db.BLOOD_PRESSURE.insert({_id:1, foi_geom:[10,10]})
db.BLOOD_PRESSURE.insert({_id:2, foi_geom:[20,20]})
db.BLOOD_PRESSURE.insert({_id:3, foi_geom:[30,30]})
db.BLOOD_PRESSURE.ensureIndex({foi_geom:"2d"})

public static void test8() throws UnknownHostException, MongoException {
    Mongo mongo = new Mongo();
    DB db = mongo.getDB("test");
    DBCollection coll = db.getCollection("BLOOD_PRESSURE");
    new QueryBuilder();
    DBCursor cur = coll.find(QueryBuilder.start("foi_geom").withinBox(8.1,9.5,55.1,54.5).get());
    while(cur.hasNext())
        System.out.println(cur.next());

}