SubscribeQuery - unexpected document path piece

[Autoneer]

My subscribequery

  cCollectionID := 'users';
  QueryStr := TStructuredQuery.CreateForCollection(cCollectionID,true);
  fConfig.Database.SubscribeQuery(QueryStr, OnChangedColDocument,
    OnDeletedColDocument,['users', fuid,'bookings','']);

returns the following message?

"targetChange": { "targetChangeType": "REMOVE", "targetIds": [ 2 ], "cause": { "code": 3, "message": "Unexpected document path piece: /bookings/"

However this Get works 100%

    fconfig.Database.Get(['users', fuid,'bookings',''],nil,
      OnFirestoreGetList, OnFirestoreError);

[SchneiderInfosystems]

Check this solution:

  fDatabase.SubscribeQuery(TStructuredQuery.CreateForCollection('', true),
    OnFSChangedDocInCollection, OnFSDeletedDocCollection,
    ['users', fuid,'bookings']);

Thank you for your short feedback and a star, if you like this library.

[Autoneer]

No it did not fix the problem

  fConfig.Database.SubscribeQuery(TStructuredQuery.CreateForCollection('',true),
  OnChangedColDocument,  OnDeletedColDocument,
  ['users', fuid, 'bookings']);

Only difference between messages is the / after bookings

"targetChange": { "targetChangeType": "REMOVE", "targetIds": [ 2 ], "cause": { "code": 3, "message": "Unexpected document path piece: /bookings"

[Autoneer]

This is the simple StartListener procedure

procedure TfmxMain.StartListener;
begin
  fConfig.Database.SubscribeQuery(TStructuredQuery.CreateForCollection('',true),
  OnChangedColDocument,  OnDeletedColDocument,
  ['users', fuid, 'bookings']);

  fConfig.Database.StartListener(OnStopListening, OnListenerError,
    OnAuthRevoked, OnConnectionStateChange);
end;

[SchneiderInfosystems]

I have analyzed the question even more deeply. Try the following

  fDatabase.SubscribeQuery(TStructuredQuery.CreateForCollection('bookings', true),
    OnFSChangedDocInCollection, OnFSDeletedDocCollection,
    ['users', fuid]);

I will add the ability to listen for sub-collections in the demo application.

[SchneiderInfosystems]

Check also the Firestore Listener tab in the DemoFB4D App from the newest commit for V1.3.1.438.

[Autoneer]

Fantastic thanks for the feedback Christopher,

It works if you set IncludesDescendants parameter to false in the StructuredQuery.

However for your information, if you set it to True as per your example I get the following message

"'all_descendants' in CollectionSelector with document parent is not supported by real-time queries."

Thank you again it solved my problem :-)

[SchneiderInfosystems]

Correct, IncludesDescendants must be set to false.

Unfortunately, the Firestore does not support listening to changes in nested collections.

To monitor all documents in the users/<fuid>/bookings/*subcollection, you need this query:

  fDatabase.SubscribeQuery(TStructuredQuery.CreateForCollection('bookings'),
    OnFSChangedDocInCollection, OnFSDeletedDocCollection, ['users', fuid]);