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<SystemVisitDir> dirs=new java.util.ArrayList<SystemVisitDir>();

        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<SystemVisitDir> dirs=new java.util.ArrayList<SystemVisitDir>();

     public Long getId() {

      return id;

     }

    //setter及getter

    }view plaincopy to clipboardprint?
    <STRONG>２、SystemVisitDir 模型</STRONG>

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