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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Db\Sql\Ddl\Constraint;
class Check extends AbstractConstraint
{
/**
* @var string|\Zend\Db\Sql\ExpressionInterface
*/
protected $expression;
/**
* {@inheritDoc}
*/
protected $specification = 'CHECK (%s)';
/**
* @param string|\Zend\Db\Sql\ExpressionInterface $expression
* @param null|string $name
*/
public function __construct($expression, $name)
{
$this->expression = $expression;
$this->name = $name;
}
/**
* {@inheritDoc}
*/
public function getExpressionData()
{
$newSpecTypes = [self::TYPE_LITERAL];
$values = [$this->expression];
$newSpec = '';
if ($this->name) {
$newSpec .= $this->namedSpecification;
array_unshift($values, $this->name);
array_unshift($newSpecTypes, self::TYPE_IDENTIFIER);
}
return [[
$newSpec . $this->specification,
$values,
$newSpecTypes,
]];
}
}