休眠:@AuditTable和@AuditJoinTable有什么区别 [英] Hibernate: what's the difference between @AuditTable and @AuditJoinTable
问题描述
我有一个冬眠的问题:@AuditTable和@AuditJoinTable有什么区别?它们的用例分别是什么?
I have a hibernate question: what's the difference between @AuditTable and @AuditJoinTable and what are the use cases for each of these?
推荐答案
@AuditTable
@AuditTable
第7章.生成的表及其内容
Chapter 7. Generated tables and their content
对于每个被审计实体(即，对于至少包含以下内容的每个实体一个审核字段)，则创建一个审核表.默认情况下，审核表的名称是通过在原始名称后添加"_AUD"后缀来创建的名称，但是可以通过指定其他后缀/前缀来覆盖(请参见第3章，配置)，或者使用@AuditTable批注.
For each audited entity (that is, for each entity containing at least one audited field), an audit table is created. By default, the audit table's name is created by adding a "_AUD" suffix to the original name, but this can be overriden by specifing a different suffix/prefix (see Chapter 3, Configuration) or on a per-entity basis using the @AuditTable annotation.
审核表具有以下字段:
id(如果使用，则可以多于一列嵌入式或多个ID)
id of the original entity (this can be more then one column, if using an embedded or multiple id)
修订号-整数
修订类型-一个小整数
原始实体的审核字段
@AuditJoinTable
@AuditJoinTable
9.3.@ OneToMany + @ JoinColumn
9.3. @OneToMany+@JoinColumn
使用这两个注释映射集合时，Hibernate不会生成联接表.但是，Envers必须这样做，因此当您阅读相关实体具有的修订时更改，您不会得到错误的结果.
When a collection is mapped using these two annotations, Hibernate doesn't generate a join table. Envers, however, has to do this, so that when you read the revisions in which the related entity has changed, you don't get false results.
为了能够命名附加的联接表，有一个特殊的注释:@AuditJoinTable，其语义与JPA相似@JoinTable.
To be able to name the additional join table, there is a special annotation: @AuditJoinTable, which has similar semantics to JPA's @JoinTable.
此外，@ AuditTable适用于@Target(value = TYPE)，而@AuditJoinTable适用于@Target(value = {FIELD，METHOD}).
Moreover @AuditTable applies on @Target(value=TYPE) while @AuditJoinTable on @Target(value={FIELD,METHOD}).
@AuditJoinTable: https://docs.jboss.org/hibernate/orm/4.2/javadocs/org/hibernate/envers/AuditJoinTable.html
@AuditJoinTable : https://docs.jboss.org/hibernate/orm/4.2/javadocs/org/hibernate/envers/AuditJoinTable.html
@AuditTable :https://docs.jboss.org/hibernate/orm/4.2/javadocs/org/hibernate/envers/AuditTable.html#annotation_type_required_element_summary
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