protected ColumnStrategy()
{
_dataAccessProvider = new DataAccessProviderFactory(Server.ProviderType);
_connection = _dataAccessProvider.CreateConnection(Server.ConnectionString);
_columns = new ColumnCollection();
_keys = new KeyCollection();
}
public override void Interpret(Context context)
{
Regex regex = new Regex(InputPattern,RegexOptions.Singleline);
MatchCollection matches = regex.Matches(context.Input);
foreach(Match match in matches)
{
string columnOutput = "";
string columnInput = match.Groups["column"].Value;
ColumnCollection columns = ((Table)Parameter).Columns;
ColumnCollection filteredColumns = new ColumnCollection();
foreach(Column column in columns)
{
if(IsValidColumn(column,match.Groups["selection"].Value.Trim()))
{
filteredColumns.Add(column);
}
}
foreach(Column column in filteredColumns)
{
string columnTemporaryText = columnInput;
RunExpressionsReplace(column, filteredColumns, ref columnTemporaryText);
columnOutput += columnTemporaryText;
}
string escapedString = Regex.Escape( match.Value );
context.Output = Regex.Replace(context.Input ,escapedString,columnOutput);
context.Input = context.Output;
}
}