@ModelAttribute(value = "vacancy")
	public Vacancy loadVacancy(@RequestParam(required = false) Integer idVacancy) {
		if(idVacancy == null)
			return null;
		return vacancyService.findById(idVacancy);
	}

@Entity
@Table(name = "vacancy")
@XmlRootElement(name="vacancy")

public class Vacancy {

	private List<VacancyStatus> statusList = new LinkedList<VacancyStatus>();

	@OneToMany(mappedBy = "vacancy", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
	public List<VacancyStatus> getStatusList() {
		return statusList;
	}

	public void setStatusList(List<VacancyStatus> statusList) {
		this.statusList = statusList;
	}

}

@Entity
@Table(name = "status_for_vacancy")
public class StatusForVacancy extends AbstractStatus {

	public StatusForVacancy() {
		super();
	}

	public StatusForVacancy(Integer id, String name) {
		super(id, name);
	}

}

@MappedSuperclass
@XmlRootElement
public abstract class AbstractStatus {

	private Integer id;
	private String name;

	public AbstractStatus() {
		super();
	}
	
	public AbstractStatus(String name) {
		super();
		this.name = name;
	}

	public AbstractStatus(Integer id, String name) {
		super();
		this.id = id;
		this.name = name;
	}

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	@Column (name ="id")
	public Integer getId() {
		return id;
	}

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

	@Column(name = "name")
	@NotEmpty
	public String getName() {
		return name;
	}

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

}

@Entity
@Table(name = "vacancy_status")
public class VacancyStatus extends AbstractHistoryStatus {

	private Vacancy vacancy;
	private StatusForVacancy status;
	
	public VacancyStatus() {
		super();
	}

	public VacancyStatus(Integer id, User author, Date date, 
			Vacancy vacancy, StatusForVacancy status) {
		super(id, author, date);
		this.vacancy = vacancy;
		this.status = status;
	}


	@ManyToOne
	@JoinColumn(name = "vacancy_id")
	public Vacancy getVacancy() {
		return vacancy;
	}

	public void setVacancy(Vacancy vacancy) {
		this.vacancy = vacancy;
	}

	@ManyToOne
	@JoinColumn(name = "status_id")
	public StatusForVacancy getStatus() {
		return status;
	}

	public void setStatus(StatusForVacancy status) {
		this.status = status;
	}
}

@MappedSuperclass
public abstract class AbstractHistoryStatus {

	private Integer id;
	private User author;
	private Date date;


	public AbstractHistoryStatus() {
	}

	public AbstractHistoryStatus(Integer id, User author, Date date) {
		super();
		this.id = id;
		this.author = author;
		this.date = date;
	}

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	@Column(name = "id")
	public Integer getId() {
		return id;
	}

