File content Conversion Issuse for a Sender File Adapter

Hi All ,

I am working for a Migration project , so my File structure will be as follows

<HEADER>

<DATA1>

<DATA2>

<DATA3>

<HEADER>

<ITEM>

<ITEM1>

<ITEM2>

<ITEM3>

<ITEM>

WHERE i do have flat file will be as follows

10001,20081902,US

10,soda,1

30,soda,4

40,soda,5

10002,20081902,US

10,steel,1

30,steel,4

40,steel,5

how to pick this file using FCC from sendere flat file adapter without keyfields , and i can use fixed length also