protected virtual DbAggregate VisitAggregate(DbAggregate aggregate)
{
// Currently only function or group aggregate are possible
DbFunctionAggregate functionAggregate = aggregate as DbFunctionAggregate;
if (functionAggregate != null)
{
return(VisitFunctionAggregate(functionAggregate));
}
DbGroupAggregate groupAggregate = (DbGroupAggregate)aggregate;
return(VisitGroupAggregate(groupAggregate));
}
protected virtual DbGroupAggregate VisitGroupAggregate(DbGroupAggregate aggregate)
{
DbGroupAggregate result = aggregate;
if (aggregate != null)
{
IList <DbExpression> newArguments = this.VisitExpressionList(aggregate.Arguments);
Debug.Assert(newArguments.Count == 1, "Group aggregate had more than one argument?");
if (!object.ReferenceEquals(aggregate.Arguments, newArguments))
{
result = CqtBuilder.GroupAggregate(newArguments[0]);
}
}
return(result);
}