HQL query does not work properly

Question

I've some problems with an HQL query:

@Query("Select s from Sport s JOIN s.categories as c where s.sportId = :sportId and c.categoryId = :categoryId")
Iterable<Sport> findByCategoryIdAndSportId(@Param("sportId")Long sportId, @Param("categoryId")Long categoryId);

This query returns all categories (seems it ignore the second AND clause) but only the sport that matchs with sportId.

These are my classes that represents Sport and Category:

@Entity
@Table(name = "Sports")
public class Sport  implements Serializable
{
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long sportId;
    @OneToMany(mappedBy = "sportId")
    @ApiModelProperty(required = true)
    @JsonManagedReference
    private Set<Category> categories;

    @Column
    private String sportName;

    ....get and set

And

@Entity
@Table(name = "Categories")
public class Category implements Serializable
{
    @ManyToOne
    @JoinColumn(name = "sportId", nullable = false)
    @JsonBackReference
    private Sport sportId;

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

    ..get and set

EDIT

Suppose that:

Sport:
  |sportId | SportName  
  |1       |Rugby      
  |2       |Basket       
  |3       |Tennis 

And Categories:

  |categoryId | CategoryName | sportId|
  |1          |Italy         |1       |
  |2          |England       |2       | 
  |3          |USA           |1       |
  |1          |Spain         |2       |

I want to obtain with my query (suppose sportId=1 and categoryId=1):

| sportId | SportName | categoryId | CategoryName |
   1         Rugby       1             Italy

Someone can help me? Thanks in advance

Answer 1

That won't work. Look at this .

You can invert the query to get the categories that have some specific sport:

Select c from Categories c JOIN Sport s where c.categoryId = :categoryId and s.sportId = :sportId