butler.sql.function
Interface NumericAggregateFunction

All Superinterfaces:

AggregateFunction, Function

All Known Implementing Classes:

Count, Sum

public interface NumericAggregateFunction
extends AggregateFunction

Interface for aggregate functions using numeric values.

Author:

Fredrik Bertilsson

Nested Class Summary

Nested classes/interfaces inherited from interface butler.sql.function.Function

Function.Call

Method Summary

java.lang.Double

calculate(java.util.Iterator i)

Methods inherited from interface butler.sql.function.Function

getName

Method Detail

calculate

java.lang.Double calculate(java.util.Iterator i)
                           throws java.lang.Exception

Throws:

java.lang.Exception