Get The List Of Variables In A Package Inside A Custom Component

Oct 26, 2006

Hi

I am developing custom dataflow component ,I need to get the of variables of the current package in the component , how can i get it?

Thanks

Mani





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Reference Package Level Variables In A Script Component.

Feb 27, 2006

I am trying to reference a package level variable in a script component (in the Code) and am unable to do so successfully. I have it listed as a ReadOnlyVariables in the custom properties of the script component, however unable to reference it in the code.

Any help will be appreciated.

Thanks,

Andy.

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How To Access Package Variables In A Custom Task

Jul 3, 2006

Hi Everyone,

I created a script task that uploads a file to a HTTPs site. The script task works well and now I want to turn this script task into a custom component...

I'm having problems on how to call the variables I have in the package, I already locked them for reading, but how am I suppose to access them and how can I put their values into strings so I can easily call them in the WebClient.UploadFile method?

Also, I am very new to custom tasks in SSIS.. and would appreciate if anyone of you can send me something (code, link, etc.) of a very simple custom task without any form or properties, that I can try to study.

Basically, what I want my custom task to do is,

1. Read the varialbes in the package.
2. use the variables values as input in my WebClient.UploadFile("varURLstring", "PUT", "varFilePath")

as you can see, my custom task is really simple... but I'm a noob here and I don't know where to go.

Thanks in advance,
Kervy

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Accessing A Package's Variables From Within A Custom Log Provider...or Not...

Feb 21, 2007

Hi,

Given that Task.Validate() exposes the package's VariableDispenser, but LogProviderBase.Validate() doesn't...

http://msdn2.microsoft.com/fr-fr/library/microsoft.sqlserver.dts.runtime.task.validate.aspx

http://msdn2.microsoft.com/fr-fr/library/microsoft.sqlserver.dts.runtime.logproviderbase.validate.aspx

...I guess that simply means that I can't access a package's variables within a custom log provider? Can anyone comment/confirm? Any other options/routes to achieving the same..?

We live in hope,

Tamim.

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Reading Package Variables From Custom Log Provider

Oct 1, 2007

I am interested in determining if package variables can be read from a custom log provider. I am able to pass the values into the custom log provider using an expression in a custom connection manager. My intention is to used the values of these variables upon package failure so I can capture the context of the failure. Unfortunately, if the value of the variable is changed at runtime, this update is not reflected in the custom log provider.

Is it possible to get direct access to the package variables from the custom log provider?

Thanks,
Marc

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Mapping Package Variables To A SQL Query In An OLEDB Source Component

Nov 2, 2006

Learning how to use SSIS...

I have a data flow that uses an OLEDB Source Component to read data from a table. The data access mode is SQL Command. The SQL Command is:

select lpartid, iCallNum, sql_uid_stamp
from call where sql_uid_stamp not in (select sql_uid_stamp from import_callcompare)

I wanted to add additional clauses to the where clause.

The problem is that I want to add to this SQL Command the ability to have it use a package variable that at the time of the package execution uses the variable value.

The package variable is called [User::Date_BeginningYesterday]

select lpartid, iCallNum, sql_uid_stamp
from call where sql_uid_stamp not in (select sql_uid_stamp from import_callcompare) and record_modified < [User::Date_BeginningYesterday]

I have looked at various forum message and been through the BOL but seem to missing something to make this work properly.

http://msdn2.microsoft.com/en-us/library/ms139904.aspx

The article, is the closest I have (what I belive) come to finding a solution. I am sure the solution is so easy that it is staring me in the face and I just don't see it. Thank you for your assistance.

...cordell...

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How To Read The Names Of Package Variables In Custom Task

Nov 22, 2005

Hi there,

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Custom Task: How To Access/modify The Variables Of A Package

Feb 1, 2007

Hi,

I'm trying to simplify the deployment process of my project. I already had some troubles with the config files but lets say I solved that issue. I'm going to read a flat file and set the variables of my packages from this file. I was thinking to use a Script Task to do that but I will need to copy this task in every package (I have at least 30). So if I want to make some change this will be painful.

Then, I came up with the idea of creating a Custom Task called Config File Task. I'm working on this but I got stuck trying to get the variables from the package that is running my Config File Task.

