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<?php
/**
* TDbConnection class file
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2014 PradoSoft
* @license http://www.pradosoft.com/license/
* @package Prado\Data
*/
namespace Prado\Data;
/**
* TDbNullConversionMode
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package Prado\Data
* @since 3.0
*/
class TDbNullConversionMode extends TEnumerable
{
/**
* No conversion is performed for null and empty values.
*/
const Preserved='Preserved';
/**
* NULL is converted to empty string
*/
const NullToEmptyString='NullToEmptyString';
/**
* Empty string is converted to NULL
*/
const EmptyStringToNull='EmptyStringToNull';
}
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