Hibernate: Select entities where collection contains all of the specified valus

Question

I need assistance with a tricky hibernate query problem. I have the following entities:

public class Book {
   private String bookId;
   private String autho         


        

Answer 1

You could use the following query:

select book from Book book
where :numberOfTags = (select count(tag.id) from Book book2
                       inner join book2.tags tag
                       where book2.id = book.id
                       and tag in (:tags))

where numberOfTags is the number of tags in the set of tags that must be matched.