getCountByFilterEx method
- String correlationId,
- 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 function to filter items Return Future that receives a data count Throw error.