Referential integrity constraint violation with Cascade type ALL - spring

Question

I need your help with the following problem: there is a spring boot project, it has two entities:
Bank and CreditDetails, the bank refers to the details as OneToMany, the details as ManyToOne.
In the Bank entity, the cascade type is ALL, but when I try to delete the bank, I get an error, what could be the problem?
Bank:
#Entity
#Table(name = "banks")
#Getter
#Setter
#NoArgsConstructor
public class Bank {
#Id
#Column(name = "bank_id")
#GeneratedValue(strategy = GenerationType.AUTO)
private UUID id;
#OneToMany(orphanRemoval = true,cascade = CascadeType.ALL,
mappedBy = "bank", fetch = FetchType.LAZY)
private List<CreditDetails> creditDetails = new ArrayList<>();
#OneToMany(orphanRemoval = true,cascade = CascadeType.ALL,
mappedBy = "bank", fetch = FetchType.LAZY)
private List<Client> clients = new ArrayList<>();
}
Credit Details:
#Entity
#Table(name = "credit_details")
#Getter
#Setter
#NoArgsConstructor
public class CreditDetails {
#Id
#Column(name = "credit_details_id")
#GeneratedValue(strategy = GenerationType.AUTO)
private UUID id;
#Column(name = "credit_limit")
private BigDecimal creditLimit;
#Column(name = "credit_percent")
private BigDecimal creditPercent;
#ManyToOne(targetEntity = Bank.class, cascade = {CascadeType.DETACH, CascadeType.MERGE, CascadeType.PERSIST, CascadeType.REFRESH}, fetch = FetchType.EAGER)
#JoinColumn(name = "bank_id")
private Bank bank;
#OneToMany(cascade = CascadeType.ALL,
mappedBy = "creditDetails")
List<CreditOffer> creditOffers;
}
Entities in DB(H2)
create table banks
(
bank_id uuid primary key
);
create table credit_details
(
credit_details_id uuid primary key,
credit_limit bigint,
credit_percent numeric(5, 2),
bank_id uuid references banks (bank_id),
primary key (credit_details_id)
);
Stacktrace:
Referential integrity constraint violation: "CONSTRAINT_8: PUBLIC.CREDIT_DETAILS FOREIGN KEY(BANK_ID) REFERENCES PUBLIC.BANKS(BANK_ID) ('ae1ce5c1-b1eb-4ee7-a1a2-63d831b0fd0a')";

Answer 1

I reconstructed your setup using spring, hibernate, an H2 database and a Postgres database. For me everything worked as intended.
To test the entities I used a BankRepository:
public interface BankRepository extends CrudRepository<Bank, UUID> {}
and a very simple RestController:
private final BankRepository bankRepository;
#DeleteMapping
public void removeBank(#RequestParam String uuid) {
bankRepository.deleteById(UUID.fromString(uuid));
}
#PostMapping("/add")
public Bank addBank() {
var bank = new Bank();
var creditDetails = new CreditDetails();
creditDetails.setBank(bank);
bank.setCreditDetails(List.of(creditDetails));
bankRepository.save(bank);
return bank;
}
You might geht the error if you try to delete the Bank entity via some SQL directly or if you manually delete it from your database. Could you set
spring.jpa.show-sql: true
and post the generated JPA Queries? Mine looked like this:
Hibernate: select bank0_.bank_id as bank_id1_1_0_ from banks bank0_ where bank0_.bank_id=?
Hibernate: select creditdeta0_.bank_id as bank_id4_2_0_, creditdeta0_.credit_details_id as credit_d1_2_0_, creditdeta0_.credit_details_id as credit_d1_2_1_, creditdeta0_.bank_id as bank_id4_2_1_, creditdeta0_.credit_limit as credit_l2_2_1_, creditdeta0_.credit_percent as credit_p3_2_1_ from credit_details creditdeta0_ where creditdeta0_.bank_id=?
Hibernate: delete from credit_details where credit_details_id=?
Hibernate: delete from banks where bank_id=?