org.axiondb.functions

Class DatePartFunction

public class DatePartFunction extends BaseFunction implements ScalarFunction, FunctionFactory

Syntax: DatePart(date-part, date-src) or EXTRACT(date-part FROM date-src)

Version: $Revision: 1.7 $ $Date: 2005/05/02 22:28:41 $

Author: Jonathan Giron

Constructor Summary
DatePartFunction()
Creates a new instance of Class
Method Summary
Objectevaluate(RowDecorator row)
Returns String representation of requested portion of given timestamp.
DataTypegetDataType()
booleanisValid()
ConcreteFunctionmakeNewInstance()

Constructor Detail

DatePartFunction

public DatePartFunction()
Creates a new instance of Class

Method Detail

evaluate

public Object evaluate(RowDecorator row)
Returns String representation of requested portion of given timestamp.
Valid parts are {'day', 'month', 'year', 'second', 'millisecond', 'minute', 'hour', 'week', 'quarter'}

getDataType

public DataType getDataType()
DataType

isValid

public boolean isValid()

makeNewInstance

public ConcreteFunction makeNewInstance()