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EclipseLink seems to ignore columnDefinition and nullable [message #1152367]

Wed, 23 October 2013 20:43

Eclipse User

EclipseLink 2.5 seems to be ignoring columnDefinition and nullable when generating DDL to a PostgreSQL database.

My code:

User.java

public class User implements Serializable {
  @Id
  @Column(name = "id", columnDefinition = "bigserial")
  private Long id = null;
}

UserProfile.java

public class UserProfile implements Serializable {
  @OneToOne
  @JoinColumn(name = "invited_by", columnDefinition = "bigint", nullable = true)
  private User invitedBy = null;
}

UserProfile should be created with the field invited_by such as invited_by bigint but instead it is generating

invited_by bigserial not null

Is this a bug or am I doing it wrong? The same code works with Hibernate.

Thanks

Re: EclipseLink seems to ignore columnDefinition and nullable [message #1154994 is a reply to message #1152367]

Fri, 25 October 2013 12:09

Eclipse User

EclipseLink uses the columnDefinition as is to override any settings, so that explains why the nullable would be ignored - similar to https://bugs.eclipse.org/bugs/show_bug.cgi?id=279503

I could not find a bug filed for EclipseLink using the referenced field's columnDefinition, so you may want to file one if it is still not fixed in the 2.5.1 or 2.6 releases. A workaround would be to use a descriptor customizer to manually define the DatabaseField object used in the invitedBy OneToOneMapping.

Re: EclipseLink seems to ignore columnDefinition and nullable [message #1155000 is a reply to message #1154994]

Fri, 25 October 2013 12:12

Eclipse User

Another workaround is to avoid using the columnDefinition as described in this answer:
http://stackoverflow.com/questions/9284564/eclipselink-postgresql-doesnt-use-bigserial-to-long-id

Re: EclipseLink seems to ignore columnDefinition and nullable [message #1155137 is a reply to message #1152367]

Fri, 25 October 2013 14:18

Eclipse User

Thanks for the replies. I've seen both the stackoverflow link and the mentioned bug report. I really wanted to use serial types because the database is going to be used by more applications. This bug made me rethink my approach and I decided to code the database first (as it is the core component of the system) and let eclipselink generate entities from it. So far I am happy with this approach.

I do believe it is a bug though. It generates serial columns to foreign keys, which can never be, and doesn't allow to override. However as I changed my code and won't be able to keep an eye on it I'm not sure if I should start a bug report which I won't be following.

Thanks

[Updated on: Fri, 25 October 2013 14:19] by Moderator

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