conf.addProperty("select.color.val", "red,blue");
conf.addProperty("select.color.op", "or");
conf.addProperty("select.color.prop", "p1:p2");
conf.addProperty("select.city.val", "san jose");
conf.addProperty("select.city.op", "and");
conf.addProperty("select.city.prop", "p3:p5");
conf.addProperty("facet.color.minhit", "1");
conf.addProperty("facet.color.maxcount", "10");