BlogJava-花看半开，酒饮微醉-随笔分类-ORM：Hibernate及其他http://www.blogjava.net/myblog/category/12780.html<style> .header { height:20px; } .news { display:none; } .footer { display:none; } #leftcontent { position : absolute; top : 20px; left : 20px; width : 220px; background-color : #FFFFFF; border : 1px dotted #8B8D72; border-top: 1px dotted #8B8D72; border-bottom: 1px dotted #8B8D72; font-family:Arial; font-size:11px; } </style>zh-cnFri, 02 Mar 2007 07:08:09 GMTFri, 02 Mar 2007 07:08:09 GMT60iBatishttp://www.blogjava.net/myblog/archive/2006/07/22/59565.htmlknowhowknowhowSat, 22 Jul 2006 09:50:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/22/59565.htmlhttp://www.blogjava.net/myblog/comments/59565.htmlhttp://www.blogjava.net/myblog/archive/2006/07/22/59565.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/59565.htmlhttp://www.blogjava.net/myblog/services/trackbacks/59565.html阅读全文

knowhow 2006-07-22 17:50 发表评论
]]>hibernate延迟加载http://www.blogjava.net/myblog/archive/2006/07/16/58394.htmlknowhowknowhowSun, 16 Jul 2006 02:31:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/16/58394.htmlhttp://www.blogjava.net/myblog/comments/58394.htmlhttp://www.blogjava.net/myblog/archive/2006/07/16/58394.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/58394.htmlhttp://www.blogjava.net/myblog/services/trackbacks/58394.html其中对集合的延迟加载特性意义最为重大。
由于传统的Java Set, Map, List实现不能满足要求，Hibernate根据这些接口提供了自己的实现。  阅读全文

knowhow 2006-07-16 10:31 发表评论
]]>hibernate数据加载http://www.blogjava.net/myblog/archive/2006/07/16/58393.htmlknowhowknowhowSun, 16 Jul 2006 02:24:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/16/58393.htmlhttp://www.blogjava.net/myblog/comments/58393.htmlhttp://www.blogjava.net/myblog/archive/2006/07/16/58393.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/58393.htmlhttp://www.blogjava.net/myblog/services/trackbacks/58393.html阅读全文

knowhow 2006-07-16 10:24 发表评论
]]>hibernate事务处理和锁http://www.blogjava.net/myblog/archive/2006/07/16/58392.htmlknowhowknowhowSun, 16 Jul 2006 02:18:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/16/58392.htmlhttp://www.blogjava.net/myblog/comments/58392.htmlhttp://www.blogjava.net/myblog/archive/2006/07/16/58392.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/58392.htmlhttp://www.blogjava.net/myblog/services/trackbacks/58392.html阅读全文

knowhow 2006-07-16 10:18 发表评论
]]>Hibernate 数据缓存http://www.blogjava.net/myblog/archive/2006/07/16/58389.htmlknowhowknowhowSun, 16 Jul 2006 02:01:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/16/58389.htmlhttp://www.blogjava.net/myblog/comments/58389.htmlhttp://www.blogjava.net/myblog/archive/2006/07/16/58389.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/58389.htmlhttp://www.blogjava.net/myblog/services/trackbacks/58389.html阅读全文

knowhow 2006-07-16 10:01 发表评论
]]>HQLhttp://www.blogjava.net/myblog/archive/2006/07/07/56865.htmlknowhowknowhowFri, 07 Jul 2006 02:54:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/07/56865.htmlhttp://www.blogjava.net/myblog/comments/56865.htmlhttp://www.blogjava.net/myblog/archive/2006/07/07/56865.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56865.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56865.html阅读全文

knowhow 2006-07-07 10:54 发表评论
]]>Hibernate一对多数据关联http://www.blogjava.net/myblog/archive/2006/07/05/56770.htmlknowhowknowhowWed, 05 Jul 2006 07:13:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56770.htmlhttp://www.blogjava.net/myblog/comments/56770.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56770.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56770.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56770.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

knowhow 2006-07-05 15:13 发表评论
]]>Hibernate一对一数据关联(二) http://www.blogjava.net/myblog/archive/2006/07/05/56769.htmlknowhowknowhowWed, 05 Jul 2006 07:11:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56769.htmlhttp://www.blogjava.net/myblog/comments/56769.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56769.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56769.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56769.html阅读全文

