org.axiondb.functions
Class DifferenceFunction

java.lang.Object
  org.axiondb.BaseSelectable
      org.axiondb.functions.BaseFunction
          org.axiondb.functions.SoundexFunction
              org.axiondb.functions.DifferenceFunction

All Implemented Interfaces:

java.io.Serializable, Function, FunctionFactory, ConcreteFunction, ScalarFunction, Selectable

public class DifferenceFunction
extends SoundexFunction
implements ScalarFunction, FunctionFactory

Version:

$Revision: 1.8 $ $Date: 2005/12/20 18:32:28 $

See Also:

Serialized Form

Field Summary

Fields inherited from class org.axiondb.BaseSelectable

_hash

Constructor Summary

DifferenceFunction()
Creates a new instance of Class

Method Summary

java.lang.Object	evaluate(RowDecorator row)
DataType	getDataType() StringType
boolean	isValid()
ConcreteFunction	makeNewInstance()

Methods inherited from class org.axiondb.functions.SoundexFunction

soundex

Methods inherited from class org.axiondb.functions.BaseFunction

addArgument, getArgument, getArgumentCount, setArgument, setVariableContext, toString

Methods inherited from class org.axiondb.BaseSelectable

getAlias, getLabel, getName, setAlias, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.axiondb.Function

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

Methods inherited from interface org.axiondb.Selectable

getLabel, setVariableContext

Constructor Detail

DifferenceFunction

public DifferenceFunction()

Creates a new instance of Class

Method Detail

makeNewInstance

public ConcreteFunction makeNewInstance()

Specified by:

makeNewInstance in interface FunctionFactory

Overrides:

makeNewInstance in class SoundexFunction

getDataType

public DataType getDataType()

StringType

Specified by:

getDataType in interface Selectable

Overrides:

getDataType in class SoundexFunction

evaluate

public java.lang.Object evaluate(RowDecorator row)
                          throws AxionException

Specified by:

evaluate in interface ScalarFunction

Specified by:

evaluate in interface Selectable

Overrides:

evaluate in class SoundexFunction

Throws:

AxionException

isValid

public boolean isValid()

Specified by:

isValid in interface ConcreteFunction

Overrides:

isValid in class SoundexFunction