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Method for storing boolean functions to enable evaluation, modification, reuse, and delivery over a network

  • US 20030154193A1
  • Filed: 07/19/2002
  • Published: 08/14/2003
  • Est. Priority Date: 08/15/2001
  • Status: Active Grant
First Claim
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1. A method for storing subscriptions for a publish-subscribe network, comprising:

  • specifying a structure to store a subscription in the network;

    dividing the structure into a plurality of sub-expressions;

    using the sub-expressions to collectively specify a particular subscription; and

    associating a Boolean-valued predicate with at least one of the sub-expressions for the particular subscription, wherein the Boolean valued predicate provides an indication of a notification element for the particular subscription in order to provide content-based routing for the subscription.

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