Package com.ezylang.evalex.functions

Class AbstractFunction

java.lang.Object

com.ezylang.evalex.functions.AbstractFunction

All Implemented Interfaces:

FunctionIfc

Direct Known Subclasses:

AbsFunction, AbstractMinMaxFunction, AcosFunction, AcosHFunction, AcosRFunction, AcotFunction, AcotHFunction, AcotRFunction, AsinFunction, AsinHFunction, AsinRFunction, Atan2Function, Atan2RFunction, AtanFunction, AtanHFunction, AtanRFunction, CeilingFunction, CoalesceFunction, CosFunction, CosHFunction, CosRFunction, CotFunction, CotHFunction, CotRFunction, CscFunction, CscHFunction, CscRFunction, DateTimeFormatFunction, DateTimeNewFunction, DateTimeNowFunction, DateTimeParseFunction, DateTimeTodayFunction, DateTimeToEpochFunction, DegFunction, DurationFromMillisFunction, DurationNewFunction, DurationParseFunction, DurationToMillisFunction, FactFunction, FloorFunction, IfFunction, Log10Function, LogFunction, NotFunction, RadFunction, RandomFunction, RoundFunction, SecFunction, SecHFunction, SecRFunction, SinFunction, SinHFunction, SinRFunction, SqrtFunction, StringContains, StringEndsWithFunction, StringFormatFunction, StringLeftFunction, StringLengthFunction, StringLowerFunction, StringMatchesFunction, StringRightFunction, StringSplitFunction, StringStartsWithFunction, StringSubstringFunction, StringTrimFunction, StringUpperFunction, SumFunction, SwitchFunction, TanFunction, TanHFunction, TanRFunction

public abstract class AbstractFunction
extends java.lang.Object
implements FunctionIfc

Abstract implementation of the FunctionIfc, used as base class for function implementations.

Field Summary

Fields

Modifier and Type	Field	Description
protected static java.math.BigDecimal	MINUS_ONE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractFunction()	Creates a new function and uses the FunctionParameter annotations to create the parameter definitions.

Method Summary

Modifier and Type	Method	Description
java.util.List<FunctionParameterDefinition>	getFunctionParameterDefinitions()	Returns the list of parameter definitions.
boolean	hasVarArgs()	Checks whether the function has a variable number of arguments parameter.
void	validatePreEvaluation(Token token, EvaluationValue... parameterValues)	Validates the evaluation parameters, called before the actual evaluation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.ezylang.evalex.functions.FunctionIfc

evaluate, getCountOfNonVarArgParameters, isParameterLazy

Field Detail

MINUS_ONE

protected static final java.math.BigDecimal MINUS_ONE

Constructor Detail

AbstractFunction

protected AbstractFunction()

Creates a new function and uses the FunctionParameter annotations to create the parameter definitions.

Method Detail

validatePreEvaluation

public void validatePreEvaluation(Token token,
                                  EvaluationValue... parameterValues)
                           throws EvaluationException

Description copied from interface: FunctionIfc

Validates the evaluation parameters, called before the actual evaluation.

Specified by:

validatePreEvaluation in interface FunctionIfc

Parameters:

token - The function token.

parameterValues - The parameter values

Throws:

EvaluationException - in case of any validation error

getFunctionParameterDefinitions

public java.util.List<FunctionParameterDefinition> getFunctionParameterDefinitions()

Description copied from interface: FunctionIfc

Returns the list of parameter definitions. Is never empty or null.

Specified by:

getFunctionParameterDefinitions in interface FunctionIfc

Returns:

The parameter definition list.

hasVarArgs

public boolean hasVarArgs()

Description copied from interface: FunctionIfc

Checks whether the function has a variable number of arguments parameter.

Specified by:

hasVarArgs in interface FunctionIfc

Returns:

true or false: