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Proximity

Proximity is a “function” that determine whether or not a user is proximate. There are several predefined functions:

  • isNearby: physical proximity
  • isFriend: static encoding of friendship relationships
  • doesProfileMatch: tests an attribute of a user’s profile, form ATTR OP VAL, where ATTR is e.g. age, name, gender, hobbies,

Other functions can be defined as combinations of existing functions by means or combinators: and, or, not

As a first implementation of the RETE-network, maybe we can start from the oo matching that Tom implemented, so that Proximity functions are templates. For example:

def flockrTemplate := template: {
  def name := *; // wildcard, can be anything
  def age := constraint: { _ < 25 }; // must be younger than 25
  def address := template: {
    def street := *; //any street,but street name must be filled
    def city := "Brussel"; // city must equal this string
  };
  def greet(); // person must have a greet method
} taggedAs: [ Flockr ]; // object must be tagged as a Flockr
uf/proximities.1220539279.txt.gz · Last modified: 2008/09/04 16:46 by elisag
 
 
 
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