Генерация классов доменов(JPA)

package domens;
 
import java.io.Serializable;
import javax.persistence.*;
import java.util.Date;
import java.util.Set;
 
 
/**
 * The persistent class for the agent database table.
 * 
 */
@Entity
public class Agent implements Serializable {
    private static final long serialVersionUID = 1L;
 
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;
 
    @Temporal( TemporalType.DATE)
    private Date borndate;
 
    private String fio;
 
    @Temporal( TemporalType.DATE)
    private Date hiringdate;
 
    @Column(name="id_document")
    private Integer idDocument;
 
    @Column(name="id_staff")
    private Integer idStaff;
 
    private String post;
 
    private String privatestatus;
 
    private Integer recruitstaffcount;
 
    private String sex;
 
    //bi-directional many-to-one association to Country
    @ManyToOne
    @JoinColumn(name="id_country")
    private Country country;
 
    //bi-directional many-to-one association to Document
    @OneToMany(mappedBy="agent", fetch=FetchType.EAGER)
    private Set<Document> documents;
 
    //bi-directional many-to-one association to Dotagent
    @OneToMany(mappedBy="agent", fetch=FetchType.EAGER)
    private Set<Dotagent> dotagents;
 
    //bi-directional many-to-one association to Staff
    @OneToMany(mappedBy="agent", fetch=FetchType.EAGER)
    private Set<Staff> staffs;
 
    public Agent() {
    }
 
    public Integer getId() {
        return this.id;
    }
 
    public void setId(Integer id) {
        this.id = id;
    }
 
    public Date getBorndate() {
        return this.borndate;
    }
 
    public void setBorndate(Date borndate) {
        this.borndate = borndate;
    }
 
    public String getFio() {
        return this.fio;
    }
 
    public void setFio(String fio) {
        this.fio = fio;
    }
 
    public Date getHiringdate() {
        return this.hiringdate;
    }
 
    public void setHiringdate(Date hiringdate) {
        this.hiringdate = hiringdate;
    }
 
    public Integer getIdDocument() {
        return this.idDocument;
    }
 
    public void setIdDocument(Integer idDocument) {
        this.idDocument = idDocument;
    }
 
    public Integer getIdStaff() {
        return this.idStaff;
    }
 
    public void setIdStaff(Integer idStaff) {
        this.idStaff = idStaff;
    }
 
    public String getPost() {
        return this.post;
    }
 
    public void setPost(String post) {
        this.post = post;
    }
 
    public String getPrivatestatus() {
        return this.privatestatus;
    }
 
    public void setPrivatestatus(String privatestatus) {
        this.privatestatus = privatestatus;
    }
 
    public Integer getRecruitstaffcount() {
        return this.recruitstaffcount;
    }
 
    public void setRecruitstaffcount(Integer recruitstaffcount) {
        this.recruitstaffcount = recruitstaffcount;
    }
 
    public String getSex() {
        return this.sex;
    }
 
    public void setSex(String sex) {
        this.sex = sex;
    }
 
    public Country getCountry() {
        return this.country;
    }
 
    public void setCountry(Country country) {
        this.country = country;
    }
    
    public Set<Document> getDocuments() {
        return this.documents;
    }
 
    public void setDocuments(Set<Document> documents) {
        this.documents = documents;
    }
    
    public Set<Dotagent> getDotagents() {
        return this.dotagents;
    }
 
    public void setDotagents(Set<Dotagent> dotagents) {
        this.dotagents = dotagents;
    }
    
    public Set<Staff> getStaffs() {
        return this.staffs;
    }
 
    public void setStaffs(Set<Staff> staffs) {
        this.staffs = staffs;
    }
    
}

package domens;
 
import java.io.Serializable;
import javax.persistence.*;
import java.util.Set;
 
 
/**
 * The persistent class for the country database table.
 * 
 */
@Entity
public class Country implements Serializable {
    private static final long serialVersionUID = 1L;
 
