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私は2つのエンティティを持っていAddressEntityますCompanyEntity.

住所エンティティ

@Entity
@Table(name = "address")
public class AddressEntity implements Serializable {

    private static final long serialVersionUID = 6149442393833549397L;

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;

    @Column(name = "city", nullable = false)
    private String city;

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

    @Column(name = "street", nullable = false)
    private String street;

    @Column(name = "building_nr", nullable = false)
    private Integer buildingNr;

    @Column(name = "flat_nr")
    private Integer flatNr;

    // setters and getters
}

会社の実体

@Entity
@Table(name = "company")
public class CompanyEntity implements Serializable {

    private static final long serialVersionUID = 3635072833730133590L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id")
    private Integer id;

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

    @OneToOne
    @Cascade(CascadeType.ALL)
    private AddressEntity address = new AddressEntity();

    @OneToMany(mappedBy = "company")
    @Cascade(CascadeType.ALL)
    private Set<DescriptionEntity> descriptions = new HashSet<DescriptionEntity>();

    @OneToMany(mappedBy = "company")
    @Cascade(CascadeType.ALL)
    private List<EmployeeEntity> employees = new ArrayList<EmployeeEntity>();

}

select all addresses which are used by companiesこのSQLクエリで好きになりたいのですSELECT a.city, c.name FROM address a INNER JOIN company c ON c.address_id=a.id;が、HQLクエリを使用します(WHEREではなくJOINを使用したい)。どうすればいいですか?会社テーブルではなく、住所テーブルを使用して住所を選択したい。select c.address.city, c.name from CompanyEntity cこのような会社のテーブルを使用するか、 WHERE を使用してアドレスを選択できることを知っていますselect a.city, c.name from CompanyEntity c, AddressEntity a WHERE c.address.id=a.id

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