This is the code I had in the Script Task:

Dim streamReader As New StreamReader(Dts.Variables("ConfigFilePath").Value.ToString)
Dim line As String
Dim lineArray As String()
Dim variableName As String
Dim variableValue As String
Dim readConfigurations As Boolean = False

While (streamReader.Peek() <> -1)
line = streamReader.ReadLine()
If line = "[CONFIGURATIONS]" Then
readConfigurations = True
ElseIf line = "[/CONFIGURATIONS]" Then
readConfigurations = False
Else
If readConfigurations And line <> "" Then
lineArray = line.Split("|".ToCharArray())
variableName = lineArray(0).Trim()
variableValue = lineArray(1).Trim()

If Dts.Variables.Contains(variableName) Then
Dts.Variables(variableName).Value = variableValue
End If
End If
End If
End While
Dts.TaskResult = Dts.Results.Success

All I want to do is set the variables that exists in each package from the config file. In my UI Class (ConfigFileTaskUI.cs) I can have access to the variables via the TaskHost which is passed as an argument of Initialize() method.

Any thoughts? I'd really appreciate some help!

P.S. I've been working on this for 2 days!

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Package With A Custom Component (log Provider) Runs In BIDS, But Doesn't Run Where Deployed.

Feb 14, 2007

Hi,

I have a package with a custom log provider, which runs in BIDS. However when I deploy the package onto SQL Server and run it on the deployed machine, if fails:



"failed to decrypt protected XML node DTS:Password...key not valid for use in specified state..."

Now this is definately to do with the custom log, as if I take it out & redeploy, I can run it on the deplyed server + also run it within a job. I have entered the custom log provider library (+ other required DLLs) in the GAC on the deployed machine, but I'm clearly missing something.

Any ideas pls??? I'm really stuck.

Many thanks in advance,

Tamim.

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HowTo: Read/write Package Level Variables In Custom Task

Oct 13, 2006

Hello all,

I have been struggling trying to read and/or write package level variables from within my custom task.  I'd like to be able to get and set values from within the Execute method of my custom task.  I have searched this forum and the books online and can't seem to find the answer.  I thought maybe I could use an expression on my task (mapping the package variable to a custom task public property) but that doesn't seem to be working for me.  I also would have thought I could use the VariableDispenser object from within my task but the collection is empty.  I have 3 package level variables configured and can't seem to find a way to access them (with intentions of getting/setting).  Could someone point me to a good doc or provide an example that may accomplish this?  Thanks!

(I'm using package level variables as a means of passing simple information between tasks that are not using a DB, if there is a better way I'm open to suggestions.)

Jay_G

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Mar 16, 2007

In a Data Flow, I have the necessity to use a SSIS variable of type €œObject€? inside Script Component and assign to it the content of 'n' variables of string type.
On exiting from the script the variable of type object should contain something like in the following lines:
AAAAAAAAAAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBBBBBBBB
CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
DDDDDDDDDDDDDDDDDDDDDDDDDDDDD
€¦€¦€¦€¦€¦€¦€¦.
€¦€¦€¦€¦€¦€¦€¦.
On exiting from the data flow I will use the variable of type Object in a Script Task, by reading each element in a cyclic fashion.
Is there anyone who have experienced something like this? Could anyone provide any example of that?
Thanks in advance!

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Serious Script Component Bug - Clears Out All Code Inside Component

Nov 27, 2007



No idea where this bug crept in from. Have been using SSIS for 1.5 years now without hitting this problem.

I had a script component opening an XML document and parsing it using XPATH. I added some code that uses StreamReader / Streamwriter (closing one stream before starting the other). The code works without issue in my C# app.

And it ran without issue 2-3 times in SSIS. Then suddenly after running my package again, the script component says it completes successfully, yet nothing happens. I set a breakpoint on the first line of code - it never hits it. I add a msgbox as the first line of code - and it never displays.

I then close my package / exit out of ssis ... and then re-open it. When i open my script component, all of my code is GONE. All references that I added are gone.

I tried adding the streamreader/writer process to a dll I created from my c# app ... and added the DLL to the package -- same result.

I can reproduce this on 2 different computers.

Anyone experience this problem ? Any idea how to stop it ? Or debug it ?


Here is a slimmed down code sample of what causes the error :


