大家看看我的Hibernate同一个表双向1:n关联是否正确？

Question

import java.util.HashSet;
import java.util.Set;import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
/**
 * SysTDepartment generated by MyEclipse - Hibernate Tools
 */@Entity
@javax.persistence.SequenceGenerator(
name="SEQ_GEN",
sequenceName="DEPARTMENTID"
)
public class SysTDepartment  implements java.io.Serializable {
    // Fields         private long deptid;
     private SysTDepartment parentDepartment;
     private long parentid;
     private String deptcode;
     private String deptname;
     private String linkman;
     private String businessarea;
     private String address;
     private String re;
     private String state;     
     private Set<SysTDepartment> departments = new HashSet();
     //private Set users = new HashSet();    // Constructors    /** default constructor */
    public SysTDepartment() {
    }    
    /** full constructor */
    public SysTDepartment(SysTDepartment sysTDepartment, long parentid, String deptcode, String deptname, String linkman, String businessarea, String address, String re, String state, Set<SysTDepartment> sysTDepartments) {
        this.parentDepartment = sysTDepartment;
        this.parentid = parentid;
        this.deptcode = deptcode;
        this.deptname = deptname;
        this.linkman = linkman;
        this.businessarea = businessarea;
        this.address = address;
        this.re = re;
        this.state = state;
        this.departments = sysTDepartments;
    }
       
    // Property accessors
    @Id @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="SEQ_GEN")
    public long getDeptid() {
        return this.deptid;
    }
    
    public void setDeptid(long deptid) {
        this.deptid = deptid;
    }    
         /**
 * @return Returns the parentid.
 */
public long getParentid() {
return parentid;
}
/**
 * @param parentid The parentid to set.
 */
public void setParentid(long parentid) {
this.parentid = parentid;
}
/**
 * @return Returns the parentDepartment.
 */
         @ManyToOne
         @JoinColumn(name="deptid", insertable=false, updatable=false)
public SysTDepartment getParentDepartment() {
return parentDepartment;
}
/**
 * @param parentDepartment The parentDepartment to set.
 */
public void setParentDepartment(SysTDepartment parentDepartment) {
this.parentDepartment = parentDepartment;
}    public String getDeptcode() {
        return this.deptcode;
    }
    
    public void setDeptcode(String deptcode) {
        this.deptcode = deptcode;
    }    public String getDeptname() {
        return this.deptname;
    }
    
    public void setDeptname(String deptname) {
        this.deptname = deptname;
    }    public String getLinkman() {
        return this.linkman;
    }
    
    public void setLinkman(String linkman) {
        this.linkman = linkman;
    }    public String getBusinessarea() {
        return this.businessarea;
    }
    
    public void setBusinessarea(String businessarea) {
        this.businessarea = businessarea;
    }
    
    public String getAddress() {
        return this.address;
    }
    
    public void setAddress(String address) {
        this.address = address;
    }    public String getRe() {
        return this.re;
    }
    
    public void setRe(String re) {
        this.re = re;
    }    public String getState() {
        return this.state;
    }
    
    public void setState(String state) {
        this.state = state;
    } /**
 * @return Returns the users.
 */ /**
 * @return Returns the departments.
 */
         @OneToMany
         @JoinColumn(name="parentid")
public Set<SysTDepartment> getDepartments() {
return departments;
}
/**
 * @param departments The departments to set.
 */
public void setDepartments(Set<SysTDepartment> departments) {
this.departments = departments;
}
   
    
}