File /FTP adapter -> Need to pull files that are 2 or more days old

XI experts,

We have SAP XI 3.0 in our landscape and have a unique requirement in XI where the business wants to pull files from File system only those files that are 2 or more days old .

I can do this by pulling all files thru a file adapter and then calling a proxy in R/3 to check the File Timestamp .. This file time-stamp will be mapped in XI using a Java function for accessing adapter specific attributes .

BUT , can we have some selection criteria in the file adapter itself where it will pull only those files that are 2 or more days old .... Maybe something in the Adapter modules ??? Would appreciate your reply .