MultipleBagFetchException « Annotation « JPA Q&A

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  2. Annotation
  3. MultipleBagFetchException




1. How to prevent having org.hibernate.loader.MultipleBagFetchException    stackoverflow.com

I get the following exception:

org.hibernate.loader.MultipleBagFetchException: cannot simultaneously fetch multiple bags
the bean I use is: 
@Entity
@Table(name="user") public class User implements Serializable { 
/**
 * 
 */
private static final long serialVersionUID = -5689970869179555442L;

@Id
@Column(name="username")
/*@NotNull*/
private String ...