Hibernate exception after adding orphanRemoval attribute

Question

So after adding orphanRemoval = true to @OneToMany relationship in one of my entities, I get the following exception when trying to save a new or delete an existing entity which references the one with orphanRemoval = true attribute.

The exception I get is:

A collection with cascade="all-delete-orphan" was no longer referenced by the owning entity instance: fully.qualified.path.to.the.property.with.orphanRemoval.setToTrue

One to many relationship is specified like this:

  @OneToMany(
  targetEntity = MyEntity.class,
  fetch = FetchType.LAZY,
  mappedBy = "mappingField_",
  orphanRemoval = true,
  cascade = CascadeType.ALL)
  private List<MyEntity> myEntities_= new ArrayList<>();

I get exception when I try to save and flush the entity:

myEntityRepository_.saveAndFlushAndRefresh(myEntityInstance);

I couldn't find lot of information about this.

Have you checked [this answer](https://stackoverflow.com/questions/5587482/hibernate-a-collection-with-cascade-all-delete-orphan-was-no-longer-referenc)? Main points: do not set list `myEnitities_` via setter, change it by using add/remove methods, and make sure that your equals/hashCode() methods are implemented correctly (hashCode may change if some of the fields changes) — Nowhere Man, Apr 27 '20 at 21:03
@AlexRudenko Thanks for the help, but that wasn't the main cause. — whatamidoingwithmylife, Apr 28 '20 at 08:32

score 1 · Accepted Answer · answered Apr 28 '20 at 08:31

I fixed the issue, the cause was that I created new child entities and referenced parent entity in them, and right after that I would set the children of the parent entity using setter, which would cause previously persisted children entities to be dereferenced and cause the mentioned exception.

Hibernate exception after adding orphanRemoval attribute

1 Answers1