Restart

          From now, i will restart my blog , try to record sth of my life, including some thoughts and research results of technology, the only little hope is that the blog can leave my memory of life, as time flying, when i open it , i can get something.

          Technology - Hibernate collection:
          Maybe i used to write sth related before.
          Several points as follows:
          1. Define interface as property, for Hibernate will use its own implementation during runtime.
          2. <key> element is used to identiry foreign key for specified table.
          3. <element> and <composite-element> is used for value type definition while <one-to-many> and <many-to-many> is used for entities type.
          4. indexed-collections contain : map, list, index is used to record position for certain record in the container.<map-key> for map while <index-list> for list.
          Next two items is for bidirection:
          5. inverse can be set in either sides for many-to-many relation.
          6. For one-to-many,  many sides will mantain relationship between object. exception happened when many side is index container.in this situation, it is not a completely "bidirectoinal".

          7. Sort is done in memory while order by is down in DB.
          8. <Bag> is used when property is defined as list, but <index-list> is not welcome.
          9. <idbag> is a list which can generate an id for primary key.

          posted on 2008-06-11 18:27 Sheldon Sun 閱讀(512) 評論(0)  編輯  收藏


          只有注冊用戶登錄后才能發表評論。


          網站導航:
           
          <2008年6月>
          25262728293031
          1234567
          891011121314
          15161718192021
          22232425262728
          293012345

          導航

          統計

          常用鏈接

          留言簿(3)

          隨筆檔案

          文章檔案

          搜索

          最新評論

          閱讀排行榜

          評論排行榜

          主站蜘蛛池模板: 临安市| 南召县| 乐东| 丘北县| 通山县| 永新县| 施甸县| 金塔县| 吐鲁番市| 观塘区| 泾川县| 广东省| 山东省| 南投市| 辉县市| 琼结县| 泰和县| 江华| 定远县| 贡嘎县| 邯郸县| 滨州市| 凤山县| 曲阳县| 枣强县| 莲花县| 襄樊市| 华容县| 富宁县| 清新县| 武定县| 临洮县| 丹凤县| 本溪| 湄潭县| 乐陵市| 铁力市| 临潭县| 宣威市| 黄浦区| 海门市|