org.axiondb
Interface Function

All Superinterfaces:

Selectable, Serializable

All Known Subinterfaces:

AggregateFunction, ConcreteFunction, ScalarFunction

All Known Implementing Classes:

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

public interface Function

extends Selectable

A database function.

Version:

$Revision: 1.11 $ $Date: 2004/08/27 03:21:21 $

Method Summary

void	addArgument(Selectable arg) Append the given Selectableto my argument list.
String	getAlias() Returns the Alias name of this function.
Selectable	getArgument(int i) Returns the Selectableat the given index.
int	getArgumentCount() Returns the number of arguments in my argument list.
String	getName() Returns the cannonical name of this function.
void	setAlias(String alias) Set the Alias name of this function.
void	setArgument(int i, Selectable arg)

Methods inherited from interface org.axiondb.Selectable

evaluate, getDataType, getLabel, setVariableContext

Method Detail

addArgument

public void addArgument(Selectable arg)

Append the given Selectableto my argument list.

getAlias

public String getAlias()

Returns the Alias name of this function.

Specified by:

getAlias in interface Selectable

getArgument

public Selectable getArgument(int i)
                       throws IndexOutOfBoundsException

Returns the Selectableat the given index.

Throws:

IndexOutOfBoundsException - if there is no argument at the given index

getArgumentCount

public int getArgumentCount()

Returns the number of arguments in my argument list.

getName

public String getName()

Returns the cannonical name of this function.

Specified by:

getName in interface Selectable

setAlias

public void setAlias(String alias)

Set the Alias name of this function.

setArgument

public void setArgument(int i,
                        Selectable arg)