我正在使用 Seam 框架。我有 2 个实体:
请求.java
@Entity
@Table(name = "SRV_REQUEST")
public class Request {
private Long id;
@Id
@Column(name = "ID_")
public Long getId() {
return id;
}
和 RequestEvent.java
@Entity
@Table(name = "SRV_REQUEST_EVENT")
public class RequestEvent {
private Long id;
private Request request;
@Id
@GeneratedValue
@Column(name = "ID_")
public Long getId() {
return id;
}
@ManyToOne
public Request getRequest() {
return request;
}
当我做这个交易时:
Request request = new Request();
// I have to set ID manually
request.setId(12345);
entityManager.persist(request);
RequestEvent event = new RequestEvent();
event.setRequest(request);
entityManager.persist(event);
我收到此错误:
object references an unsaved transient instance - save the transient instance before flushing: kz.gov.mci.ipsc.services.RequestEvent.request -> kz.gov.mci.ipsc.services.Request
最佳答案
尝试这个
Request request = new Request();
// I have to set ID manually
request.setId(12345);
entityManager.persist(request);
entityManager.flush();//this point is important
RequestEvent event = new RequestEvent();
event.setRequest(request);
entityManager.persist(event);
关于hibernate - 对象引用未保存的 transient 实例 - 在刷新 Hibernate 之前保存 transient 实例,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14318125/