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

	@ManyToOne
	public User getAuthor() {
		return author;
	}

	public void setAuthor(User author) {
		this.author = author;
	}

	@Column(name="creation_date")
	public Date getDate() {
		return date;
	}

	public void setDate(Date date) {
		this.date = date;
	}

}

hibernate.hbm2ddl.auto=update

Hibernate: select vacancy0_.id as id1_12_15_, vacancy0_.author_id as author5_12_15_, vacancy0_.creation_date as creation2_12_15_, vacancy0_.description as descript3_12_15_, vacancy0_.name as name4_12_15_, user1_.id as id1_0_0_, user1_.name as name2_0_0_, user1_.surname as surname3_0_0_, user1_.login as login4_0_0_, user1_.password as password5_0_0_, candidates2_.vacancy_id as vacancy2_12_17_, candidate3_.id as candidat1_4_17_, candidate3_.id as id1_1_1_, candidate3_.name as name2_1_1_, candidate3_.surname as surname3_1_1_, candidate3_.author_id as author7_1_1_, candidate3_.creation_date as creation4_1_1_, candidate3_.phone as phone5_1_1_, candidate3_.cv_url as cv6_1_1_, user4_.id as id1_0_2_, user4_.name as name2_0_2_, user4_.surname as surname3_0_2_, user4_.login as login4_0_2_, user4_.password as password5_0_2_, comments5_.vacancy_id as vacancy6_12_18_, comments5_.id as id1_8_18_, comments5_.id as id1_8_3_, comments5_.author_id as author4_8_3_, comments5_.candidate_id as candidat5_8_3_, comments5_.creation_date as creation2_8_3_, comments5_.text as text3_8_3_, comments5_.vacancy_id as vacancy6_8_3_, user6_.id as id1_0_4_, user6_.name as name2_0_4_, user6_.surname as surname3_0_4_, user6_.login as login4_0_4_, user6_.password as password5_0_4_, candidate7_.id as id1_1_5_, candidate7_.name as name2_1_5_, candidate7_.surname as surname3_1_5_, candidate7_.author_id as author7_1_5_, candidate7_.creation_date as creation4_1_5_, candidate7_.phone as phone5_1_5_, candidate7_.cv_url as cv6_1_5_, events8_.vacancy_id as vacancy10_12_19_, events8_.id as id1_5_19_, events8_.id as id1_5_6_, events8_.author_id as author6_5_6_, events8_.candidate_id as candidat7_5_6_, events8_.creation_date as creation2_5_6_, events8_.description as descript3_5_6_, events8_.event_date as event4_5_6_, events8_.event_status_id as event8_5_6_, events8_.event_type_id as event9_5_6_, events8_.name as name5_5_6_, events8_.vacancy_id as vacancy10_5_6_, user9_.id as id1_0_7_, user9_.name as name2_0_7_, user9_.surname as surname3_0_7_, user9_.login as login4_0_7_, user9_.password as password5_0_7_, candidate10_.id as id1_1_8_, candidate10_.name as name2_1_8_, candidate10_.surname as surname3_1_8_, candidate10_.author_id as author7_1_8_, candidate10_.creation_date as creation4_1_8_, candidate10_.phone as phone5_1_8_, candidate10_.cv_url as cv6_1_8_, eventstatu11_.id as id1_6_9_, eventstatu11_.name as name2_6_9_, eventtype12_.id as id1_7_10_, eventtype12_.name as name2_7_10_, skills13_.vacancy_id as vacancy1_12_20_, skill14_.id as skill2_13_20_, skill14_.id as id1_9_11_, skill14_.name as name2_9_11_, statuslist15_.vacancy_id as vacancy5_12_21_, statuslist15_.id as id1_14_21_, statuslist15_.id as id1_14_12_, statuslist15_.author_id as author3_14_12_, statuslist15_.creation_date as creation2_14_12_, statuslist15_.status_for_vacancy_id as status4_14_12_, statuslist15_.vacancy_id as vacancy5_14_12_, user16_.id as id1_0_13_, user16_.name as name2_0_13_, user16_.surname as surname3_0_13_, user16_.login as login4_0_13_, user16_.password as password5_0_13_, statusforv17_.id as id1_11_14_, statusforv17_.name as name2_11_14_ from vacancy vacancy0_ left outer join author user1_ on vacancy0_.author_id=user1_.id left outer join candidate_vacancy candidates2_ on vacancy0_.id=candidates2_.vacancy_id left outer join candidate candidate3_ on candidates2_.candidate_id=candidate3_.id left outer join author user4_ on candidate3_.author_id=user4_.id left outer join note comments5_ on vacancy0_.id=comments5_.vacancy_id left outer join author user6_ on comments5_.author_id=user6_.id left outer join candidate candidate7_ on comments5_.candidate_id=candidate7_.id left outer join event events8_ on vacancy0_.id=events8_.vacancy_id left outer join author user9_ on events8_.author_id=user9_.id left outer join candidate candidate10_ on events8_.candidate_id=candidate10_.id left outer join event_status eventstatu11_ on events8_.event_status_id=eventstatu11_.id left outer join event_type eventtype12_ on events8_.event_type_id=eventtype12_.id left outer join vacancy_skill skills13_ on vacancy0_.id=skills13_.vacancy_id left outer join skill skill14_ on skills13_.skill_id=skill14_.id left outer join vacancy_status statuslist15_ on vacancy0_.id=statuslist15_.vacancy_id left outer join author user16_ on statuslist15_.author_id=user16_.id left outer join status_for_vacancy statusforv17_ on statuslist15_.status_for_vacancy_id=statusforv17_.id where vacancy0_.id=?