knowhow 2006-07-05 15:11 发表评论
]]>Hibernate一对一数据关联(一) http://www.blogjava.net/myblog/archive/2006/07/05/56768.htmlknowhowknowhowWed, 05 Jul 2006 07:08:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56768.htmlhttp://www.blogjava.net/myblog/comments/56768.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56768.html#Feedback2http://www.blogjava.net/myblog/comments/commentRss/56768.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56768.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

knowhow 2006-07-05 15:08 发表评论
]]>Hibernate实体层次设计(四) http://www.blogjava.net/myblog/archive/2006/07/05/56765.htmlknowhowknowhowWed, 05 Jul 2006 07:04:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56765.htmlhttp://www.blogjava.net/myblog/comments/56765.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56765.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56765.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56765.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

knowhow 2006-07-05 15:04 发表评论
]]>Hibernate实体层次设计(三) http://www.blogjava.net/myblog/archive/2006/07/05/56764.htmlknowhowknowhowWed, 05 Jul 2006 07:02:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56764.htmlhttp://www.blogjava.net/myblog/comments/56764.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56764.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56764.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56764.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

knowhow 2006-07-05 15:02 发表评论
]]>Hibernate实体层次设计(二) http://www.blogjava.net/myblog/archive/2006/07/05/56763.htmlknowhowknowhowWed, 05 Jul 2006 07:00:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56763.htmlhttp://www.blogjava.net/myblog/comments/56763.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56763.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56763.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56763.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

knowhow 2006-07-05 15:00 发表评论
]]>Hibernate实体层次设计(一) http://www.blogjava.net/myblog/archive/2006/07/05/56761.htmlknowhowknowhowWed, 05 Jul 2006 06:58:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56761.htmlhttp://www.blogjava.net/myblog/comments/56761.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56761.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56761.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56761.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

knowhow 2006-07-05 14:58 发表评论
]]>Hibernate组件http://www.blogjava.net/myblog/archive/2006/07/05/56759.htmlknowhowknowhowWed, 05 Jul 2006 06:55:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56759.htmlhttp://www.blogjava.net/myblog/comments/56759.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56759.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56759.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56759.html阅读全文

knowhow 2006-07-05 14:55 发表评论
]]>使用Hibernate Tool执行Hql语句http://www.blogjava.net/myblog/archive/2006/07/05/56757.htmlknowhowknowhowWed, 05 Jul 2006 06:52:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56757.htmlhttp://www.blogjava.net/myblog/comments/56757.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56757.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56757.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56757.html阅读全文

knowhow 2006-07-05 14:52 发表评论
]]>Hibernate复合主键的处理(二) http://www.blogjava.net/myblog/archive/2006/07/05/56756.htmlknowhowknowhowWed, 05 Jul 2006 06:50:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56756.htmlhttp://www.blogjava.net/myblog/comments/56756.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56756.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56756.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56756.html阅读全文

knowhow 2006-07-05 14:50 发表评论
]]>Hibernate复合主键的处理(一) http://www.blogjava.net/myblog/archive/2006/07/05/56753.htmlknowhowknowhowWed, 05 Jul 2006 06:48:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56753.htmlhttp://www.blogjava.net/myblog/comments/56753.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56753.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56753.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56753.html阅读全文

knowhow 2006-07-05 14:48 发表评论
]]>Hibernate映射自定义数据类型http://www.blogjava.net/myblog/archive/2006/07/05/56750.htmlknowhowknowhowWed, 05 Jul 2006 06:46:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56750.htmlhttp://www.blogjava.net/myblog/comments/56750.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56750.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56750.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56750.html阅读全文

knowhow 2006-07-05 14:46 发表评论
]]>使用HibernateTool:一个简单的Hibernate程序(二) http://www.blogjava.net/myblog/archive/2006/07/05/56745.htmlknowhowknowhowWed, 05 Jul 2006 06:37:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56745.htmlhttp://www.blogjava.net/myblog/comments/56745.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56745.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56745.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56745.html阅读全文

knowhow 2006-07-05 14:37 发表评论
]]>使用HibernateTool:一个简单的Hibernate程序(一)http://www.blogjava.net/myblog/archive/2006/07/05/56742.htmlknowhowknowhowWed, 05 Jul 2006 06:31:00 GMThttp://www.blogjava.net/myblog/archive/2006/07/05/56742.htmlhttp://www.blogjava.net/myblog/comments/56742.htmlhttp://www.blogjava.net/myblog/archive/2006/07/05/56742.html#Feedback0http://www.blogjava.net/myblog/comments/commentRss/56742.htmlhttp://www.blogjava.net/myblog/services/trackbacks/56742.html阅读全文

knowhow 2006-07-05 14:31 发表评论
]]>