Using a existing connection in a Script Component (SSIS)

Question

I have am OLEDB Connection configured in the connection managers and I want to use it in a SCRIPT. The script needs to call a stored proc and then create buffer rows. I have added the connection to the connections available to the script and this is my code.

Boolean fireagain = true;

SqlConnection conn = new SqlConnection();

conn = (SqlConnection)(Connections.Connection
    .AcquireConnection(null) as SqlConnection);


SqlCommand cmd = new SqlCommand();

conn.Open();

ComponentMetaData.FireInformation(
           0, "Script", "Connection Open", string.Empty, 0, ref fireagain);

cmd.Connection = conn;
cmd.CommandText = "up_FullTextParser_select" ;
cmd.CommandType = CommandType.StoredProcedure;

cmd.Parameters.AddWithValue("Phrase", DbType.String).Value = Row.Keywords;
cmd.Parameters.AddWithValue("SpecialTerm", DbType.String).Value = "Exact match";
cmd.Parameters.AddWithValue("StopListId", DbType.Int32).Value = 0;
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);

while (rdr.Read())
{
    TermsBuffer.AddRow();

    TermsBuffer.Term = rdr[0].ToString();
}

conn.Close();

Anyway, it seems to fail on the AcquireConnection. Am I converting this wrong? Should I be using a different way to using the connections defined outside the script?.

Solution 1

You cannot cast an OLEDB connection to SqlConnection object. You must use the OleDbConnection object. See the example - http://blogs.msdn.com/b/mattm/archive/2008/08/22/accessing-oledb-connection-managers-in-a-script.aspx

Solution 2

If you insist on using an OLEDB connection, you cannot use AcquireConnection but you can extract the connection string and then use it to create an OLEDB connection:

string connstr = Dts.Connections["my_OLEDB_connection"].ConnectionString;
System.Data.OleDb.OleDbConnection objConn = new System.Data.OleDb.OleDbConnection(connstr);   

This may not work if the connection string is created via an expression of some sort.

Solution 3

You need to use a managed connection provider.

Solution 4

This MSDN example implies that you using AcquireConnection incorrectly.

View more solutions

Comments

[Carlo V. Dango]

Those cast simply returns null on my computer :(

[Jabez]

Also refer this stackoverflow.com/questions/11867639/…

[BigSmoke]

The example you link to is for a Script Task, not for a Script Component. Within a Script Component, the Dts object doesn't exist.

[BigSmoke]

@Jabez links to a question about a Script Task. A Script Task is not the same as a Script Component.