Hibernate: select vacancies0_.candidate_id as candidat1_1_2_, vacancies0_.vacancy_id as vacancy2_4_2_, vacancy1_.id as id1_12_0_, vacancy1_.author_id as author5_12_0_, vacancy1_.creation_date as creation2_12_0_, vacancy1_.description as descript3_12_0_, vacancy1_.name as name4_12_0_, user2_.id as id1_0_1_, user2_.name as name2_0_1_, user2_.surname as surname3_0_1_, user2_.login as login4_0_1_, user2_.password as password5_0_1_ from candidate_vacancy vacancies0_ inner join vacancy vacancy1_ on vacancies0_.vacancy_id=vacancy1_.id left outer join author user2_ on vacancy1_.author_id=user2_.id where vacancies0_.candidate_id=?
Hibernate: select statuslist0_.vacancy_id as vacancy5_12_3_, statuslist0_.id as id1_14_3_, statuslist0_.id as id1_14_2_, statuslist0_.author_id as author3_14_2_, statuslist0_.creation_date as creation2_14_2_, statuslist0_.status_for_vacancy_id as status4_14_2_, statuslist0_.vacancy_id as vacancy5_14_2_, user1_.id as id1_0_0_, user1_.name as name2_0_0_, user1_.surname as surname3_0_0_, user1_.login as login4_0_0_, user1_.password as password5_0_0_, statusforv2_.id as id1_11_1_, statusforv2_.name as name2_11_1_ from vacancy_status statuslist0_ left outer join author user1_ on statuslist0_.author_id=user1_.id left outer join status_for_vacancy statusforv2_ on statuslist0_.status_for_vacancy_id=statusforv2_.id where statuslist0_.vacancy_id=?
Hibernate: select skills0_.vacancy_id as vacancy1_12_1_, skills0_.skill_id as skill2_13_1_, skill1_.id as id1_9_0_, skill1_.name as name2_9_0_ from vacancy_skill skills0_ inner join skill skill1_ on skills0_.skill_id=skill1_.id where skills0_.vacancy_id=?
Hibernate: select events0_.vacancy_id as vacancy10_12_6_, events0_.id as id1_5_6_, events0_.id as id1_5_5_, events0_.author_id as author6_5_5_, events0_.candidate_id as candidat7_5_5_, events0_.creation_date as creation2_5_5_, events0_.description as descript3_5_5_, events0_.event_date as event4_5_5_, events0_.event_status_id as event8_5_5_, events0_.event_type_id as event9_5_5_, events0_.name as name5_5_5_, events0_.vacancy_id as vacancy10_5_5_, user1_.id as id1_0_0_, user1_.name as name2_0_0_, user1_.surname as surname3_0_0_, user1_.login as login4_0_0_, user1_.password as password5_0_0_, candidate2_.id as id1_1_1_, candidate2_.name as name2_1_1_, candidate2_.surname as surname3_1_1_, candidate2_.author_id as author7_1_1_, candidate2_.creation_date as creation4_1_1_, candidate2_.phone as phone5_1_1_, candidate2_.cv_url as cv6_1_1_, user3_.id as id1_0_2_, user3_.name as name2_0_2_, user3_.surname as surname3_0_2_, user3_.login as login4_0_2_, user3_.password as password5_0_2_, eventstatu4_.id as id1_6_3_, eventstatu4_.name as name2_6_3_, eventtype5_.id as id1_7_4_, eventtype5_.name as name2_7_4_ from event events0_ left outer join author user1_ on events0_.author_id=user1_.id left outer join candidate candidate2_ on events0_.candidate_id=candidate2_.id left outer join author user3_ on candidate2_.author_id=user3_.id left outer join event_status eventstatu4_ on events0_.event_status_id=eventstatu4_.id left outer join event_type eventtype5_ on events0_.event_type_id=eventtype5_.id where events0_.vacancy_id=?
Hibernate: select comments0_.vacancy_id as vacancy6_12_4_, comments0_.id as id1_8_4_, comments0_.id as id1_8_3_, comments0_.author_id as author4_8_3_, comments0_.candidate_id as candidat5_8_3_, comments0_.creation_date as creation2_8_3_, comments0_.text as text3_8_3_, comments0_.vacancy_id as vacancy6_8_3_, user1_.id as id1_0_0_, user1_.name as name2_0_0_, user1_.surname as surname3_0_0_, user1_.login as login4_0_0_, user1_.password as password5_0_0_, candidate2_.id as id1_1_1_, candidate2_.name as name2_1_1_, candidate2_.surname as surname3_1_1_, candidate2_.author_id as author7_1_1_, candidate2_.creation_date as creation4_1_1_, candidate2_.phone as phone5_1_1_, candidate2_.cv_url as cv6_1_1_, user3_.id as id1_0_2_, user3_.name as name2_0_2_, user3_.surname as surname3_0_2_, user3_.login as login4_0_2_, user3_.password as password5_0_2_ from note comments0_ left outer join author user1_ on comments0_.author_id=user1_.id left outer join candidate candidate2_ on comments0_.candidate_id=candidate2_.id left outer join author user3_ on candidate2_.author_id=user3_.id where comments0_.vacancy_id=?
