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Message processing control in a publish/subscribe system

  • US 7,865,550 B2
  • Filed: 01/16/2009
  • Issued: 01/04/2011
  • Est. Priority Date: 01/21/2008
  • Status: Expired due to Fees
First Claim
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1. For use in a publish/subscriber system in which a published message originating with a publisher is identified by an associated topic string and originally includes a PubLevel value assigned by the publisher, a broker apparatus comprising:

  • a receiver component for receiving the published message;

    a subscriber selection component for selecting a subscriber from a set of one or more subscriber candidates that have registered a subscription with the broker to receive published messages identified by the associated topic string, each of said subscriber candidates having an associated SubLevel value;

    a publication control component for changing the PubLevel value associated with the published message as a function of the SubLevel value associated with the subscriber selected by the subscriber selection component; and

    a transmit component for forwarding the published message to the subscriber selected by the subscriber selection component.

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