Public Class ScriptMain
Public Sub Main()
Try
Dim xmlDoc As New XmlDocument
xmlDoc.Load("c:ulkasync_86281519_20070628045850225_4.xml")
MsgBox("xmlLoaded") --this doesn't display once the package starts "acting up"
Catch ex As Exception
MsgBox(ex.Message)
UpdateXML("c:ulkasync_86281519_20070628045850225_4.xml", ex.Message)
End Try
Dts.TaskResult = Dts.Results.Success
End Sub
Private Sub UpdateXML(ByVal fileName As String, ByVal message As String)
Try
Dim invalidChar As String = message.Trim().Substring(message.Trim().IndexOf("0x"), 4)
Dim rd As StreamReader = New StreamReader(fileName)
Dim xml As String = rd.ReadToEnd()
Xml = Xml.Replace(invalidChar, String.Empty)
xml = xml.Replace("", String.Empty)
xml = xml.Replace("<![CDATA[<![CDATA[", "<![CDATA[")
xml = xml.Replace("]]>]]>", "]]>")
MsgBox("replaced")
rd.Close()
Dim wr As StreamWriter = New StreamWriter(fileName)
wr.Write(xml)
wr.Close()
Dim xdoc As XmlDocument = New XmlDocument()
xdoc.Load(fileName)
Catch ex As Exception
UpdateXML(fileName, ex.Message)
End Try
End Sub
End Class

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Aug 13, 2007

Hi all
I'm into a project which uses a lot of views for joining 2 or more tables. Using the MERGE component in SSIS will be a huge effort coz it only has 2 inputs and I gotta SORT the input too.
Isnt it possible to have a VIEW like component that joins more than 2 tables and DOESNT need sorting??
(I've thought about creating views in database engine but it breaks my data floe in SSIS and is'nt a practical solution)

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Mar 30, 2006

I am writing a custom dataflow transformation component and I need to get the name of the preceeding component.

I have been trying to find a way to get a reference to the Package object, MainPipe object or IDTSPath90 object (connecting to the IDTSInput90 of my component) from my component because I think from there I can get to the information I want.

Does anyone have any suggestions?

TIA . . . Ed

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Expression Editor On Custom Properties On Custom Data Flow Component

Aug 14, 2007

Hi,

I've created a Custom Data Flow Component and added some Custom Properties.

I want the user to set the contents using an expression. I did some research and come up with the folowing:





Code Snippet
IDTSCustomProperty90 SourceTableProperty = ComponentMetaData.CustomPropertyCollection.New();
SourceTableProperty.ExpressionType = DTSCustomPropertyExpressionType.CPET_NOTIFY;
SourceTableProperty.Name = "SourceTable";






But it doesn't work, if I enter @[System:ackageName] in the field. It comes out "@[System:ackageName]" instead of the actual package name.

I'm also unable to find how I can tell the designer to show the Expression editor. I would like to see the elipses (...) next to my field.

Any help would be greatly appreciated!

Thank you

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Expression Issue With Custom Data Flow Component And Custom Property

Apr 2, 2007

Hi,



I'm trying to enable Expression for a custom property in my custom data flow component.

Here is the code I wrote to declare the custom property:



public override void ProvideComponentProperties()

{


ComponentMetaData.RuntimeConnectionCollection.RemoveAll();

RemoveAllInputsOutputsAndCustomProperties();



IDTSCustomProperty90 prop = ComponentMetaData.CustomPropertyCollection.New();

prop.Name = "MyProperty";

prop.Description = "My property description";

prop.Value = string.Empty;

prop.ExpressionType = DTSCustomPropertyExpressionType.CPET_NOTIFY;



...

}



In design mode, I can assign an expression to my custom property, but it get evaluated in design mode and not in runtime

Here is my expression (a file name based on a date contained in a user variable):



"DB" + (DT_WSTR, 4)YEAR( @[User::varCurrentDate] ) + RIGHT( "0" + (DT_WSTR, 2)MONTH( @[User::varCurrentDate] ), 2 ) + "\" + (DT_WSTR, 4)YEAR( @[User::varCurrentDate] ) + RIGHT( "0" + (DT_WSTR, 2)MONTH( @[User::varCurrentDate] ), 2 ) + ".VER"



@[User::varCurrentDate] is a DateTime variable and is assign to 0 at design time

So the expression is evaluated as: "DB189912189912.VER".



My package contains 2 data flow.

At runtime,

The first one is responsible to set a valid date in @[User::varCurrentDate] variable. (the date is 2007-01-15)

The second one contains my custom data flow component with my custom property that was set to an expression at design time



When my component get executed, my custom property value is still "DB189912189912.VER" and I expected "DB200701200701.VER"



Any idea ?



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Apr 21, 2006

1) We are writing a custome Source component for Oracle with OCI calls, Could some one please let me know how to Enable Error Handling for the Same,

2) Is it possible to write Custome Error Handeling Component for SSIS? if yes could you please help me on how to write it.

Thanks in advance.

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Aug 17, 2005

What I want to accomplish is that at design time the designer can enter a value for some custom property on my custom task and that this value is accessed at executing time.

