4

I'm using Seam Framework. I have 2 Entity:

Request.java

@Entity
@Table(name = "SRV_REQUEST")
public class Request {

private Long id;

@Id 
@Column(name = "ID_")
public Long getId() {
   return id;
}

and 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;
}

When I do this transaction:

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);

I got this error:

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
Eazy
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  • I guess adding entityManager.flush() after entityManager.persist(request) is not an option – Eazy Jan 14 '13 at 12:12

2 Answers2

1

try this

    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);
Didar Burmaganov
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Nurlan
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0

try to add {CascadeType.PERSIST, CascadeType.MERGE} on getRequest method

Lang
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  • After adding this I got this error: ERROR: duplicate key value violates unique constraint "srv_request_pkey" Detail: Key (id_)=(2000703891) already exists. However in the database there is no such request entry. – Eazy Jan 14 '13 at 12:25
  • I guess if you wanna set Id manually you need flush(Save your entity before assign it) – Lang Jan 14 '13 at 12:27
  • Use entityManager.flush(). – Lang Jan 14 '13 at 12:50
  • add {CascadeType.PERSIST, CascadeType.MERGE} and remove first persist – Lang Jan 14 '13 at 14:33