test_exists.drl

来自「jboss规则引擎」· DRL 代码 · 共 15 行

package org.drools.examples;

import org.drools.Person;
import org.drools.Cheese;

global java.util.List list;

rule "Buy cheese"
when
  $cheese: Cheese($type : type);
  exists Person(likes == $type);
then
  list.add($cheese);
end