MongoDB Upsert with increment

mongodb_upsert

final BasicDBObject query = new BasicDBObject();
List<BasicDBObject> obj = new ArrayList<BasicDBObject>();
obj.add(new BasicDBObject("name", person.getName()));
obj.add(new BasicDBObject("age", person.getAge()));
query.put("$and", obj);

BasicDBObject increment = new BasicDBObject();
increment.put("$inc", new BasicDBObject().append("quantity", 1));
increment.put("$set", new BasicDBObject("person", person));

conversionCollection.update(query, increment, true /*upsert*/ , false);