title: Update file after FlatFileItemReader in Spring Batch
body: <p>I currently have the following processing in a Spring Batch job:</p>
  
  <ul>
  <li>FlatFileItemReader reads a CSV file</li>
  <li>Processor does some work</li>
  <li>FlatFileItemWriter creates a mirror of the read file, but updates the file to reflect processing</li>
  </ul>
  
  <p>I don't want to write to a new file, but I want to update the same file that is being read during processing.</p>
  
  <p>My question is, is there a typical method in Spring to use the FlatFileItemReader and then update that same file per row in the processor at runtime?</p>
  
  <p>Thanks for any help.</p>