When I get a JobPosting entity returned, the user, province, country and employmentType fields, fields that are mapped with @OneToOne and are unidirectional, are populated with their id field but no other fields are populated, respectively. For example, the employmentType field is of type EmploymentType and has two fields; an id and type field. But the id field is only populated. I am using Hibernate core 3.3.2 GA, Hibernate Annotations and Entity Manager 3.4.0 GA, Struts 2.1.8 and Spring 2.5.6. How do I solve this problem?

package model;

import java.io.Serializable;
import java.util.Date;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToOne;

import org.hibernate.annotations.Fetch;
import org.hibernate.annotations.FetchMode;

@Entity
@NamedQueries({
@NamedQuery( name="findJobPostingsByUser", query="select jp from JobPosting jp where jp.user = :user" ),
@NamedQuery( name="findJobPostingById", query="select jp from JobPosting jp where jp.id = :id" )
})
public class JobPosting implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue( strategy = GenerationType.AUTO )
private Long id;
@OneToOne( fetch=FetchType.LAZY )
@JoinColumn( name="user_id" )
private User user;
@Column( nullable=false, length=128 )
private String company;
@Column( nullable=false )
private String jobTitle;
@Column( nullable=false, length=8192 )
private String description;
@Column( nullable=false )
private String city;
@OneToOne( fetch=FetchType.LAZY )
@JoinColumn
private Province province;
@OneToOne( fetch=FetchType.LAZY )
@JoinColumn
private Country country;
private String payRate;
@Column( nullable=false, length=2056 )
private String applyTo;
@OneToOne( fetch = FetchType.LAZY )
@JoinColumn( nullable=false )
private EmploymentType employmentType;
private Date createdAt;
private Boolean active = true;

public Long getId() { return id; }
public void setId(Long id) {
this.id = id;
}

@Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}

@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if( !( object instanceof JobPosting )) {
return false;
}
JobPosting other = ( JobPosting )object;
if(( this.id == null && other.id != null ) || ( this.id != null && !this.id.equals( other.id ))) {
return false;
}
return true;
}

@Override
public String toString() {
return "entity.JobPosting[id=" + id + "]";
}

public User getUser() { return user; }
public void setUser( User user ) {
this.user = user;
}

public String getJobTitle() { return jobTitle; }
public void setJobTitle( String jobTitle ) {
this.jobTitle = jobTitle;
}

public String getDescription() { return description; }
public void setDescription(String description) {
this.description = description;
}

public String getCity() { return city; }
public void setCity(String city) {
this.city = city;
}

public Province getProvince() { return province; }
public void setProvince( Province province ) {
this.province = province;
}

public Country getCountry() { return country; }
public void setCountry( Country country ) {
this.country = country;
}

public Date getCreatedAt() { return createdAt; }
public void setCreatedAt( Date createdAt ) {
this.createdAt = createdAt;
}

public String getCompany() { return company; }
public void setCompany( String company ) {
this.company = company;
}

public String getApplyTo() { return applyTo; }
public void setApplyTo( String applyTo ) {
this.applyTo = applyTo;
}

public String getPayRate() { return payRate; }
public void setPayRate( String payRate ) {
this.payRate = payRate;
}

public EmploymentType getEmploymentType() { return employmentType; }
public void setEmploymentType( EmploymentType employmentType ) {
this.employmentType = employmentType;
}

public Boolean isActive() { return active; }
public void setActive( Boolean active ) {
this.active = active;
}
}

package model;

import java.io.Serializable;
import java.lang.Integer;
import java.lang.String;
import javax.persistence.*;

@Entity
@NamedQueries({
@NamedQuery( name="findAllEmploymentTypes", query="select et from EmploymentType et" )
})
public class EmploymentType implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String employmentType;
private static final long serialVersionUID = 1L;

public EmploymentType() {
super();
}
public Integer getId() {
return this.id;
}

public void setId(Integer id) {
this.id = id;
}
public String getEmploymentType() {
return this.employmentType;
}

public void setEmploymentType(String employmentType) {
this.employmentType = employmentType;
}
}