java - 从 JDL 文件 jhipster 解析实体时出错

Question

我使用 JDL studio 创建文件没有错误，但是当我使用 jhipster cli 导入文件时出现以下错误:

Using JHipster version installed locally in current project's node_modules Executing jhipster:import-jdl ./thearthacker-jdl.jhOptions:The jdl is being parsed.events.js:182      throw er; // Unhandled 'error' event      ^Error: ERROR!Error while parsing entities from JDL    at Environment.error (E:\web_project\_PROJECT\thearthackers\node_modules\yeoman-environment\lib\environment.js:140:40)    at constructor.error (E:\web_project\_PROJECT\thearthackers\node_modules\generator-jhipster\generators\generator-base.js:1686:18)    at constructor.parseJDL (E:\web_project\_PROJECT\thearthackers\node_modules\generator-jhipster\generators\import-jdl\index.js:108:22)    at Object. (E:\web_project\_PROJECT\thearthackers\node_modules\yeoman-generator\lib\index.js:417:23)    at E:\web_project\_PROJECT\thearthackers\node_modules\run-async\index.js:25:25    at Promise ()    at E:\web_project\_PROJECT\thearthackers\node_modules\run-async\index.js:24:19    at E:\web_project\_PROJECT\thearthackers\node_modules\yeoman-generator\lib\index.js:418:9    at runCallback (timers.js:781:20)    at tryOnImmediate (timers.js:743:5)

and this is my JDL file:

entity Video {
    name String required,
    type String required,
    url String required,
    quality String,
   description String required,
    submissionDate ZonedDateTime required
}
entity Picture {
    name String required minlength(3),
    type String required,
    url String required,
    size String,
    description String,
    submissionDate ZonedDateTime required
}

entity Blog {
    name String required minlength(3),
}

entity Entry {
    title String required,
    content String required,
    date ZonedDateTime required
}

entity Tag {
    name String required minlength(2)
}


relationship ManyToMany {
    Entry{tag(name)} to Tag{entry}
}

relationship ManyToMany {
    Picture{tag(name)} to Tag{Picture}
}

relationship ManyToMany {
    Video{tag(name)} to Tag{Video}
}

relationship ManyToMany {
    Blog{tag(name)} to Tag{Blog}
}

relationship ManyToMany {
    User{tag(name)} to Tag{User}
}

relationship ManyToOne {
    Video{video} to User
}

relationship ManyToOne {
    Picture{video} to User
}

relationship ManyToOne {
    Blog{video} to User
}

relationship ManyToOne {
    Entry{video} to Blog
}

paginate Entry, Tag with infinite-scroll

dto * with mapstruct

有什么想法吗？

感谢您的帮助。

Answer 1

我刚刚尝试了您的 JDL，并收到此错误消息:

IllegalAssociationException: Relationships from User entity is not supported in the declaration between User and Tag.

请注意，我正在使用当前的开发分支，因此我收到了一条您可能没有的错误消息(您没有提供版本号，但最近已得到改进)。

这意味着您无法从用户实体建立关系，因为 JDL 无法修改它 - 这是特定于用户实体的。您可以找到更多信息on the relationships documentation .

对此有多种解决方案:您可以与用户建立一对一的关系，并通过 JDL 管理另一个实体。或者您可以手动修改 User 实体(有些人将其子类化并在子类上工作，以免更改 User)。