a unidirectonal one-to many example,anyone can help me?

[killme2008]

I wrote a example following the <mastringEJB4th>.

1.First,a company.java file:
@Entity
public class Company implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;

private String name;

private Set employees;

public Company() {
}

@OneToMany(cascade = CascadeType.PERSIST, fetch=FetchType.EAGER,mappedBy="company")
public Set getEmployees() {
return employees;
}

public void setEmployees(Set employees) {
this.employees = employees;
}

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

}


2.And then ,Employee.java:
@Entity()
public class Employee implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;

private String name;

private char sex;

public Employee() {
}

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public char getSex() {
return sex;
}

public void setSex(char sex) {
this.sex = sex;
}

}


3.I wrote a SLSB to test the example:
......
Company company = new Company();
Set employees = new HashSet();
Employee employee = new Employee();
employee.setName("jordan");
employee.setSex('M');
employees.add(employee);
employee = new Employee();
employee.setName("dennis");
employee.setSex('M');
employees.add(employee);
employee = new Employee();
employee.setName("catty");
employee.setSex('F');
employees.add(employee);
employee = new Employee();
employee.setName("inter");
employee.setSex('F');
employees.add(employee);
employee = new Employee();
employee.setName("James Gosling");
employee.setSex('M');
employees.add(employee);
company.setEmployees(employees);
em.persist(company);
}

public List getCompanies() {
Query query = em.createQuery("SELECT c FROM Company c");
return query.getResultList();
}
..........
but when I tried to deploy the example to the JBoss Server,it goes wrong:
Could not determine type for: java.util.Set, for columns: [org.hibernate.mapping.Column(employees)]

I don't know why!!!Is my code have any problems?anyone can help me?thanks.

[fhh]

Have you tried

private Set<Employee> employees;

@OneToMany(cascade = CascadeType.PERSIST, fetch=FetchType.EAGER,mappedBy="company")
public Set<Employee> getEmployees() {
return employees;
}

?

Regards

fhh

[killme2008]

I reinstall the jboss server,it works...I dont' know why it goes wrong before that.Thanks ,fhh