public TableSymbol MergeSymbols(TableSymbol other)
{
var symbol = new TableSymbol();
var compundTableColumns = new List <ISchemaColumn>();
foreach (var item in _tables)
{
symbol._tables.Add(item.Key, item.Value);
symbol._orders.Add(item.Key);
compundTableColumns.AddRange(item.Value.Item2.Columns);
}
foreach (var item in other._tables)
{
symbol._tables.Add(item.Key, item.Value);
symbol._orders.Add(item.Key);
compundTableColumns.AddRange(item.Value.Item2.Columns);
}
symbol._fullTableName = symbol._orders.Aggregate((a, b) => a + b);
symbol._fullTable = new DynamicTable(compundTableColumns.ToArray());
symbol._fullSchema = new TransitionSchema(symbol._fullTableName, symbol._fullTable);
return(symbol);
}
public TableSymbol MakeNullableIfPossible()
{
var symbol = new TableSymbol();
var compundTableColumns = new List <ISchemaColumn>();
foreach (var column in _fullTable.Columns)
{
compundTableColumns.Add(ConvertColumnToNullable(column));
}
foreach (var item in _tables)
{
var dynamicTable = new DynamicTable(item.Value.Item2.Columns.Select(c => ConvertColumnToNullable(c)).ToArray());
symbol._tables.Add(item.Key, new Tuple <ISchema, ISchemaTable>(item.Value.Item1, dynamicTable));
symbol._orders.Add(item.Key);
}
symbol._fullTableName = symbol._orders.Aggregate((a, b) => a + b);
symbol._fullTable = new DynamicTable(compundTableColumns.ToArray());
symbol._fullSchema = new TransitionSchema(symbol._fullTableName, symbol._fullTable);
return(symbol);
}