column.Name)
 
    '            Try
 
    '                .Write(FormatElement(column.Name) + columnValue.GetValue(Row, Nothing).ToString() + FormatElement(column.Name, True))
 
    '            Catch ex As Exception
 
    '                .Write(FormatElement(column.Name) + "" + FormatElement(column.Name, True))
 
    '            End Try
 
    '        Next
 
    '        .WriteLine(FormatElement(rowElement, True))
 
    '    End With
 
    'End Sub
 
    Public Overrides Sub ProcessInput(ByVal InputID As Integer, ByVal Buffer As Microsoft.SqlServer.Dts.Pipeline.PipelineBuffer)
 
        While Buffer.NextRow()
 
            xmlWriter.Write(FormatElement(rowElement))
 
            Dim counter As Integer
 
            counter = 0
 
            For Each index As Integer In columns
 
                Dim value As Object = Buffer(index)
 
                xmlWriter.Write(FormatElement(columnames(counter).ToString()) + value.ToString() + FormatElement(columnames(counter).ToString(), True))
 
                counter = counter + 1
 
            Next
 
            xmlWriter.WriteLine(FormatElement(rowElement, True))
 
        End While
 
    End Sub
 
    Private Function FormatElement(ByVal elementName As String) As String
 
        Return FormatElement(elementName, False)
 
    End Function
 
    Private Function FormatElement(ByVal elementName As String, ByVal closingTag As Boolean) As String
 
        Dim returnValue As String
 
        If closingTag Then
 
            returnValue = "</"
 
        Else
 
            returnValue = "<"
 
        End If
 
        returnValue += elementName + ">"
 
        Return returnValue
 
    End Function
 
End Class

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