dispatcher's Introduction
approach 1 ================= hash map approach conjunctions of disjunctions use a hashmap for predicates and events predicate : (c1 = "in") && (c2 = "news.php" || c2 = "home.php") && (c3 = "nytimes.com") hashmap representation c1 => [in] c2 => [news.php, home.php] c3 => [nytimes.com] event representation (5 fields) c1 => in c2 => home.php c3 => wsj.com c4 => wikipedia result : no match match in the predicate hashmap and find in the list approach 2 ============ can we representing the predicates as a grammar tree approach 3 ============ since predicates are strings thought of using javax.tools to convert them into java code and compile programtically and use the generated bytecode to match
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