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Sep 4, 2006

Hi,

I am not comfortable with DTS 2000 but I need to execute a encapsulated DTS 2000 package from a SSIS package. The real problem is when I need to pass SSIS variables to DTS 2000 package. The DTS 2000 package have 3 global variables that I can identify on " Execute DTS 2000 Package Task Editor - Inner Variables ". I believe the SSIS variables must be mapped on " Execute DTS 2000 Package Task Editor - OuterVariables ". How can I associate the SSIS variables(OuterVariables ) to "Inner Variables"? How can I do it? Much Thanks.

João





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Jan 24, 2006

Hi,

I would like to design a SSIS package, which have couple of variables. It loads a xls file specified in a variable [varExcelFileFullPath] .

I will run it by commands: exec xp_cmdshell 'dtexec /SQL ....' (pls see an example below).

It seems it does not get the values passed in for those variables. I deployed the package to a sql server.

are there any grammar errors here? I copied it from dtexecui. It worked inside Dtexecui not in dos command.

exec xp_cmdshell 'dtexec /SQL "LoadExcelDB" /SERVER test /USER *** /PASSWORD ****

/MAXCONCURRENT " -1 " /CHECKPOINTING OFF /REPORTING EW

/LOGGER "{6AA833A1-E4B2-4431-831B-DE695049DC61}";"Test.SuperBowl"

/Set Package.Variables[User::varExcelFileName].Properties[Value];"TestAdHocLayer"

/Set Package.Variables[User::varExcelWorkbookName].Value;"Sheet1$"

/Set Package.Variables[User::varExcelFileFullPath].Value;"D: estshareTestAdHocLayer.xls"

/Set Package.Variables[User::varDestinationTableName].Value;"FeaturesTmp"

/Set Package.Variables[User::varPreSQLAction].Value;"delete from FeaturesTmp"

'



thanks,



Guangming

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Jul 22, 2007



Hi,



I have a script component and under input columns, I checked one of the fields I want to use inside the script. It's under the Input 0 in the hierarchical tree inside the inputs and outputs.



How do i use this inside the script?



cherriesh

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Jan 7, 2008



Hi,

I'm experiencing a problem I think I should not in my COM+ application. I will describe the setup first and then will expose the problem.

It's a simple COM+ application (dll). Inside it, there's a method to save an object A. Object A is persisted in a table in SQL Server 2000 that uses an identity field for the primary key. What this method does is the following:
1) Insert the record for Object A via ADO
2) Retrieve the Id for the object using SCOPE_IDENTITY via ADO and set it on the object
3) Execute an UPDATE statement based on a certain condition via ADO (this UPDATE statement will fire a trigger, however the trigger will not do anything since the record does not answer the criteria for the trigger)
4) Insert a record for another Object A via ADO
5) Retrieve the Id for the object using SCOPE_IDENTITY via ADO and set it on the object

When I get to step (5), an error is raised because SCOPE_IDENTITY returns NULL. This is as if it was returning the Identity value for the trigger that did not cause any INSERT on the UPDATE statement in (3). All the steps are performed using a single connection.

The trigger will duplicate the updated record in another table if a certain flag is set, so in my case, it was not set yet.

It's just weird that this would happen. If I delete the trigger, everything works fine. @@IDENTITY gives me the same problem. It's really as if the trigger was taking over or something and unless I put something between the two steps I get this error. There's one thing though. In step (3), I was using the adCmdText flag for the ADO statement. If I use adExecuteNoRecords it works fine. However I don't understand why it would be this way, I'm trying to understand why it's not working to begin with, even though the sequence of the steps performed should.

Any idea why this would happen?

Thanks,

Greg

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Jun 15, 2006

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Now, I'm putting a false date because of I'm stuck with this f.. and then I do an update:

.Parameters("@FecEnajenacion").Value = "1999-01-01"

error:

.Parameters("@FecEnajenacion").Value = vbNull

.Parameters("@FecEnajenacion").Value = Null

.Parameters("@FecEnajenacion").Value = SqlDbType.???????

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Apr 25, 2006

Hi all,

I have a class that utilizes the ThreadPool together with a ManualResetEvent to queue up work items (in this case, FTP downloads) and then waits until all work items have completed before proceeding.

I then use this class inside a Script Component. However, I am getting a "remote procedure call failed" every single time the FTP component starts a download. This same class works perfectly in a WinForm app that I created as a test harness. Also, the synchronized version of the FTP download component works perfectly well from the Script Task -- it's only when I "wrap" the synchronous version in a threaded version that it fails.

