- All Known Implementing Classes:
- UDAFPercentile.PercentileLongArrayEvaluator, UDAFPercentile.PercentileLongEvaluator, UDAFTestMax.MaxDoubleEvaluator, UDAFTestMax.MaxFloatEvaluator, UDAFTestMax.MaxIntEvaluator, UDAFTestMax.MaxLongEvaluator, UDAFTestMax.MaxShortEvaluator, UDAFTestMax.MaxStringEvaluator, UDAFWrongArgLengthForTestCase.UDAFWrongArgLengthForTestCaseEvaluator
public interface UDAFEvaluator
Interface that encapsulates the evaluation logic of a UDAF. One evaluator is
needed for every overloaded form of a UDAF .e.g max and min UDAFs would have
evaluators for integer, string and other types. On the other hand avg would
have an evaluator only for the double type.