protected virtual DbFunctionAggregate VisitFunctionAggregate(DbFunctionAggregate aggregate)
{
var result = aggregate;
if (aggregate != null)
{
var newFunction = VisitFunction(aggregate.Function);
var newArguments = VisitExpressionList(aggregate.Arguments);
Debug.Assert(newArguments.Count == 1, "Function aggregate had more than one argument?");
if (!ReferenceEquals(aggregate.Function, newFunction)
||
!ReferenceEquals(aggregate.Arguments, newArguments))
{
if (aggregate.Distinct)
{
result = CqtBuilder.AggregateDistinct(newFunction, newArguments[0]);
}
else
{
result = CqtBuilder.Aggregate(newFunction, newArguments[0]);
}
}
}
return(result);
}