Hibernate hbm2ddl.auto，可能的价值观和他们做什么 - 任何官方的解释？ [英] Hibernate hbm2ddl.auto, possible values and what they do - any official explanation?
问题描述
我正在查看Hibernate hbm2ddl.auto 配置属性及其可能的值：
I am looking at the Hibernate hbm2ddl.auto configuration property and its possible values:
-
验证 -
更新 -
创建 -
create-drop
validateupdatecreatecreate-drop
是否有关于所有这些值做什么的官方，完整说明？
Is there an official, full explanation about what all these values do?
Hibernate参考文档仅简要介绍 create-drop ，但不会说关于其他值的任何内容：
The Hibernate Reference Documentation only talks briefly about create-drop, but doesn't say anything about the other values:
hibernate.hbm2ddl.auto
当创建 SessionFactory 时，自动验证或将模式DDL导出到数据库。使用 create-drop ，当 SessionFactory 被明确关闭时，数据库模式将被删除。
Automatically validates or exports schema DDL to the database when the SessionFactory is created. With create-drop, the database schema will be dropped when the SessionFactory is closed explicitly.
例如 验证 更新 | 创建 | create-drop
我发现非常有用这些SO问题的解释：
I found very useful explanations in these SO questions:
- Hibernate hbm2ddl.auto possible values and what they do?
- Schema is not dropped on hbmddl.auto = create.drop
但在官方文档中仍然没有。任何指针？
But still nothing in the official documentation. Any pointers?
推荐答案
您提供的链接已经是官方文档。所以，今天没有什么更多的官方和全面的。
The link you provided is already the official documentation. So, there's nothing more official and comprehensive as-of today.
所以我猜你的问题的答案是双重的：
So I guess the answer to your question is two-fold:
- 在 Hibernate中提交增强请求问题跟踪器（更好的提案）
- 或阅读相应的代码
- either file an enhancement request in the Hibernate issue tracker (better with a proposal)
- or read the corresponding code
我知道这不是你梦寐以求的完美答案，但这其实是今天所有的。
I know this isn't the perfect answer you dreamt about, but this is actually all you have today.
但好消息是项目是开源的，所以你需要帮助改进它： - ）。
But the good news is that the project is open-source, so you have all you need to help improve it :-).
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