org.seasar.tuigwaa.database.function.aggregation
インタフェース 
IProjectionList
ProjectionFunction
クラス 
AbstractProjectionFunction
AggregationFunction
AvgProjectionFunction
CountDistinctProjectionFunction
DataTableProjectionList
GroupProjectionFunction
HibernateProjectionList
MaxProjectionFunction
MinProjectionFunction
RowcountProjectionFunction
SumProjectionFunction