Question

Customer Entity (Parent Entity)

@Entity
public class Customer {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;

private String name;

@OneToMany(mappedBy="customer", cascade=CascadeType.ALL)
private List<Facility> facilities;

//Setter and Getter for name and facilities

public void addFacility(Facility facility){
    if(this.facilities == null){
        this.facilities = new ArrayList<Facility>();
    }
    this.facilities.add(facility);
    facility.setCustomer(this);
}
}

Facility Entity (Child Entity)

@Entity
public class Facility {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;

@ManyToOne
@JoinColumn(name="CUSTOMER_FK")
private Customer customer;

private String name;

//Setter and Getter, equals and hashcode
...
}

in Customer entity, I use CascadeType.ALL, however when I remove a customer, the associated facilities are still there. I delete customer by

Query query = em.createNamedQuery("Customer.delete");
query.setParameter("id", customerId);
query.executeUpdate();

where

@NamedQuery(name="Customer.delete", query="delete from Customer c where c.id = :id")

Answer 1

Bulk delete operations are not cascaded, per JPA specification:

4.10 Bulk Update and Delete Operations

…

A delete operation only applies to
entities of the specified class and
its subclasses. It does not cascade to
related entities.

…

If you want to benefit from cascading, load the entity and then call EntityManager#remove(Object) on it.