public override void VisitAfter(AggregateFuncExpr expr)
{
Expr arg2 = null;
if (expr.Argument2 != null)
{
arg2 = (Expr)_stack.Pop();
}
Expr arg1 = null;
if (expr.Argument1 != null)
{
arg1 = (Expr)_stack.Pop();
}
if (object.ReferenceEquals(expr.Argument1, arg1) &&
object.ReferenceEquals(expr.Argument2, arg2))
{
_stack.Push(expr);
return;
}
var node = new AggregateFuncExpr(expr.Name
, expr.Quantifier
, expr.Wildcard
, arg1, arg2
, expr.Comments.Clone());
_stack.Push(node);
}
public override void VisitAfter(AggregateFuncExpr expr)
{
if (IsPlaceHolderExpr(expr.Argument1))
{
expr.Argument1 = Place((PlaceHolderExpr)expr.Argument1);
}
if (IsPlaceHolderExpr(expr.Argument2))
{
expr.Argument2 = Place((PlaceHolderExpr)expr.Argument2);
}
}
virtual public void VisitAfter(AggregateFuncExpr expr)
{
}
virtual public void VisitBefore(AggregateFuncExpr expr)
{
}
public void VisitAfter(AggregateFuncExpr expr)
{
_visitor.VisitAfter(expr);
}
public void VisitBefore(AggregateFuncExpr expr)
{
_visitor.VisitBefore(expr);
}
public override void VisitBefore(AggregateFuncExpr expr)
{
// Expressionがサブクエリの場合、その中に集約関数が含まれていても
// Expressionは集約式ではない
this.ContainsAggregativeExpr = this.ContainsAggregativeExpr || _inSubQueryExp == 0;
}