是否可以将 REST API“浅”功能与 Firebase 数据过滤查询参数一起使用？

Question

The documentation ( https://firebase.google.com/docs/database/rest/retrieve-data ) for using REST to retrieve Firebase data explicitly states that 'shallow cannot be used with any of the "filtering data" query parameters'. Here I am told that it is possible to run a shallow query with filters (eg limitToFirst, startAfter).

Running this:

import firebase_admin
from firebase_admin import credentials
from firebase_admin import db

databaseReference = db.reference("/")

snapshot = databaseReference.child("Bot Applications").order_by_child("status").equal_to("ACTIVE").limit_to_first(self.applicationKeyCollectionCount).get(etag=False, shallow=True)

or

snapshot = databaseReference.child("Bot Applications").order_by_key().limit_to_first(self.applicationKeyCollectionCount).get(etag=False, shallow=True)

or any other simplified variation of this query results in an error message like

AttributeError: 'Query' object has no attribute 'shallow'

or

TypeError: get() got an unexpected keyword argument 'shallow'

or

TypeError: get() got an unexpected keyword argument 'etag'

The code runs successfully when the query has all filters removed like

snapshot = databaseReference.child("Bot Applications").get(etag=False, shallow=True)

or without the shallow feature like

snapshot = databaseReference.child("Bot Applications").order_by_child("status").equal_to("ACTIVE").limit_to_first(self.applicationKeyCollectionCount).get()

Is there an efficient way to somehow run a shallow FRTDB query with filters?

Answer 1

As far as I know the REST API can filter on the data that it returns. So if you request a shallow result set, it can filter on keys only. That's also exactly what I do in the examples in my answer that you linked.

There is no way to do a shallow query and then filter on any of the properties under the keys that are returned.