Kamaelia docs : Kamaelia.Util.UnseenOnly

UnseenOnly component

This component forwards on any messages it receives that it has not seen before.

Example Usage

Lines entered into this setup will only be duplicated on screen the first time they are entered:



class UnseenOnly(Kamaelia.Util.PureTransformer.PureTransformer)

UnseenOnly() -> new UnseenOnly component.

Send items to the "inbox" inbox. Any items not "seen" already will be forwarded out of the "outbox" outbox. Send the same thing two or more times and it will only be sent on the first time.

Methods defined here


You should be using the inbox/outbox interface, not these methods (except construction). This documentation is designed as a roadmap as to their functionalilty for maintainers and new component developers.

Methods inherited from Kamaelia.Util.PureTransformer.PureTransformer :


Got a problem with the documentation? Something unclear that could be clearer? Want to help improve it? Constructive criticism is very welcome - especially if you can suggest a better rewording!

Please leave you feedback here in reply to the documentation thread in the Kamaelia blog.

-- Automatic documentation generator, 05 Jun 2009 at 03:01:38 UTC/GMT

Kamaelia is an open source project originated from and guided by BBC Research. For more information browse the site or get in contact.

This is an ongoing community based development site. As a result the contents of this page is the opinions of the contributors of the pages involved not the organisations involved. Specificially, this page may contain personal views which are not the views of the BBC. (the site is powered by a wiki engine)

(C) Copyright 2008 Kamaelia Contributors, including the British Broadcasting Corporation, All Rights Reserved.

This web site is powered by the same code created for the bicker manor project. For more details, contact Michael Sparks at BBC Research directly (cf contact)