Mongodb更改文档字段名称

Question

I have an application that reads a JSON String(not generated by me) that contains a field with a '.' and converts it to BSON as such:

Document document = new Document(Document.parse(jsonString));

Calling collection.insertOne() is causing me problems as mentioned in What characters are NOT allowed in MongoDB field names? .

I'm now trying to change the field names within document that contain periods. Is there a way to iterate through the document and change the field names?

Answer 1

I would point you towards db.collection.update(), something like:

db.collection.update({*your_find_query*},{$rename:{*fields_to_rename*}},{multi:true})

By setting multi:true you will update all the documents that match the query criteria.

More info: http://docs.mongodb.org/manual/reference/method/db.collection.update/