Query in Spring Boot JPA - @OneToMany List relation

Question

I've got entity like this:

@Entity
@Table(name = "formula")
 public class Formula {

@Id
@GeneratedValue(strategy = GenerationType.TABLE)
@Column(name = "formula_id")
private Long formulaId;

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

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

@Column(name = "time")
private int time;

@OneToMany(mappedBy = "formula",cascade = CascadeType.ALL, fetch = FetchType.LAZY)
private List<Product> productList = new ArrayList<>();

And another Entity:

@Entity
@Table(name = "products")
public class Product {

@Id
@GeneratedValue(strategy = GenerationType.TABLE)
private Long productId;

@Column(name = "product_name")
private String productName;

@Column(name = "amount")
private Double amount;

@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = "formula_id")
private Formula formula;

I want to ask Query to DB which help me get every type of data (by key word). I've got all except List of <Product> . It look like this:

public interface FormulaRepository extends JpaRepository<Formula, Long> {

@Query("SELECT f FROM Formula f WHERE " + "CONCAT(f.name, f.description, 
f.time)" + "LIKE %?1%")
List<Formula> findFormulaBy(String word);

How can add productList to Query and acomplished my searching? Is there any possibility to do this in findFormulaBy(String word); method?

Answer 1

Change query to include LEFT JOIN FETCH to eagerly fetch productList. Also include DISTINCT to prevent duplicate Formula objects in List

    @Query("SELECT DISTINCT f FROM Formula f " +
            "LEFT JOIN FETCH f.productList " +
            "WHERE " + "CONCAT(f.name, f.description,f.time)" + "LIKE %?1%")
    List<Formula> findFormulaBy(String word);