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;
 
    private String econimiclevel;
 
    private String name;
 
    private String politregim;
 
    private Integer priority;
 
    private Integer sitizencount;
 
    private String xcoord;
 
    private String ycoord;
 
    //bi-directional many-to-one association to Agent
    @OneToMany(mappedBy="country", fetch=FetchType.EAGER)
    private Set<Agent> agents;
 
    //bi-directional many-to-one association to Dot
    @OneToMany(mappedBy="country", fetch=FetchType.EAGER)
    private Set<Dot> dots;
 
    public Country() {
    }
 
    public Integer getId() {
        return this.id;
    }
 
    public void setId(Integer id) {
        this.id = id;
    }
 
    public String getEconimiclevel() {
        return this.econimiclevel;
    }
 
    public void setEconimiclevel(String econimiclevel) {
        this.econimiclevel = econimiclevel;
    }
 
    public String getName() {
        return this.name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public String getPolitregim() {
        return this.politregim;
    }
 
    public void setPolitregim(String politregim) {
        this.politregim = politregim;
    }
 
    public Integer getPriority() {
        return this.priority;
    }
 
    public void setPriority(Integer priority) {
        this.priority = priority;
    }
 
    public Integer getSitizencount() {
        return this.sitizencount;
    }
 
    public void setSitizencount(Integer sitizencount) {
        this.sitizencount = sitizencount;
    }
 
    public String getXcoord() {
        return this.xcoord;
    }
 
    public void setXcoord(String xcoord) {
        this.xcoord = xcoord;
    }
 
    public String getYcoord() {
        return this.ycoord;
    }
 
    public void setYcoord(String ycoord) {
        this.ycoord = ycoord;
    }
 
    public Set<Agent> getAgents() {
        return this.agents;
    }
 
    public void setAgents(Set<Agent> agents) {
        this.agents = agents;
    }
    
    public Set<Dot> getDots() {
        return this.dots;
    }
 
    public void setDots(Set<Dot> dots) {
        this.dots = dots;
    }
    
}

package domens;
 
import java.util.List;
import java.util.Properties;
 
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.Query;
 
import org.apache.commons.collections.CollectionUtils;
 
import  domens.Agent;
import  domens.Country;
public class test {
    public static void main(String[] args) {
        Properties props = new Properties();
        
        props.put("openjpa.ConnectionURL", "jdbc:postgresql://localhost:5432/agency");
        props.put("openjpa.ConnectionDriverName", "org.postgresql.Driver");
        props.put("openjpa.ConnectionUserName", "postgres");
        props.put("openjpa.ConnectionPassword", "111");
        props.put("openjpa.jdbc.SynchronizeMappings", "buildSchema");
 
        // Создаем фабрику менеджеров
        EntityManagerFactory emf = Persistence.
                    createEntityManagerFactory("cool", props);
        
        
        readEntities(emf);}
 
    private static void readEntities(EntityManagerFactory emf) {
        EntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        
            Query q = em.createQuery("SELECT x FROM Country x");
            List<?> list = q.getResultList();
            if (CollectionUtils.isNotEmpty(list)){
                for(Object object: list){
                    Country b = (Country) object;
                    System.out.println("Book" + " " + "is" + " " + b.getId());
                    System.out.println("isbn" + " " + "is" + " "+ b.getEconimiclevel());
                    System.out.println("author" + " " + "is" + " "+ b.getName());
                    System.out.println("language" + " " + "is" + " "+ b.getPolitregim());
                    for(Agent af: b.getAgents()){
                        System.out.println(" aftar: " + " " + "is" + " "+ af.getFio());
                        System.out.println(" age: " + " " + "is" + " "+ af.getSex());
                        System.out.println("id: " + " " + "is" + " "+ af.getPrivatestatus());
                        System.out.println("book id: " + " " + "is" + " "+ af.getIdStaff());
                    }
                }
            } 
            else {
                System.out.println("No Books");
                }
            em.getTransaction().commit();
            
            
        }
}