BlogJava-<div align="center">花看半开，酒饮微醉</div>-随笔分类-开源软件框架http://www.blogjava.net/knowhow/category/26713.html<style> .header { height:0px; } </style>zh-cnSat, 20 Oct 2007 15:42:53 GMTSat, 20 Oct 2007 15:42:53 GMT60Hibernate一对多数据关联http://www.blogjava.net/knowhow/archive/2006/07/04/56537.htmlbaimbaimTue, 04 Jul 2006 06:45:00 GMThttp://www.blogjava.net/knowhow/archive/2006/07/04/56537.htmlhttp://www.blogjava.net/knowhow/comments/56537.htmlhttp://www.blogjava.net/knowhow/archive/2006/07/04/56537.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/56537.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/56537.html单向一对多和双向一对多关联，
单项关联可能出现的约束违例，解决约束违例的方法。  阅读全文

baim 2006-07-04 14:45 发表评论
]]>Hibernate一对一数据关联(二) http://www.blogjava.net/knowhow/archive/2006/07/03/56389.htmlbaimbaimMon, 03 Jul 2006 09:24:00 GMThttp://www.blogjava.net/knowhow/archive/2006/07/03/56389.htmlhttp://www.blogjava.net/knowhow/comments/56389.htmlhttp://www.blogjava.net/knowhow/archive/2006/07/03/56389.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/56389.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/56389.html阅读全文

baim 2006-07-03 17:24 发表评论
]]>Hibernate一对一数据关联(一)http://www.blogjava.net/knowhow/archive/2006/07/03/56372.htmlbaimbaimMon, 03 Jul 2006 08:37:00 GMThttp://www.blogjava.net/knowhow/archive/2006/07/03/56372.htmlhttp://www.blogjava.net/knowhow/comments/56372.htmlhttp://www.blogjava.net/knowhow/archive/2006/07/03/56372.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/56372.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/56372.html数据关联往往也是导致性能低下的原因，在开发中要特别注意这一点。

一对一关联有两种类型：
1.主键关联
2.唯一外键关联

在(一)中讨论主键关联，(二)种讨论唯一外键关联
  阅读全文

baim 2006-07-03 16:37 发表评论
]]>Hibernate实体层次设计(四)http://www.blogjava.net/knowhow/archive/2006/07/02/56181.htmlbaimbaimSun, 02 Jul 2006 10:32:00 GMThttp://www.blogjava.net/knowhow/archive/2006/07/02/56181.htmlhttp://www.blogjava.net/knowhow/comments/56181.htmlhttp://www.blogjava.net/knowhow/archive/2006/07/02/56181.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/56181.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/56181.html前两种方式，都要进行多表操作，这样带来的性能的消耗量是相当可观的，不利于高并发量的数据存取。
Table per class hierarchy提供了另外一中选择，这是实际开发中更常使用的方式，通过冗余字段表达同类型数据是很多情况下的选择。

实现：
通过配置文件中的discriminator节点。  阅读全文

baim 2006-07-02 18:32 发表评论
]]>Hibernate实体层次设计(三) http://www.blogjava.net/knowhow/archive/2006/07/02/56172.htmlbaimbaimSun, 02 Jul 2006 09:39:00 GMThttp://www.blogjava.net/knowhow/archive/2006/07/02/56172.htmlhttp://www.blogjava.net/knowhow/comments/56172.htmlhttp://www.blogjava.net/knowhow/archive/2006/07/02/56172.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/56172.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/56172.html父类TItem单独映射到一张主表，为子类TBook、TDVD分别单独设立一张子表，子表中只包含子类所扩展的属性。

实现：
通过配置文件中的joined-subclass节点。  阅读全文

baim 2006-07-02 17:39 发表评论
]]>Hibernate实体层次设计(二)http://www.blogjava.net/knowhow/archive/2006/07/02/56057.htmlbaimbaimSun, 02 Jul 2006 07:40:00 GMThttp://www.blogjava.net/knowhow/archive/2006/07/02/56057.htmlhttp://www.blogjava.net/knowhow/comments/56057.htmlhttp://www.blogjava.net/knowhow/archive/2006/07/02/56057.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/56057.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/56057.html每个子类对应一张数据库表的方式。

