I work with jpa hibernate I try to develop three class :
but I have error related to type of fetch EAGER
@Entity
public class Request implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer requestId;
private String detailRequest;
private String place;
@ManyToMany(mappedBy="requests",fetch=FetchType.EAGER)
private List<Expertise> expertises;
...
//getter , setter and constructor
}
the Expertise .java
@Entity
public class Expertise implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private int idExpertise;
private String seniority;
@ManyToMany(mappedBy="expertises",fetch=FetchType.EAGER)
private List<TechnicalSkill> technicalSkills=new ArrayList<TechnicalSkill>();
@ManyToMany
private List<Request> requests=new ArrayList<Request>();
....
//getter , setter and constructor
}
the TechnicalSkill.java
@Entity
public class TechnicalSkill implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private int idTechnicalSkill;
private String description;
@ManyToMany
private List<Expertise> expertises=new ArrayList<Expertise>();
...
//getter , setter and constructor
}
but when I run this class in jboss this error is diplayed
Caused by: org.hibernate.HibernateException: cannot simultaneously fetch multiple bags
