Use a Factory for Function Overloading

If a user-defined function must support multiple signatures, you must implement the corresponding factory interface:

UserDefinedFunctionAdapterFactory for plain functions

UserDefinedAggregationFunctionAdapterFactory for aggregate analytic functions

UserDefinedWindowFunctionAdapterFactory for window analytic functions

For more information on the advantages of user-defined function factories and examples. See the RAQL User-Defined Function API reference.