Hibernate：基于运行时的映射生成类
[英]Hibernate: generate classes based on mappings in runtime
问题描述
Is there a way to generate domain classes based on Hibernate mapping? 
有没有办法基于Hibernate映射生成域类？ I anticipate answers about hbm2java tool, but it is designed to be used in build time. 我期待有关hbm2java工具的答案，但它被设计用于构建时。 Is it possible to perform such task at runtime? 是否可以在运行时执行此类任务？
1 个解决方案
解决方案1
2 2011-12-23 18:42:11
Short answer: this may be possible, but generally not a good idea. 简短的回答：这可能是可能的，但通常不是一个好主意。
Hibernate and other ORM libraries are meant to be a bridge between a database and a object oriented domain in your application. Hibernate和其他ORM库旨在成为应用程序中数据库和面向对象域之间的桥梁。 If you want to generate your domain during runtime, you would negate the whole reason for having a domain or using Hibernate. 如果要在运行时生成域，则可以否定拥有域或使用Hibernate的全部原因。 Honestly, Hibernate was not designed to do this. 老实说，Hibernate不是为此而设计的。
However, if you want a tool to investigate a schema and report back on what tables, columns, etc structure exists I would suggest using regular sql. 但是，如果您想要一个工具来调查架构并报告存在哪些表，列等结构，我建议使用常规sql。
As you mentioned, if you want to generate a domain off of a set of .hbm.xml files, use the hbm2java tool and leverage the generated code. 如前所述，如果要从一组.hbm.xml文件生成域，请使用hbm2java工具并利用生成的代码。
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