How to delete a child records in a One To Many association using Play Framework / Ebean

gistfile1.txt

This looks like bug / hack that's not very obvious. When you remove a childBean and save the parentBean using Ebean, it doesn't seem to delete the corresponding child record from the database.

For example:

   partentBean.childBeans.remove(aChildBean)
   Ebean.save(parentBean)

=> Expected to see aChildBean record deleted from DB, however the above doesn't delete it

Solution:

To make this work, Ebean seem to have a hack (not part of JPA) annotation that need to be specified to the association in the ParentBean as below

class ParentBean extnds Model {

  @Id
  public Long id;
  
  @PrivateOwned
  @OneToMany (cascade = CascadeType.ALL)
  public List<ChildBean> childBeans = new ArrayList<ChildBean>();
}

The annotation  @PrivateOwned (com.avaje.ebean.annotation.PrivateOwned) does the trick will force aChildBean record to be deleted in the above example.