JPQL 返回所有關聯的實體

Question

我正在嘗試獲取 Order[] 數組，其中包含未收到相關文檔的所有訂單。

我試過這個查詢，它返回正確的行數。

 @Query("Select o FROM Order o INNER JOIN o.properties p  INNER JOIN p.documents  d WHERE d.received = false")
    Order[] findUnreceivedOrders();

問題是，我的數組中的訂單對象不僅包括未接收的所有文檔，而且我希望該對象僅包括未接收的文檔對象。

有誰知道如何解決這個問題？

感謝幫助！

訂單.java

@Entity
@Table(name = "orders")
@JsonIgnoreProperties(ignoreUnknown = true,
        value = {"progress"})
public class Order {

    @Id
    @Column(name = "id", unique = true)
    private String orderid;
    @Column(name = "user_id")
    private String userid;
    @Column(name = "entrydate")
    private java.sql.Date entrydate;
    @Column(name = "info")
    private String info;
    @Column
    private boolean complete;
    @Column(name= "cached")
    private boolean cached;
    @OneToMany(cascade = CascadeType.ALL, mappedBy = "order")
    private List<Property> properties = new ArrayList<>();

    @OneToOne(mappedBy = "order", cascade =  CascadeType.ALL)
    private BillingAdress billingAdress;

    // Getter & Setter

屬性.java

@Entity
@Table(name = "properties")
@JsonIgnoreProperties(ignoreUnknown = true,
        value = {"progress"})
public class Property
{
    @Id
    @Column(name = "propertyid", unique = true )
    private String id;
    @Column(name = "name")
    private String name;
    @Column(name = "street")
    private String street;
    @Column(name = "zip")
    private String zip;
    @Column(name = "town")
    private String town;
    @Column
    private String house_number;


    @OneToMany(cascade = CascadeType.ALL, mappedBy = "property")
    private List<Landregisterfolio> landregisterfolios = new ArrayList<>();

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

    @OneToMany(cascade = CascadeType.ALL, mappedBy = "property")
    private List<Document> documents = new ArrayList<>();

    @ManyToOne
    @JoinColumn(name = "order_id")
    @JsonIgnore
    private Order order;

    @Column(name = "order_id", insertable = false, updatable = false)
    private String orderid;

//Getter & Setter
}

文檔.java

@Entity
@Table(name = "documents")
public class Document {

    @Id
    @Column(name="id")
    private String docid;
    @Column(name="name")
    private String docname;
    @Column(name = "received")
    private Boolean received;
    @Column(name = "requested")
    private Boolean requested;
    @Column(name ="last_contact")
    private Date lastContact;
    @Column(name ="intern_comment")
    private String intern_comment;
    @Column(name ="extern_comment")
    private String extern_comment;
    @Column(name="fees")
    private double fees;

    @ManyToOne
    @JoinColumn(name = "property_propertyid")
    @JsonIgnore
    private Property property;

    @Column(name = "property_propertyid", insertable = false, updatable = false)
    private String propertyid;

//Getter & Setter

}

Answer 1

可能您可以將@ManyToOne Order映射到您的Document實體，並在用於Order實體之后

@JoinColumnOrFormula(formula = @JoinFormula("(select d.id from documents d WHERE d.order_id = id AND d.received = false"))
List<Document> unreceivedDocuments;

Answer 2

ü有列表Property在Order和名單Document中Property 。 因此，如果您有一份狀態未在您的列表中收到的Document ，您將收到此Order 。

Answer 3

感謝@pdem！

使用了“join fetch”，將我的列表更改為集合，並且工作正常。