public override void VisitAfter(WindowFuncExpr expr)
{
OrderBy orderBy = (OrderBy)_stack.Pop();
PartitionBy partitionBy = null;
if (expr.PartitionBy != null)
{
partitionBy = (PartitionBy)_stack.Pop();
}
Exprs arg = null;
if (expr.Arguments != null)
{
arg = (Exprs)_stack.Pop();
}
if (object.ReferenceEquals(expr.Arguments, arg) &&
object.ReferenceEquals(expr.PartitionBy, partitionBy) &&
object.ReferenceEquals(expr.OrderBy, orderBy))
{
_stack.Push(expr);
return;
}
var node = new WindowFuncExpr(expr.ServerName
, expr.DataBaseName
, expr.SchemaName
, expr.Name
, expr.Quantifier
, expr.HasWildcard
, arg
, partitionBy
, orderBy
, expr.Comments.Clone());
_stack.Push(node);
}
virtual public void VisitOnOver(WindowFuncExpr expr, int offset)
{
}
virtual public void VisitAfter(WindowFuncExpr expr)
{
}
virtual public void VisitBefore(WindowFuncExpr expr)
{
}
public void VisitOnOver(WindowFuncExpr expr, int offset)
{
_visitor.VisitOnOver(expr, offset);
}
public void VisitAfter(WindowFuncExpr expr)
{
_visitor.VisitAfter(expr);
}
public void VisitBefore(WindowFuncExpr expr)
{
_visitor.VisitBefore(expr);
}