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我在模型中使用了@JoinTable 并创建了表并保存了数据。

现在我想从那个子表中获取数据..我怎样才能通过 JPA Query 获取它..

我的代码是，

@Entity

public class Student {

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

@LazyCollection(LazyCollectionOption.FALSE)
@OneToOne(optional = false)
private User user;

@Column
private Integer handicap;

@OneToOne(targetEntity=StudentPro.class, cascade=CascadeType.ALL, 
mappedBy="student", fetch = FetchType.LAZY, orphanRemoval = true)
@LazyCollection(LazyCollectionOption.FALSE)
private StudentPro studentPro;

@LazyCollection(LazyCollectionOption.FALSE)
@ManyToMany(cascade = CascadeType.ALL)
@JoinTable(
        name = "student_favourite_pro",
        joinColumns = {@JoinColumn(name = "student_id")},
        inverseJoinColumns = {@JoinColumn(name = "pro_id")}
)
private List<Pro> favouritePros = new ArrayList<Pro>();

.

public StudentPro getStudentPro() {
    return this.studentPro;}

public void setStudentPro(StudentPro studentPro) {
    this.studentPro = studentPro;}

public Integer getId() {
    return id;}

public void setId(Integer id) {
    this.id = id;}

public User getUser() {
    return user;}

public void setUser(User user) {
    this.user = user;}

public Integer getHandicap() {
    return handicap;}

public void setHandicap(Integer handicap) {
    this.handicap = handicap;}

@Override
public String toString() {
    return ToStringBuilder.reflectionToString(this);}

public void addFavouritePro(Pro pro) {
    favouritePros.add(pro);}

public List<Pro> getFavouritePros() {
    return favouritePros;}}

我想从 student_favourite_pro 表中获取数据。我该怎么做？

提前致谢

拉克希米·普里亚

4

0 回答 0