SSIS Programming

  • U.K Padmaja

    SSC Enthusiast

    Points: 165

    Comments posted here are about the content posted at http://www.sqlservercentral.com/columnists/Upadmaja/3003.asp

  • Ram-425798

    Right there with Babe

    Points: 748

    Ms. Padmaja!

    First of all, an exemplary topic.

    As you mentioned, I would like to use  other approach that is to use the API to create, configure and run packages from own applications.

    I am using C#. What DLLs I must add it to this?

    Thanks and looking forward to hear from you.

    -

  • AndreQ1-315878

    SSC Journeyman

    Points: 78

    Given the great detail that's possible, and may be required, would it be possible to create additional libraries of functions that have many defaults set up. For example, the code below (taken from your article) would appear to be used for most text data files:

    cnFile.Properties("ColumnNamesInFirstDataRow").SetValue(cnFile, True)

    cnFile.Properties("DataRowsToSkip").SetValue(cnFile,0)

    cnFile.Properties("RowDelimiter").SetValue(cnFile,vbCrLf)

    cnFile.Properties("TextQualifier").SetValue(cnFile,"""")

    cnFile.Properties("HeaderRowsToSkip").SetValue(cnFile, 0)

    cnFile.Properties("HeaderRowDelimiter").SetValue(cnFile,vbCrLf)

    cnFile.Properties("CodePage").SetValue(cnFile,1252)

    It is not yet apparent to me the benefit of this technique over DTS for the majority of file transformations.

    Let me know if my reasoning on this issue makes sense.

    Thanks

    AndreQ1

  • U.K Padmaja

    SSC Enthusiast

    Points: 165

    Ram:

    I have given the assemblies to be referred in the article itself (see 3.Getting started)

    AndreQ1:

    You could combine the common (or default) settings into functions and can then be called appropriately.

    For simple file transfers, DTS and SSIS may not differ much. When it comes to Transformations, SSIS provides many new features when compared to DTS. You can have a look at MSDN for the different Transformations supported in SSIS. Hope that helps.

     

  • Ralph D. Wilson II

    Old Hand

    Points: 394

    After reviewing the article, I think it is probably an excellent article . . . if I wanted to create the SSIS package in a .NET language.  However, since I find writing a program in order to program an SSIS package to be, IMHO, taking the longest possible route to get from point A to point B, I believe that the title of the article is misleading.  THe title should be something more like "Programming an SSIS Package in .NET".

    What I expected, from the title, was an article on developing an SSIS package from within BIDS.  Needless to say, I was disappointed; howver, I will add this to my Briefcase on the off chance that I may need to perform a similar task.

  • Ram-425798

    Right there with Babe

    Points: 748

    Thanks Padmaja!

  • tk-639222

    SSC Journeyman

    Points: 81

    Hi Padmaja, Thank you for posting the code.

    But, I still have a problem while loading the header array. Below is my code

    Public Class ScriptMain

    Sub Main()

    ' Create a package and add a Data Flow task.

    Dim package As Microsoft.SqlServer.Dts.Runtime.Package = New Microsoft.SqlServer.Dts.Runtime.Package()

    package.PackageType = DTSPackageType.DTSDesigner90

    package.Name = "MySSISPackage"

    'Add Data Flow task

    Dim taskDF As TaskHost = TryCast(package.Executables.Add("DTS.Pipeline.1"), TaskHost)

    taskDF.Name = "DataFlow"

    Dim DTP As MainPipe

    DTP = TryCast(taskDF.InnerObject, MainPipe)

    ' Creating OLEDB Connection Manager

    Dim oleDbConn As ConnectionManager = package.Connections.Add("OLEDB")

    oleDbConn.Name = "MyOLEDBConnection"

    oleDbConn.ConnectionString = "Provider=SQLOLEDB.1;" & _

    "Data Source=" & Dts.Variables("DestServer").Value.ToString & ";Initial Catalog=" & Dts.Variables("DestDB").Value.ToString & ";Integrated Security=SSPI;"

    MsgBox(Dts.Variables("DestServer").Value.ToString)

    MsgBox(Dts.Variables("DestDB").Value.ToString)

