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<?php |
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/** |
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* vipnytt/RobotsTxtParser |
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* |
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* @link https://github.com/VIPnytt/RobotsTxtParser |
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* @license https://github.com/VIPnytt/RobotsTxtParser/blob/master/LICENSE The MIT License (MIT) |
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*/ |
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namespace vipnytt\RobotsTxtParser; |
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use vipnytt\RobotsTxtParser\Client\Cache; |
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use vipnytt\RobotsTxtParser\Client\Delay; |
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use vipnytt\RobotsTxtParser\Exceptions\DatabaseException; |
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/** |
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* Class Database |
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* |
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* @package vipnytt\RobotsTxtParser |
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*/ |
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class Database |
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{ |
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/** |
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* MySQL driver name |
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*/ |
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const DRIVER_MYSQL = 'mysql'; |
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/** |
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* Database handler |
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* @var \PDO |
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*/ |
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private $pdo; |
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/** |
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* @var string|null |
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*/ |
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private $driver; |
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/** |
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* @var Cache\ManageInterface|null |
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*/ |
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private $cache; |
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/** |
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* @var Delay\ManageInterface|null |
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*/ |
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private $delay; |
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/** |
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* Database constructor. |
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* |
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* @param \PDO $pdo |
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*/ |
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public function __construct(\PDO $pdo) |
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{ |
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$this->pdo = $pdo; |
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$this->driver = $this->pdo->getAttribute(\PDO::ATTR_DRIVER_NAME); |
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$this->pdo->setAttribute(\PDO::ATTR_CASE, \PDO::CASE_NATURAL); |
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$this->pdo->setAttribute(\PDO::ATTR_ORACLE_NULLS, \PDO::NULL_NATURAL); |
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$this->initialize(); |
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} |
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/** |
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* Driver special treatment |
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* |
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* @return int|bool |
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*/ |
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private function initialize() |
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{ |
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switch ($this->driver) { |
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case self::DRIVER_MYSQL: |
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return $this->pdo->exec('SET NAMES utf8;'); |
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} |
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return true; |
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} |
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/** |
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* Cache manager |
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* |
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* @return Cache\ManageInterface |
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* @throws DatabaseException |
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*/ |
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public function cache() |
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{ |
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if ($this->cache !== null) { |
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return $this->cache; |
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} |
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switch ($this->driver) { |
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case self::DRIVER_MYSQL: |
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return $this->cache = new Cache\MySQL\Manage($this->pdo); |
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} |
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throw new DatabaseException('Unsupported PDO driver.'); |
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} |
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/** |
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* Delay manager |
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* |
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* @return Delay\ManageInterface |
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* @throws DatabaseException |
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*/ |
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public function delay() |
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{ |
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if ($this->delay !== null) { |
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return $this->delay; |
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} |
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switch ($this->driver) { |
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case self::DRIVER_MYSQL: |
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return $this->delay = new Delay\MySQL\Manage($this->pdo); |
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} |
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throw new DatabaseException('Unsupported PDO driver.'); |
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} |
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} |
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VIPnytt /
RobotsTxtParser
