public SelectColumn(TreeNode node)
{
TreeNode nd;
string s;
Name = TreeHelper.GetValue(node);
if (Name == "*")
{
Column_name = "*";
ColumnType = SelectColumnType._column;
return;
}
nd = node.Nodes[0];
nd = nd.Nodes[0];
//while (nd != null)
{
s = (TreeHelper.GetRuleName(nd));
switch (s)
{
case "Column_name": Column_name = TreeHelper.GetValue(nd); ColumnType = SelectColumnType._column; break;
case "Function_name":
{
string ss = TreeHelper.GetValue(nd.Parent);
ss = ss.Substring(0, ss.IndexOf("("));
Function_name = ss;
ColumnType = SelectColumnType._function;
Column_name = ss + GetHashCode();
Expr = TreeHelper.GetValue(nd.Parent);
break;
}
case "Expr":
{
Expr = TreeHelper.GetValue(nd.Parent); ColumnType = SelectColumnType._expr;
Column_name = "Expr" + GetHashCode();
break;
}
default: break;
}
//nd = nd.NextNode;
}
nd = node.Nodes[0].NextNode;
while (nd != null)
{
s = (TreeHelper.GetRuleName(nd));
switch (s)
{
case "Column_alias": Column_alias = TreeHelper.GetValue(nd); break;
default: break;
}
nd = nd.NextNode;
}
}
public SelectColumn(TreeNode node)
{
TreeNode nd;
string s;
Name = TreeHelper.GetValue(node);
if (Name == "*")
{
Column_name = "*";
ColumnType = SelectColumnType._column;
return;
}
nd = node.Nodes[0];
nd = nd.Nodes[0];
//while (nd != null)
{
s = (TreeHelper.GetRuleName(nd));
switch (s)
{
case "Column_name": Column_name = TreeHelper.GetValue(nd); ColumnType = SelectColumnType._column; break;
case "Function_name":
{
string ss = TreeHelper.GetValue(nd.Parent);
ss = ss.Substring(0, ss.IndexOf("("));
Function_name = ss;
ColumnType = SelectColumnType._function;
Column_name = ss + GetHashCode();
Expr=TreeHelper.GetValue(nd.Parent);
break;
}
case "Expr":
{
Expr = TreeHelper.GetValue(nd.Parent); ColumnType = SelectColumnType._expr;
Column_name = "Expr" + GetHashCode();
break;
}
default: break;
}
//nd = nd.NextNode;
}
nd = node.Nodes[0].NextNode;
while (nd != null)
{
s = (TreeHelper.GetRuleName(nd));
switch (s)
{
case "Column_alias": Column_alias = TreeHelper.GetValue(nd); break;
default: break;
}
nd = nd.NextNode;
}
}
