Question

我有一个用弹簧启动写的应用程序，在Postgres上有3个表T1，T2和T3

t1 one2many映射与t2和t2 one2many与t3

如何将这些表合并为一个？模型和存储库是否保持不变？

T1的模型

tension: 0

T2的模型

@Entity
@Table(name = "maintenance_type")
@EntityListeners(AuditingEntityListener.class)
@JsonIgnoreProperties(value = { "createdAt", "updatedAt" }, allowGetters = true)
public class MaintenanceType implements Serializable {

private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;

@NotBlank
@Column(unique=true)
private String changeType;

@Column(nullable = false, updatable = false)
@Temporal(TemporalType.TIMESTAMP)
@CreatedDate
private Date createdAt;

@Column(nullable = false)
@Temporal(TemporalType.TIMESTAMP)
@LastModifiedDate
private Date updatedAt;

@OneToMany(mappedBy = "maintenanceType", cascade = CascadeType.ALL)
private Set<TierTwoQuestion> tierTwoQuestion;

public MaintenanceType() {
}


public MaintenanceType(Long id, String changeType) {
    super();
    this.id = id;
    this.changeType = changeType;
}


public MaintenanceType(String changeType) {
    super();
    this.changeType = changeType;
}


public Set<TierTwoQuestion> getTierTwoQuestion() {
    return tierTwoQuestion;
}

//
public void setTierTwoQuestion(Set<TierTwoQuestion> tierTwoQuestion) {
    this.tierTwoQuestion = tierTwoQuestion;
}

public Long getId() {
    return id;
}

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

public String getChangeType() {
    return changeType;
}

public void setChangeType(String changeType) {
    this.changeType = changeType;
}

public Date getCreatedAt() {
    return createdAt;
}

public void setCreatedAt(Date createdAt) {
    this.createdAt = createdAt;
}

public Date getUpdatedAt() {
    return updatedAt;
}

public void setUpdatedAt(Date updatedAt) {
    this.updatedAt = updatedAt;
}
}

我尝试在一个表中添加重新创建所有T1 T2 T3但未按预期工作的模型

将3个表合并为1个SpringBoot + Postgres

0 个答案: