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<?php |
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declare(strict_types=1); |
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namespace App\Component\Db; |
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use ArrayAccess; |
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use Countable; |
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use PDO; |
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/** |
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* Pool is a storage to store object identified by a string key |
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*/ |
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class Pool implements ArrayAccess, Countable |
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{ |
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/** |
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* connections |
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* |
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* @var array |
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*/ |
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private $connections = []; |
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/** |
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* Assigns a value to the specified offset |
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* |
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* @param string $connexionId |
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* @param PDO $connection |
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* @return void |
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*/ |
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public function offsetSet($connexionId, $connection) |
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{ |
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if ($this->valid($connexionId, $connection)) { |
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$this->connections[$connexionId] = $connection; |
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} |
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} |
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/** |
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* Whether or not an offset exists |
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* |
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* @param string $connexionId |
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* @return boolean |
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*/ |
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public function offsetExists($connexionId) |
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{ |
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return isset($this->connections[$connexionId]); |
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} |
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/** |
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* Unsets an offset |
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* |
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* @param string $connexionId |
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* @return void |
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*/ |
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public function offsetUnset($connexionId) |
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{ |
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if ($this->offsetExists($connexionId)) { |
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unset($this->connections[$connexionId]); |
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} |
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} |
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/** |
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* Returns the value at specified offset |
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* |
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* @param string $connexionId |
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* @return PDO | null |
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*/ |
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public function offsetGet($connexionId) |
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{ |
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return $this->offsetExists($connexionId) |
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? $this->connections[$connexionId] |
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: null; |
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} |
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/** |
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* return number of connections |
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* |
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* @return integer |
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*/ |
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public function count() |
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{ |
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return count($this->connections); |
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} |
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/** |
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* return true id connectionId is not null and is string |
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* and connection is object |
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* |
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* @param string $connexionId |
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* @param PDO | null $connection |
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* @return boolean |
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*/ |
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protected function valid($connexionId, $connection): bool |
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{ |
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return (!is_null($connexionId) |
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&& is_string($connexionId) |
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&& is_object($connection)); |
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} |
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} |
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pierre-fromager /
nymfonya
