org.axiondb.functions
Interface ScalarFunction

All Superinterfaces:

ConcreteFunction, Function, Selectable, Serializable

All Known Implementing Classes:

ABSFunction, AddFunction, AndFunction, ArithmeticFunction, AsciiFunction, Base64DecodeFunction, Base64EncodeFunction, BaseBooleanBranchFunction, BitAndFunction, BitOrFunction, CastAsFunction, CharFunction, CharToDateFunction, CoalesceFunction, ComparisonFunction, ConcatFunction, ContainsFunction, DateAddFunction, DateDiffFunction, DatePartFunction, DateToCharFunction, DifferenceFunction, DivideFunction, EqualFunction, ExistsFunction, GreaterThanFunction, GreaterThanOrEqualFunction, IfThenFunction, InFunction, InStringFunction, IsNotNullFunction, IsNullFunction, IsValidDateTimeFunction, LengthFunction, LessThanFunction, LessThanOrEqualFunction, LikeToRegexpFunction, Log10Function, LowerFunction, LPadFunction, LTrimFunction, MatchesFunction, ModFunction, MultiplyFunction, NotEqualFunction, NotExistsFunction, NotFunction, NotInFunction, NowFunction, OrFunction, ReplaceFunction, RoundFunction, RowNumFunction, RPadFunction, RTrimFunction, SignFunction, SoundexFunction, SoundsLikeFunction, SpaceFunction, SubstringFunction, SubtractFunction, TruncateFunction, UpperFunction

public interface ScalarFunction

extends ConcreteFunction

A ConcreteFunction that evaluates a single Row.

Version:

$Revision: 1.3 $ $Date: 2003/03/27 19:14:06 $

Method Summary

Object

evaluate(RowDecorator row)

Methods inherited from interface org.axiondb.functions.ConcreteFunction

isValid

Methods inherited from interface org.axiondb.Function

addArgument, getAlias, getArgument, getArgumentCount, getName, setAlias, setArgument

Methods inherited from interface org.axiondb.Selectable

getDataType, getLabel, setVariableContext

Method Detail

evaluate

public Object evaluate(RowDecorator row)
                throws AxionException

Specified by:

evaluate in interface Selectable

Throws:

AxionException