If you are using Spring-Data Mongodb You can do this in this way:
String tagName = "m";
Query query = new Query();
query.limit(10);
query.addCriteria(Criteria.where("tagName").regex(tagName));
If you are using Spring-Data Mongodb You can do this in this way:
String tagName = "m";
Query query = new Query();
query.limit(10);
query.addCriteria(Criteria.where("tagName").regex(tagName));