com.pervasive.datarush.functions

Interface EvaluatorFactory

All Known Implementing Classes:

InputMappedFactory, MappedEvaluatorFactory, ReflectiveFactory, ResultMappedFactory

public interface EvaluatorFactory

A factory used to construct evaluators for ScalarValuedFunctions. A number of implementations are provided which cover common use cases.

An EvaluatorFactory is used as part of a function description to provide a mechanism for creating evaluators for associated function instances. Because descriptions are serialized within the framework, implementations of EvaluatorFactory must also be serializable as JSON.

See Also:

ScalarValuedFunction, ScalarFunctionDescriptor

Method Summary

Methods

Modifier and Type	Method and Description
FunctionEvaluator	contructEvaluator(ScalarSettable result, Object[] arguments) Construct a new evaluator for the associated function with the given arguments, bound to the specified output buffer.

Method Detail

contructEvaluator

FunctionEvaluator contructEvaluator(ScalarSettable result,
                                  Object[] arguments)

Construct a new evaluator for the associated function with the given arguments, bound to the specified output buffer.

Parameters:

result - the buffer to which the function result is written

arguments - the arguments to the function

Returns:

a new evaluator for the function