    'Creating FlatFile Connection Manager

    Dim cnFile As ConnectionManager = package.Connections.Add("FLATFILE")

    cnFile.Properties("Name").SetValue(cnFile, "MyFlatFileConnection")

    cnFile.Properties("ConnectionString").SetValue(cnFile, Dts.Variables("SourceFile").Value.ToString)

    cnFile.Properties("Format").SetValue(cnFile, "Delimited")

    cnFile.Properties("Unicode").SetValue(cnFile, False)

    cnFile.Properties("ColumnNamesInFirstDataRow").SetValue(cnFile, True)

    cnFile.Properties("DataRowsToSkip").SetValue(cnFile, 0)

    cnFile.Properties("RowDelimiter").SetValue(cnFile, vbCrLf)

    cnFile.Properties("TextQualifier").SetValue(cnFile, """")

    cnFile.Properties("HeaderRowsToSkip").SetValue(cnFile, 0)

    cnFile.Properties("HeaderRowDelimiter").SetValue(cnFile, vbCrLf)

    cnFile.Properties("CodePage").SetValue(cnFile, 1252)

    Dim MyFlatFilecn As SSISRuntime.IDTSConnectionManagerFlatFile90 = Nothing

    MyFlatFilecn = TryCast(cnFile.InnerObject, SSISRuntime.IDTSConnectionManagerFlatFile90)

    DtsConvert.ToConnectionManager90(cnFile)

    Dim name As SSISRuntime.IDTSName90

    Dim col As SSISRuntime.IDTSConnectionManagerFlatFileColumn90

    cnFile.AcquireConnection(Nothing)

    ' Add columns to the FlatFileConnectionManager

    Dim headers As String()

    headers = Split((Dts.Variables("col1").Value.ToString), ",")

    'Dim headers As String() = {"col1", "col2", "col3", "col4"}

    'Get the header row from flat file. This can be stored in a database table as well.

    'Assuming that "headers" Array contains the headers

    Dim i As Integer = 0

    While i < headers.Length

    col = MyFlatFilecn.Columns.Add()

    If i = headers.Length - 1 Then

    col.ColumnDelimiter = vbCrLf

    Else

    col.ColumnDelimiter = ","

    End If

    col.ColumnType = "Delimited"

    col.DataType = Microsoft.SqlServer.Dts.Runtime.Wrapper.DataType.DT_WSTR

    name = TryCast(col, SSISRuntime.IDTSName90)

    name.Name = headers(i)

    'get the converSion information from the destination table

    'this should assign the appropriate datatype, precision, scale and length to col

    'getConversionInfo(col, name.Name) 'implement this

    i = i + 1

    End While

    cnFile.ReleaseConnection(Nothing)

    'Creating Data Flow which does the actual job of copying the data from flat file to table

    'For that, creating flat file Source

    Dim DFSource As IDTSComponentMetaData90

    DFSource = DTP.ComponentMetaDataCollection.New()

    DFSource.ComponentClassID = "DTSAdapter.FlatFileSource"

    DFSource.Name = "FlatFileSource"

    Dim Sourceinst As CManagedComponentWrapper

    ' Get the design time instance of the component.

    Sourceinst = DFSource.Instantiate()

    ' Initialize the component.

    Sourceinst.ProvideComponentProperties()

    ' Specify the connection manager.

    'If DFSource.RuntimeConnectionCollection.Count > 0 Then

    DFSource.RuntimeConnectionCollection(0).ConnectionManagerID = package.Connections("MyFlatFileConnection").ID()

    DFSource.RuntimeConnectionCollection(0).ConnectionManager = DtsConvert.ToConnectionManager90(package.Connections("MyFlatFileConnection"))

    'End If

    ' Reinitialize the metadata.

    Sourceinst.AcquireConnections(Nothing)

    Sourceinst.ReinitializeMetaData()

    Dim exOutColumn As IDTSExternalMetadataColumn90

    For Each outColumn As IDTSOutputColumn90 In DFSource.OutputCollection(0).OutputColumnCollection

    exOutColumn = DFSource.OutputCollection(0).ExternalMetadataColumnCollection(outColumn.Name)

    Sourceinst.MapOutputColumn(DFSource.OutputCollection(0).ID, outColumn.ID, exOutColumn.ID, True)

    Next

    Sourceinst.ReleaseConnections()

    'Add the OLEDB Destination

    Dim DFdestination As IDTSComponentMetaData90

    DFdestination = DTP.ComponentMetaDataCollection.[New]()

    DFdestination.ComponentClassID = "DTSAdapter.OLEDBDestination"

    DFdestination.Name = "OLEDBDestination"

    Dim DestInst As CManagedComponentWrapper = DFdestination.Instantiate()

    DestInst.ProvideComponentProperties()

    If DFdestination.RuntimeConnectionCollection.Count > 0 Then

    DFdestination.RuntimeConnectionCollection(0).ConnectionManagerID = package.Connections("MyOLEDBConnection").ID()

