How to make native query for nested projection in Spring Data JPA - spring-data-jpa

Question

I need to write a native query for my projection with nested interfaces.
My TransactionView interface:
public interface TransactionView {
Long getId();
TransactionType getType();
LocalDate getDate();
AccountProjection getAcc1();
AccountProjection getAcc2();
interface AccountProjection {
String getName();
CurrencyName getCurrencyCode();
BigDecimal getBalance();
}
BigDecimal getAmount();
PartnerView getPartner();
interface PartnerView {
String getName();
}
String getComment();
CategoryView getCategory();
interface CategoryView {
String getName();
}
}
JpaRepository:
public interface TransactionsRepository extends JpaRepository<Transaction, Long> {
List<TransactionView> findByAcc1PersonIdOrderByDateDesc(int personId);
}
This approach works good and I get JSON like this:
[{
"id":34,
"type":"TRANSFER",
"comment":"test comment",
"date":"2022-12-23",
"amount":200.00,
"acc2":
{
"name":"cash",
"currencyCode":"USD",
"balance":200.00
},
"acc1":
{
"name":"test acc",
"currencyCode":"USD",
"balance":700.00
},
"partner":null,
"category":null
},
{
"id":20,
"type":"EXPENCE",
"comment":"",
"date":"2022-12-13",
"amount":33.07,
"acc2":null,
"acc1":
{
"name":"cash",
"currencyCode":"BYN",
"balance":322.33
},
"partner":
{
"name":"bmw"
},
"category":
{
"name":"auto"
}
}]
But Hibernate generates a very complex query with a lot of extra columns fetching.
My native query returns null nested objects:
#Query(value = "SELECT t.id AS id, " +
"t.transaction_type AS type, " +
"t.transaction_date AS date, " +
"t.amount AS amount, " +
"t.comment AS comment, " +
"a1.balance AS acc1Balance, " +
"a1.currency_code AS acc1CurrencyCode, " +
"a1.name AS acc1Name, " +
"a2.balance AS acc2Balance, " +
"a2.currency_code AS acc2CurrencyCode, " +
"a2.name AS acc2Name, " +
"par.name AS partnerName, " +
"cat.name AS categoryName, " +
"cat.category_type AS categoryType " +
"FROM transaction t " +
"LEFT OUTER JOIN account a1 ON t.acc1_id=a1.id " +
"LEFT OUTER JOIN person per ON a1.person_id=per.id " +
"LEFT OUTER JOIN account a2 ON t.acc2_id=a2.id " +
"LEFT OUTER JOIN partner par ON t.partner_id=par.id " +
"LEFT OUTER JOIN category cat ON t.category_id=cat.id " +
"WHERE per.id=?1 ORDER BY t.transaction_date DESC", nativeQuery = true)
List<TransactionView> findByAcc1PersonIdOrderByDateDescTest(int personId);
[{
"id":34,
"type":"TRANSFER",
"comment":"test comment",
"date":"2022-12-23",
"amount":200.00,
"acc2":null,
"acc1":null,
"partner":null,
"category":null
},
{
"id":20,
"type":"EXPENCE",
"comment":"",
"date":"2022-12-13",
"amount":33.07,
"acc2":null,
"acc1":null,
"partner":null,
"category":null
}]
Also I tried approach from Peter Gyschuk, but it doesn't work.
How can I solve it using native query?