JPA中的集合查询示例

１、VisitInfo模型

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    @Entity

    @Table(name = "System_VisitInfo")

    @Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)

    public class VisitInfo implements Serializable {

        private static final long serialVersionUID = 2877662856939429897L;

 

        @Id

        @GeneratedValue(strategy = GenerationType.TABLE)

        private Long id;

 

        private Date vdate;

 

        @Column(length = 200)

        private String fromUrl;

 

        @Column(length = 200)

        private String url;

 

        @Column(length = 50)

        private String ip;

 

        private Integer status;

 

        @Column(length=1000)

        private String remark;

 

        @ManyToMany

        private List dirs=new java.util.ArrayList();

        public Long getId() {

            return id;

        }

    //setter及getter

    }

    @Entity

    @Table(name = "System_VisitInfo")

    @Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)

    public class VisitInfo implements Serializable {

     private static final long serialVersionUID = 2877662856939429897L;

 

     @Id

     @GeneratedValue(strategy = GenerationType.TABLE)

     private Long id;

 

     private Date vdate;

 

     @Column(length = 200)

     private String fromUrl;

 

     @Column(length = 200)

     private String url;

 

     @Column(length = 50)

     private String ip;

 

     private Integer status;

 

     @Column(length=1000)

     private String remark;

 

     @ManyToMany

     private List dirs=new java.util.ArrayList();

     public Long getId() {

      return id;

     }

    //setter及getter

    }view plaincopy to clipboardprint?
    ２、SystemVisitDir 模型

 

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