Also, when the "remote procedure call failed" exception occurs, sqldumper.exe runs for a split second and creates a minidump. I, unfortunately, cannot inspect the dump because VS2k5 throws a native error when I try to "debug" the dump.

Is it possible to utilize multithreaded code inside SSIS? I noticed that SQL Server prohibits the use of threading as part of its hosting requirements (http://msdn2.microsoft.com/en-us/library/ms172338.aspx) but I'm not sure how that would impact (if at all) the SSIS host.

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Feb 14, 2006

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Mar 12, 2008

Hi all,

I use a "Exec DTS 2000" task.

I have a variable user::MYVAR in my SSIS package, wich value is "PARENT".

I pass this variable as an outer variable to my dts 2000 package, wich receive it correctly, and then update it to "UPDATED".

After this task finishes, when I come back to SSIS, MYVAR is still at "PARENT".


Is it possible to see the update from the parent package ?


Thanks

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Mar 11, 2008

I've been looking around but haven't yet found the syntax for usage of global variables in an SQL Task.

I've set the global variable Id (see code below):

if (select field from table where id = @[User::id]) is null
select top 1 1 as response from table
else select top 1 0 as response from table

My objective with it is to set another global variable (@isNull). Supposably, when the selection returns null, I should set the variable to null, I did it by using the selections and mapping the response to that variable (is ther a better way to do so?).

When I try to execute this, it says the variable has not been defined.
Here is the error:

Error: Must declare the variable '@'.

I've also tryed it withou the brackets and the User:: thing in the beggining, (@id directly) and here is the response:

Error: Must declare the variable '@id'.

How should I access the global variables in the SQL code?
(BTW, I've checked the field in execution time and it is set to 23, the correct Id, so the block that preceedes this one is working properly)

Thanks,




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Feb 6, 2007



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I cannot find a way of opening the reference data set from withing the transform.

Regards



Tim

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Oct 26, 2007

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Apr 3, 2006

Hi,

I'm trying to use an OLE DB connection manager from inside a custom log provider, but can't get the code to work - I get an exception "A first chance exception of type 'System.InvalidCastException' occurred in SSEALogProvider.dll" on the last line of the code below.

I know the connection is OLE DB from looking at .CreationName.

I've tried both with & without ToConnectionManager90(), but appearently not in the right way, both cases gives the same exception.

Any tips on what I'm missing? All the examples I've seen are either creating (instead of using) connection managers, or are file based connection managers. Any and all help much appreciated!



Thanks/Kristian



if (this.ConfigString.Length == 0 || connections.Contains(ConfigString) == false ||

connections[ConfigString].CreationName != "OLEDB")

{

infoEvents.FireError(0, "SSEALogProvider", "The ConnectionManager " + ConfigString + " specified in the ConfigString property cannot be found in the collection, or is of the wrong type (expected CreationName='OLEDB'.)", "", 0);

return Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure;

}

else

[...]



public override void OpenLog()

{

if (!connections.Contains(this.ConfigString))

throw new Exception("The ConnectionManager " + this.ConfigString + " does not exist in the Connections collection.");

ConnectionManager connectionManager = connections[ConfigString];

IDTSConnectionManager90 connectionManager90 = DtsConvert.ToConnectionManager90(connectionManager);

object connObj = connectionManager90.AcquireConnection(null);

//ConnectionManagerOleDb connectionManagerOleDb = (ConnectionManagerOleDb)(connectionManager.InnerObject);

//object connObj = connectionManagerOleDb.AcquireConnection(null);

if (connObj == null)

{

events.FireError(0, "SSEALogProvider", "Could not connect to the log database with connection string " + ConfigString + ".", "", 0);

return;

}

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OleDbConnection oledbConnection = (OleDbConnection)connObj;

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Mar 30, 2008

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The database table is called "friday" and the one and only column is called "Tickets".
Here's the code behind the button:protected void Button1_Click(object sender, EventArgs e)
{SqlConnection conn;
conn = new SqlConnection("Data Source=***;Initial Catalog=***;Persist Security Info=True;User ID=***;Password=***");
conn.Open();int count = -1;
 SqlCommand cmd = new SqlCommand("select Tickets from friday", conn);
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{
 string updateString = @"
update friday
set Tickets = 500" ;   <------ Here I want to set Tickets like "current count -1"SqlCommand cmd2 = new SqlCommand(updateString);
cmd2.Connection = conn;
cmd2.ExecuteNonQuery();
}
else
{
}
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May 19, 2006

Hi

I am writing a custom transformation component that utilises a user variable.

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Is there a way to add a user variable with package scope from a custom component, either at run time or design time?

Thanks . . . Ed

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