getCountByFilterEx method

Future<int> getCountByFilterEx (
  1. String correlationId,
  2. Map<String, dynamic> filter
)
inherited

Gets a count of data items retrieved by a given filter.

This method shall be called by a public getCountByFilter method from child class that receives FilterParams and converts them into a filter function.

  • correlationId (optional) transaction id to trace execution through call chain.
  • filter (optional) a filter JSON object Return Future that receives a data list. Throw error