Hi, I'd like to create a pipeline composed of filters that have different input and output character type. For example: file -> | Source | -> char -> | F1 | -> message -> | F2 | where F1 and F2 are input filters. F1 can be kind of a parser that would cut the stream into messages. The thing is that I could always rewrite a file_source but I think it's not a good design. What would you suggest? Thanks, ____________________________ Frederic MAYOT Société Générale - Equity IT 1221 Avenue of the Americas New York, NY 10020 +1 (212) 278-5558 +1 (917) 673-1339 ************************************************************************* This message and any attachments (the "message") are confidential and intended solely for the addressees. Any unauthorised use or dissemination is prohibited. E-mails are susceptible to alteration. Neither SOCIETE GENERALE nor any of its subsidiaries or affiliates shall be liable for the message if altered, changed or falsified. *************************************************************************