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<?php
/**
* TDbConnection class file
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link https://github.com/pradosoft/prado
* @license https://github.com/pradosoft/prado/blob/master/LICENSE
*/
namespace Prado\Data;
/**
* TDbNullConversionMode
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 3.0
*/
class TDbNullConversionMode extends \Prado\TEnumerable
{
/**
* No conversion is performed for null and empty values.
*/
public const Preserved = 'Preserved';
/**
* NULL is converted to empty string
*/
public const NullToEmptyString = 'NullToEmptyString';
/**
* Empty string is converted to NULL
*/
public const EmptyStringToNull = 'EmptyStringToNull';
}