Hibernate: select candidates0_.vacancy_id as vacancy2_12_2_, candidates0_.candidate_id as candidat1_4_2_, candidate1_.id as id1_1_0_, candidate1_.name as name2_1_0_, candidate1_.surname as surname3_1_0_, candidate1_.author_id as author7_1_0_, candidate1_.creation_date as creation4_1_0_, candidate1_.phone as phone5_1_0_, candidate1_.cv_url as cv6_1_0_, user2_.id as id1_0_1_, user2_.name as name2_0_1_, user2_.surname as surname3_0_1_, user2_.login as login4_0_1_, user2_.password as password5_0_1_ from candidate_vacancy candidates0_ inner join candidate candidate1_ on candidates0_.candidate_id=candidate1_.id left outer join author user2_ on candidate1_.author_id=user2_.id where candidates0_.vacancy_id=?
Hibernate: select statuslist0_.candidate_id as candidat4_1_3_, statuslist0_.id as id1_3_3_, statuslist0_.id as id1_3_2_, statuslist0_.author_id as author3_3_2_, statuslist0_.creation_date as creation2_3_2_, statuslist0_.candidate_id as candidat4_3_2_, statuslist0_.status_for_candidate_id as status5_3_2_, user1_.id as id1_0_0_, user1_.name as name2_0_0_, user1_.surname as surname3_0_0_, user1_.login as login4_0_0_, user1_.password as password5_0_0_, statusforc2_.id as id1_10_1_, statusforc2_.name as name2_10_1_ from candidate_status statuslist0_ left outer join author user1_ on statuslist0_.author_id=user1_.id left outer join status_for_candidate statusforc2_ on statuslist0_.status_for_candidate_id=statusforc2_.id where statuslist0_.candidate_id=?
Hibernate: select skills0_.candidate_id as candidat1_1_1_, skills0_.skills_id as skills2_2_1_, skill1_.id as id1_9_0_, skill1_.name as name2_9_0_ from candidate_skill skills0_ inner join skill skill1_ on skills0_.skills_id=skill1_.id where skills0_.candidate_id=?
Hibernate: select events0_.candidate_id as candidat7_1_6_, events0_.id as id1_5_6_, events0_.id as id1_5_5_, events0_.author_id as author6_5_5_, events0_.candidate_id as candidat7_5_5_, events0_.creation_date as creation2_5_5_, events0_.description as descript3_5_5_, events0_.event_date as event4_5_5_, events0_.event_status_id as event8_5_5_, events0_.event_type_id as event9_5_5_, events0_.name as name5_5_5_, events0_.vacancy_id as vacancy10_5_5_, user1_.id as id1_0_0_, user1_.name as name2_0_0_, user1_.surname as surname3_0_0_, user1_.login as login4_0_0_, user1_.password as password5_0_0_, eventstatu2_.id as id1_6_1_, eventstatu2_.name as name2_6_1_, eventtype3_.id as id1_7_2_, eventtype3_.name as name2_7_2_, vacancy4_.id as id1_12_3_, vacancy4_.author_id as author5_12_3_, vacancy4_.creation_date as creation2_12_3_, vacancy4_.description as descript3_12_3_, vacancy4_.name as name4_12_3_, user5_.id as id1_0_4_, user5_.name as name2_0_4_, user5_.surname as surname3_0_4_, user5_.login as login4_0_4_, user5_.password as password5_0_4_ from event events0_ left outer join author user1_ on events0_.author_id=user1_.id left outer join event_status eventstatu2_ on events0_.event_status_id=eventstatu2_.id left outer join event_type eventtype3_ on events0_.event_type_id=eventtype3_.id left outer join vacancy vacancy4_ on events0_.vacancy_id=vacancy4_.id left outer join author user5_ on vacancy4_.author_id=user5_.id where events0_.candidate_id=?
Hibernate: select comments0_.candidate_id as candidat5_1_4_, comments0_.id as id1_8_4_, comments0_.id as id1_8_3_, comments0_.author_id as author4_8_3_, comments0_.candidate_id as candidat5_8_3_, comments0_.creation_date as creation2_8_3_, comments0_.text as text3_8_3_, comments0_.vacancy_id as vacancy6_8_3_, user1_.id as id1_0_0_, user1_.name as name2_0_0_, user1_.surname as surname3_0_0_, user1_.login as login4_0_0_, user1_.password as password5_0_0_, vacancy2_.id as id1_12_1_, vacancy2_.author_id as author5_12_1_, vacancy2_.creation_date as creation2_12_1_, vacancy2_.description as descript3_12_1_, vacancy2_.name as name4_12_1_, user3_.id as id1_0_2_, user3_.name as name2_0_2_, user3_.surname as surname3_0_2_, user3_.login as login4_0_2_, user3_.password as password5_0_2_ from note comments0_ left outer join author user1_ on comments0_.author_id=user1_.id left outer join vacancy vacancy2_ on comments0_.vacancy_id=vacancy2_.id left outer join author user3_ on vacancy2_.author_id=user3_.id where comments0_.candidate_id=?