org.axiondb.functions

Class CountFunction

public class CountFunction extends BaseAggregateFunction implements AggregateFunction, FunctionFactory

COUNT: an aggregate function returning the number of rows.

Version: $Revision: 1.9 $ $Date: 2005/04/24 21:33:11 $

Author: Rodney Waldhoff Chuck Burdick Ahimanikya Satapathy

Constructor Summary
CountFunction()
Method Summary
Objectevaluate(RowDecoratorIterator rows)
DataTypegetDataType()
ConcreteFunctionmakeNewInstance()

Constructor Detail

CountFunction

public CountFunction()

Method Detail

evaluate

public Object evaluate(RowDecoratorIterator rows)

getDataType

public DataType getDataType()

makeNewInstance

public ConcreteFunction makeNewInstance()