    DFdestination.RuntimeConnectionCollection(0).ConnectionManager = DtsConvert.ToConnectionManager90(package.Connections("MyOLEDBConnection"))

    End If

    'Set the customproperties of the source

    DestInst.SetComponentProperty("OpenRowset", Dts.Variables("DestTable").Value.ToString)

    DestInst.SetComponentProperty("AccessMode", 0)

    'reinitialize the Component

    DestInst.AcquireConnections(Nothing)

    DestInst.ReinitializeMetaData()

    DestInst.ReleaseConnections()

    'Map a Connection betwen the source and destination

    Dim path As IDTSPath90 = DTP.PathCollection.[New]()

    path.AttachPathAndPropagateNotifications(DFSource.OutputCollection(0), DFdestination.InputCollection(0))

    Dim input As IDTSInput90 = DFdestination.InputCollection(0)

    Dim destinationInputID As Integer = CInt(input.ID)

    Dim vInput As IDTSVirtualInput90 = input.GetVirtualInput()

    For Each vColumn As IDTSVirtualInputColumn90 In vInput.VirtualInputColumnCollection

    ' This will create an input column on the component.

    DestInst.SetUsageType(destinationInputID, vInput, vColumn.LineageID, DTSUsageType.UT_READONLY)

    ' Get input column.

    Dim inputColumn As IDTSInputColumn90 = input.InputColumnCollection.GetInputColumnByLineageID(vColumn.LineageID)

    ' Getting the corresponding external column.

    ' Ex : We will use the column name as the basis for matching data flow columns to external columns.

    Dim externalColumn As IDTSExternalMetadataColumn90 = input.ExternalMetadataColumnCollection(vColumn.Name)

    ' Tell the component how to map.

    DestInst.MapInputColumn(destinationInputID, inputColumn.ID, externalColumn.ID)

    Next

    'Validate the package

    MsgBox("Validating the package")

    Dim pkgStatus As DTSExecResult = package.Validate(Nothing, Nothing, Nothing, Nothing)

    'System.Console.WriteLine("Validationresult: " & pkgStatus.ToString())

    'Save the package

    Dim SSISExe As New Application()

    SSISExe.SaveToXml("C:\temp\MySSISPackage.dtsx", package, Nothing)

    'Execute the package

    If pkgStatus = DTSExecResult.Success Then

    MsgBox("Executing the Package")

    Dim pkgResult As DTSExecResult = package.Execute()

    MsgBox("Package validation success")

    Else

    MsgBox("Package Validation failed")

    End If

    End Sub

    End Class

    As you can see in the above code, I have tried to pass the column names into the header array in 2 ways. When I give the column names directly into the array like:

    (Dim headers As String() = {"col1", "col2", "col3", "col4"}) script is going good and the data is loaded into the destination table. But When I am trying to pass the column names using a variable like:

    ( Dim headers As String()

    headers = Split((Dts.Variables("col1").Value.ToString), ","), it throws the following error

    Error: The script threw an exception: Exception from HRESULT: 0xC0010009,DTS_E_ELEMENTNOTFOUND

    Please let me know, where am I going wrong

  • JBANKO

    SSC-Addicted

    Points: 403

    I'm using a VERY simple script that works to change my flat file connection path but can't get the syntax to set the DataRowsToSkip property of the connection. To change the path I'm using:

    Dts.Connections("ReturnDataFile").ConnectionString = Dts.Variables("FullPath").Value.ToString

    How would I change the datarowstoskip for an integer variable HEADR:

    Dts.Connections("ReturnDataFile").Properties("DataRowsToSkip") = Dts.Variables("HEADR").Value

    ?????????????

    Thanks,

    Joe B

  • umair.zubairy

    SSC Journeyman

    Points: 77

    Hi,

    It is very useful article at certain extent. I have a situation. I have to create an excel file and have to load data in different excel sheets of same excel file, and also i have to create excel file at runtime. Can anybody help me out in this regard

    Thanks

    Umair Zubairy

  • James Collett

    SSC Enthusiast

    Points: 149

    I'm confused.

    The article seems to be about using the SSIS instalation that comes with SQL Server 2005. However, the links out to the Microsoft web site reslove to pages that deal with SQL Server 2008, which is quite a different product.

  • mail.arun2005

    SSC Veteran

    Points: 247

    Learn more about programming SSIS packages in C# .net and VB .net from the below link:

    http://www.sqllion.com/2009/05/ssis-programming-basic/

    Thanks,

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