Designing reusable column transformations?

We receive thousands of files every week from various clients and we attempt to clean the columns using the same technique over and over so the data is consistent. The problem is I dont see a way to reuse complex column transformations in different packages. I would hate to have to go change every package if we change the rules for cleaning a column.

So #1: Can you create some kind of script or .net function that cleans a column and reuse it in multiple packages (or even in the same package)?

#2: Is it possible to call functions from the Derived Column expression builder?

Thanks!

1)May be. You always can use a script component with the transformation rules and copy and paste it many times; it that sounds reasonable to you.

2) No you can not.

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Craig, I have had do do the same thign.The best solution is not a script component, as the person above mentioned.

Take the hit, build a custom component. Once you get it built, adding a new column is as simple as adding a new column to the transform.

You will want to build a custom pipline component. Both Wrox and O'riely have some decent chapters decribing how to do this. and there is definately info in microsoft.

I have 350 packages, that all chagne time from european time to us time, in the data flow. By writing 1 component, once, I was able to then delegate the rest of the work, since the hard part was encapsulated in a compoent.

good luck