来自docs:
MongoDB支持不超过100级的BSON文档嵌套。
但是,“为BSON文件嵌套”是什么意思?例如,如果我想实现Embedding All Comments in One Document(用于线程)
{
_id: ObjectId(...),
... lots of topic data ...
replies: [
{ posted: ISODateTime(...),
author: { id: ObjectId(...), name: 'Rick' },
text: 'This is so bogus ... ',
replies: [
{ author: { ... }, ... },
... ]
}
然后如果我想访问第101级评论,我不能这样做?
replies_1.0.replies_2.0.replies_3.0.replies_4....0.replies_101