JPA学习笔记-EJB-04JPA关联映射总结--2

UxSysMenu

package module.system.vo;

  

/**

 * liuyan

 */

@Entity

@Table(name = "ux_sys_menu")

public class UxSysMenu implements java.io.Serializable {

 

    // Fields

 

    private Integer imenuid;

    private String smenuname;

    private String smenuurl;

    private Integer iparentid;

    private Integer iorder;

    private String simgico;

    private String isvisible;

    private Integer ilevel;

 

    /** default constructor */

    public UxSysMenu() {

    }

 

   

    //去掉双向关联映射，为了更新菜单时不影响角色实体记录  

    private Set<UxRole> uxRoles;

   

    @JSON(serialize = false)

    @ManyToMany(fetch = FetchType.LAZY)

    @JoinTable(name = "ux_sys_role_menu", joinColumns = { @JoinColumn(name = "menuId") }, inverseJoinColumns = { @JoinColumn(name = "roleId") })

    public Set<UxRole> getUxRoles() {

       return uxRoles;

    }

 

    public void setUxRoles(Set<UxRole> uxRoles) {

       this.uxRoles = uxRoles;

    }

 

    // Property accessors

    @Id

    @Column(name = "imenuid", unique = true, nullable = false)

    public Integer getImenuid() {

       return this.imenuid;

    }

 

    public void setImenuid(Integer imenuid) {

       this.imenuid = imenuid;

    }

 

    @Column(name = "smenuname", nullable = false, length = 512)

    public String getSmenuname() {

       return this.smenuname;

    }

 

    public void setSmenuname(String smenuname) {

       this.smenuname = smenuname;

    }

 

    @Column(name = "smenuurl", length = 128)

    public String getSmenuurl() {

       return this.smenuurl;

    }

 

    public void setSmenuurl(String smenuurl) {

       this.smenuurl = smenuurl;

    }

 

    @Column(name = "iparentid", nullable = false)

    public Integer getIparentid() {

       return this.iparentid;

    }

 

    public void setIparentid(Integer iparentid) {

       this.iparentid = iparentid;

    }

 

    @Column(name = "iorder")

    public Integer getIorder() {

       return this.iorder;

    }

 

    public void setIorder(Integer iorder) {

       this.iorder = iorder;

    }

 

    @Column(name = "simgico", length = 64)

    public String getSimgico() {

       return this.simgico;

    }

 

    public void setSimgico(String simgico) {

       this.simgico = simgico;

    }

 

    @Column(name = "isvisible", nullable = false, length = 8)

    public String getIsvisible() {

       return this.isvisible;

    }

 

    public void setIsvisible(String isvisible) {

       this.isvisible = isvisible;

    }

 

    @Column(name = "ilevel", nullable = true)

    public Integer getIlevel() {

       return this.ilevel;

    }

 

    public void setIlevel(Integer ilevel) {

       this.ilevel = ilevel;

    }

   

    /**

     * 是否主键相等

     */

    @Override

    public boolean equals(Object obj) {

      

       if(obj instanceof UxSysMenu){

           UxSysMenu uxSysMenu = (UxSysMenu)obj;

           if(uxSysMenu.imenuid == this.imenuid){

              return true;

           }

          

       }

      

       return false;

    }

 

    @Override

    public int hashCode() {

       // TODO Auto-generated method stub

       return this.imenuid;

    }

}

说明：菜单实体与用户实体差不多，我们只说说不同的地方。菜单实体实现了超级父类Object的equals(Object obj)、hashCode()方法，这样在别的管理实体的Set<UxSysMenu>就可以区分集合中的元素哪些实体是重复的。