Hibernate query language example

Hibernate Query Language Example
http://examples.javacodegeeks.com/enterprise-java/hibernate/hibernate-query-language-example/

https://stackoverflow.com/questions/8977121/advantages-of-using-hibernate-callback

https://stackoverflow.com/questions/496070/should-i-use-top1-in-a-subquery

https://docs.jboss.org/hibernate/orm/4.2/manual/en-US/html_single/#queryhql-expressions

https://stackoverflow.com/questions/4497624/hql-query-for-entity-with-max-value

https://www.laliluna.de/jpa-hibernate-guide/ch11s02.html