Removing child from collection using JPA

Question

I\'m using JPA over Hibernate in my web-app. Here are two entities (only getters are shown):

class Child {
  private Parent parent;

  @ManyToOne(optional=false)         


        

Answer 1

For JPA 2.0 you can set orphanRemoval=true of the @OneToMany

For JPA 1.0, you should use hibernate-specific annotations. That is the @Cascade annotation (instead of the cascade attribute), with a value of

@Cascade({CascadeType.ALL, CascadeType.DELETE_ORPHAN})

Hibernate 3.5+ implement JPA 2.0