实现：
配置文件中不需要做特别处理  阅读全文

baim 2006-07-02 15:40 发表评论
]]>Hibernate实体层次设计(一)http://www.blogjava.net/knowhow/archive/2006/06/30/55972.htmlbaimbaimFri, 30 Jun 2006 08:43:00 GMThttp://www.blogjava.net/knowhow/archive/2006/06/30/55972.htmlhttp://www.blogjava.net/knowhow/comments/55972.htmlhttp://www.blogjava.net/knowhow/archive/2006/06/30/55972.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/55972.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/55972.html在关系型数据库的基础上，通过继承关系得到清晰合理的层次划分是Hibernate实体层次设计中的一个关键问题。
3种实现继承方法之间的比较。  阅读全文

baim 2006-06-30 16:43 发表评论
]]>Hibernate组件http://www.blogjava.net/knowhow/archive/2006/06/30/55970.htmlbaimbaimFri, 30 Jun 2006 07:47:00 GMThttp://www.blogjava.net/knowhow/archive/2006/06/30/55970.htmlhttp://www.blogjava.net/knowhow/comments/55970.htmlhttp://www.blogjava.net/knowhow/archive/2006/06/30/55970.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/55970.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/55970.html  阅读全文

baim 2006-06-30 15:47 发表评论
]]>使用Hibernate Tool执行Hql语句http://www.blogjava.net/knowhow/archive/2006/06/30/55889.htmlbaimbaimFri, 30 Jun 2006 02:55:00 GMThttp://www.blogjava.net/knowhow/archive/2006/06/30/55889.htmlhttp://www.blogjava.net/knowhow/comments/55889.htmlhttp://www.blogjava.net/knowhow/archive/2006/06/30/55889.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/55889.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/55889.html阅读全文

baim 2006-06-30 10:55 发表评论
]]>Hibernate复合主键的处理 (二) http://www.blogjava.net/knowhow/archive/2006/06/29/55828.htmlbaimbaimThu, 29 Jun 2006 14:42:00 GMThttp://www.blogjava.net/knowhow/archive/2006/06/29/55828.htmlhttp://www.blogjava.net/knowhow/comments/55828.htmlhttp://www.blogjava.net/knowhow/archive/2006/06/29/55828.html#Feedback1http://www.blogjava.net/knowhow/comments/commentRss/55828.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/55828.html阅读全文

baim 2006-06-29 22:42 发表评论
]]>Hibernate复合主键的处理(一)http://www.blogjava.net/knowhow/archive/2006/06/29/55784.htmlbaimbaimThu, 29 Jun 2006 13:58:00 GMThttp://www.blogjava.net/knowhow/archive/2006/06/29/55784.htmlhttp://www.blogjava.net/knowhow/comments/55784.htmlhttp://www.blogjava.net/knowhow/archive/2006/06/29/55784.html#Feedback1http://www.blogjava.net/knowhow/comments/commentRss/55784.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/55784.html阅读全文

baim 2006-06-29 21:58 发表评论
]]>Hibernate映射自定义数据类型http://www.blogjava.net/knowhow/archive/2006/06/29/55774.htmlbaimbaimThu, 29 Jun 2006 08:36:00 GMThttp://www.blogjava.net/knowhow/archive/2006/06/29/55774.htmlhttp://www.blogjava.net/knowhow/comments/55774.htmlhttp://www.blogjava.net/knowhow/archive/2006/06/29/55774.html#Feedback2http://www.blogjava.net/knowhow/comments/commentRss/55774.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/55774.html阅读全文

baim 2006-06-29 16:36 发表评论
]]>使用HibernateTool:一个简单的Hibernate程序(二) http://www.blogjava.net/knowhow/archive/2006/06/28/55601.htmlbaimbaimWed, 28 Jun 2006 11:54:00 GMThttp://www.blogjava.net/knowhow/archive/2006/06/28/55601.htmlhttp://www.blogjava.net/knowhow/comments/55601.htmlhttp://www.blogjava.net/knowhow/archive/2006/06/28/55601.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/55601.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/55601.html阅读全文

baim 2006-06-28 19:54 发表评论
]]>使用HibernateTool:一个简单的Hibernate程序(一)http://www.blogjava.net/knowhow/archive/2006/06/28/55576.htmlbaimbaimWed, 28 Jun 2006 11:07:00 GMThttp://www.blogjava.net/knowhow/archive/2006/06/28/55576.htmlhttp://www.blogjava.net/knowhow/comments/55576.htmlhttp://www.blogjava.net/knowhow/archive/2006/06/28/55576.html#Feedback0http://www.blogjava.net/knowhow/comments/commentRss/55576.htmlhttp://www.blogjava.net/knowhow/services/trackbacks/55576.html阅读全文

baim 2006-06-28 19:07 发表评论
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