How-to articles, tricks, and solutions about ONE-TO-MANY
Hibernate throws MultipleBagFetchException - cannot simultaneously fetch multiple bags
If you are using Hibernate and you see the error "MultipleBagFetchException: cannot simultaneously fetch multiple bags", it means that you are trying to fetch multiple collections of an entity using a single Hibernate query.
What is the meaning of the CascadeType.ALL for a @ManyToOne JPA association
In a JPA entity relationship, the CascadeType.ALL annotation specifies that all operations (persist, merge, remove, refresh, and detach) that are performed on the parent entity should be cascaded to the child entity.