public DatabaseDataReader(string connStrName, ADataReaderParams readerParams, ACounterReader counterReader)
{
_params = readerParams as DatabaseDataReaderParams;
_counterReader = counterReader as CounterReader;
CheckParams(_params);
_container = new FieldsContainer();
_db = Database.OpenConnection(connStrName);
}
public static INotificationDataReader Prepare(ConfigManager.Models.Reader reader, ConfigManager.ConfigManager configManager)
{
var databaseDataReaderParams = new DatabaseDataReaderParams {
LogicalStorage = reader.LogicalName, TableName = reader.AdditionalParams.TableName, InitialCounter = reader.InitialCounter, MessageTypeColumnName = reader.AdditionalParams.MessageTypeColumnName, ColumnsNames = reader.ColumnNames
};
var setCounterReader = new Reader(configManager, reader.ReaderId);
return(new DatabaseDataReader.DatabaseDataReader(reader.ConnectionString, databaseDataReaderParams, setCounterReader));
}
private void CheckParams(DatabaseDataReaderParams p)
{
if (p == null)
{
throw new ArgumentNullException(nameof(p));
}
if (string.IsNullOrEmpty(p.TableName))
{
throw new ArgumentNullException($"{nameof(p.TableName)} is empty");
}
if (!p.ColumnsNames.Any())
{
throw new ArgumentException("Column doesn't exist!");
}
}
public INotificationDataReader Prepare(ConfigManager.Models.Reader reader, ConfigManager.ConfigManager configManager)
{
var databaseDataReaderParams = new DatabaseDataReaderParams
{
LogicalStorage = reader.LogicalName,
Schema = reader.ReaderAdditionalParams.Schema ?? "dbo",
TableName = reader.ReaderAdditionalParams.TableName,
OrderByColumnName = reader.ReaderAdditionalParams.OrderByColumnName,
InitialCounter = reader.InitialCounter,
MessageTypeColumnName = reader.ReaderAdditionalParams.MessageTypeColumnName,
ColumnsNames = reader.ColumnNames
};
var setCounterReader = new CounterReader(configManager, reader.ReaderId);
var notificationDataReaderDecorator = new NotificationDataReaderDecorator(
new DatabaseDataReader.DatabaseDataReader(reader.ConnectionString, databaseDataReaderParams, setCounterReader), reader.ReaderId);
return(notificationDataReaderDecorator);
}