JSR-303和JPA重叠 [英] JSR-303 and JPA overlapping
问题描述
Aloha嘿！
我已经使用了JPA注释，现在我也想使用JSR-303注释来验证属性。
I already use JPA annotations, now I'd like to use JSR-303 annotations to validate attributes as well.
我的问题是，他们彼此之间的互动情况如何？
如果我使用 @Basic（可选= false）或 @NotNull ，我还需要使用 nullable = false 等。 ？
My questions is, how well do they interact with each other?
If I use @Basic(optional=false) or @NotNull, will I still have to use nullable=false etc.?
我还没有决定使用哪种验证器实现，例如hibernate-validator或oVal（您也可以建议其他人。我知道 oVal不是JSR-303实现，但它映射了大多数注释）。
I haven't decided which validator implementation to use, e.g. hibernate-validator or oVal (You may also suggest others. I know that oVal is not a JSR-303 implementation, but it maps most annotations).
oVal手册（见上文）指出某些JPA注释也将被翻译成oVal注释。
Hibernate-validator 类似的机制。
oVal manual (see above) states that certain JPA annotations will be translated into oVal annotations as well. Hibernate-validator has a similar mechanism.
有些搜索结果声称Bean Validation和JPA正式重叠，但我没有想出具体的方法。
Some search results claim that Bean Validation and JPA do officially overlap, but I have not figured in which exact way.
推荐答案
几乎完全阅读这两个规范之后，这就是我找到的。
After reading both specifications almost entirely, this is what I found.
我会自己回答我的问题;
截至目前;
I'll thusly answer my question myself;
As of now;
-
JPA和BV注释通常具有相同的含义。
然而，BV约束的使用不会影响JPA实现的已创建DDL架构约束。
JPA and BV annotations do often share the same meaning. The usage of BV constraints however does not influence the created DDL schema constraints of the JPA implementation.
如果配置了JPA实现，则JPA实现将如此配置，在预先保留，预更新和预删除时检查BV约束。这是通过将工作委托给BV实现来完成的。另一方面，BV实现不会使用JPA约束。
The JPA implementation will, if configured so, check BV constraints at pre-persist, pre-update, and pre-remove. This is done by delegating the work to the BV implementation. The BV implementation on the other hand will not use JPA constraints.
使用BV约束，例如 @NotNull 自动导致JPA约束，例如 @Column（nullable = false）被推荐给BV规范中的JPA实现，但不是官方规范的一部分，因此不可靠行为。
Using BV constrains such as @NotNull to automatically cause JPA constraints such as @Column(nullable=false) is recommended to the JPA implementation in the BV specification, but not part of the official specification and thus not reliable behaviour.
因此，我必须同时使用BV和JPA注释，即使它们可能具有相同的意思。
As a result I will have to use both BV and JPA annotations, even though they may have the same meaning.
参考文献
- Section 3.6 Bean Validation - JPA2 specification.
- Appendix D Java Persistence 2.0 integration - Bean validation specification.
PS：我会等人是否有y更正或添加到此，然后设置为首选答案。
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