Hibernate Cascade.All property doesn't add ON DELETE CASCADE on Postgres Foreign Key Constraint

Question

I am using SpringBoot + PostgreSQL + JPA Hibernate, everything seems to working fine however the Cascade.ALL property is not applied on the table user_roles. Am i missing anything important. I have tried ManytoMany relationship and ManytoOne but no luck yet.

The entity files I am using are as follows.

User.java

@Entity
@Table(name = "USERS")
@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
public class User {


  @Id
  @SequenceGenerator( name = "lineupSeq", sequenceName = "lineup_seq", allocationSize = 20, initialValue = 50 )
  @GeneratedValue( strategy = GenerationType.SEQUENCE, generator = "lineupSeq" )
  @Column(name="id")
  private Long id;

  @Column(unique=true)
  private String username;

  @Column
  @JsonIgnore
  private String password;

  @Column(name="prodcrud")
 private String prodcrud;

  @Column(name="devcrud")
  private String devcrud;

  @Column(name="testcrud")
  private String testcrud;



@ManyToOne(fetch = FetchType.EAGER, cascade=CascadeType.ALL)
@JoinTable(name = "user_roles", 
    joinColumns = {@JoinColumn(name = "user_id", referencedColumnName="id") },
    inverseJoinColumns = {@JoinColumn(name = "role_id", referencedColumnName="id") })
private Role role;

public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}

Screenshot of postgres constraint added Postgres constraint added

Answer 1

Yes, you simply expect this annotation to do something it doesn't do.

Cascade.ALL tells JPA that every operation (persist, merge, delete, etc.) done, at runtime, using JPA, on a User must also be applied on its role .

Note that it doesn't make sense: since it's a ManyToOne , trying to delete the role of a user when deleting the user will lead to broken foreign key constraints, since the same role is also referenced by other users.

Read the documentation. Don't guess what annotations do.