MongoChangeStreamMBS.Constructor   Private

MongoChangeStreamMBS.ErrorDocument(byref ReplyJSON as String) as Boolean

Similar to ErrorDocument in MongoCursorMBS if the error has occurred client-side then the reply will be set to an empty BSON document. If the error occurred server-side, reply is set to the server’s reply document.

Provides the reply from server about the error.

Returns a boolean indicating if there was an error.

MongoChangeStreamMBS.NextChange(byref RecordJSON as String) as Boolean

Dim pipeline As String = "{}"
Dim stream As MongoChangeStreamMBS = Collection.Watch(pipeline)

// now do inserts

// and now query changes
Dim changeJSON As String

While stream.NextChange(changeJSON)
  
  MessageBox changeJSON
  
Wend

This will block for a maximum of maxAwaitTimeMS milliseconds as specified in the options when created, or the default timeout if omitted. Data may be returned before the timeout. If no data is returned this function returns false.

RecordJSON: The location for the resulting document.

This function returns true if a valid bson document was read from the stream. Otherwise, false if there was an error or no document was available.

Raises exception in case of error.

MongoChangeStreamMBS.StreamResumeToken as String

Returns "" if no resume token is available. This is possible if the change stream has not been iterated and neither resumeAfter nor startAfter options were specified in the watch function.