|
public Add ( string name, |
||
| name | string | |
| fragment | ||
| return | void | |
protected InputFragment VisitInputExpression(DbExpression e, string name, TypeUsage type)
{
SqlFragment f = e.Accept(this);
Debug.Assert(f is InputFragment);
InputFragment inputFragment = f as InputFragment;
inputFragment.Name = name;
if (inputFragment is TableFragment && type != null)
{
(inputFragment as TableFragment).Type = type;
}
SelectStatement select = inputFragment as SelectStatement;
if (name != null)
{
if (select != null && !select.IsWrapped)
{
scope.Add(name, select.From);
}
else
{
scope.Add(name, inputFragment);
}
}
return(inputFragment);
}
protected InputFragment VisitInputExpression(DbExpression e, string name, TypeUsage type)
{
SqlFragment f = e.Accept(this);
Debug.Assert(f is InputFragment);
InputFragment inputFragment = f as InputFragment;
inputFragment.Name = name;
TryFusingSelect(inputFragment);
if (inputFragment is TableFragment && type != null)
{
(inputFragment as TableFragment).Type = type;
}
if ((inputFragment is SelectStatement) && ((inputFragment as SelectStatement).From is TableFragment))
{
((inputFragment as SelectStatement).From as TableFragment).Type = type;
}
if (name != null)
{
scope.Add(name, inputFragment);
}
return(inputFragment);
}
public override void Wrap(Scope scope)
{
base.Wrap(scope);
// now we need to add default columns if necessary
if (Columns.Count == 0)
{
AddDefaultColumns(scope);
}
// next we need to remove child extents of the select from scope
if (Name != null)
{
scope.Remove(this);
scope.Add(Name, this);
}
}
void AddDefaultColumns(Scope scope)
{
if (columnHash == null)
{
columnHash = new Dictionary <string, ColumnFragment>();
}
List <ColumnFragment> columns = GetDefaultColumnsForFragment(From);
bool Exists = false;
if (From is TableFragment && scope.GetFragment((From as TableFragment).Table) == null)
{
scope.Add((From as TableFragment).Table, From);
Exists = true;
}
foreach (ColumnFragment column in columns)
{
// first we need to set the input for this column
InputFragment input = scope.FindInputFromProperties(column.PropertyFragment);
column.TableName = input.Name;
// then we rename the column if necessary
if (columnHash.ContainsKey(column.ColumnName.ToUpper()))
{
column.ColumnAlias = MakeColumnNameUnique(column.ColumnName);
columnHash.Add(column.ColumnAlias, column);
}
else
{
columnHash.Add(column.ColumnName.ToUpper(), column);
}
Columns.Add(column);
}
if (From is TableFragment && Exists)
{
scope.Remove((From as TableFragment).Table, From);
}
}
void AddDefaultColumns(Scope scope)
{
if (columnHash == null)
columnHash = new Dictionary<string, ColumnFragment>();
List<ColumnFragment> columns = GetDefaultColumnsForFragment(From);
bool Exists = false;
if (From is TableFragment && scope.GetFragment((From as TableFragment).Table) == null)
{
scope.Add((From as TableFragment).Table, From);
Exists = true;
}
foreach (ColumnFragment column in columns)
{
// first we need to set the input for this column
InputFragment input = scope.FindInputFromProperties(column.PropertyFragment);
column.TableName = input.Name;
// then we rename the column if necessary
if (columnHash.ContainsKey(column.ColumnName.ToUpper()))
{
column.ColumnAlias = MakeColumnNameUnique(column.ColumnName);
columnHash.Add(column.ColumnAlias, column);
}
else
columnHash.Add(column.ColumnName.ToUpper(), column);
Columns.Add(column);
}
if (From is TableFragment && Exists)
{
scope.Remove(From);
}
}
public override void Wrap(Scope scope)
{
base.Wrap(scope);
// now we need to add default columns if necessary
if (Columns.Count == 0)
AddDefaultColumns(scope);
// next we need to remove child extents of the select from scope
if (Name != null)
{
scope.Remove(this);
scope.Add(Name, this);
}
}