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<?php |
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namespace Mezon\PdoCrud; |
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use Mezon\Conf\Conf; |
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/** |
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* Class ConnectionTrait |
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* |
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* @package Mezon |
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* @subpackage PdoCrud |
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* @author Dodonov A.A. |
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* @version v.1.0 (2020/02/19) |
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* @copyright Copyright (c) 2020, aeon.org |
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*/ |
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/** |
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* Trait for getting connections |
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*/ |
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trait ConnectionTrait |
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{ |
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/** |
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* Connection to DB. |
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*/ |
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protected static $crud = false; |
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/** |
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* Method validates dsn fields |
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* |
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* @param string $connectionName |
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* Connectio name |
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*/ |
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protected function validateDsn(string $connectionName): void |
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{ |
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if (Conf::getConfigValue($connectionName . '/dsn') === false) { |
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throw (new \Exception($connectionName . '/dsn not set')); |
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} |
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if (Conf::getConfigValue($connectionName . '/user') === false) { |
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throw (new \Exception($connectionName . '/user not set')); |
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} |
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if (Conf::getConfigValue($connectionName . '/password') === false) { |
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throw (new \Exception($connectionName . '/password not set')); |
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} |
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} |
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/** |
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* Method returns true if the connection exists, false otherwise |
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* |
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* @param string $connectionName |
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* connection name |
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* @return bool true if the connection exists, false otherwise |
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*/ |
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protected function dsnExists(string $connectionName): bool |
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{ |
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try { |
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$this->validateDsn($connectionName); |
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return true; |
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} catch (\Exception $e) { |
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return false; |
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} |
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} |
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/** |
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* Contructing connection to database object |
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* |
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* @return PdoCrud connection object wich is no initialized |
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* @codeCoverageIgnore |
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*/ |
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protected function constructConnection(): PdoCrud |
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{ |
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return new PdoCrud(); |
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} |
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/** |
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* Method returns database connection. |
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* If you will pas array of connection names, then the first existing one will be returned |
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* |
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* @param string|array $connectionName |
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* Connectioт name or array of connection names. |
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* @return mixed connection |
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*/ |
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private function getConnectionScalar(string $connectionName = 'default-db-connection') |
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{ |
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$this->validateDsn($connectionName); |
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self::$crud = $this->constructConnection(); |
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self::$crud->connect( |
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[ |
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'dsn' => Conf::getConfigValue($connectionName . '/dsn'), |
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'user' => Conf::getConfigValue($connectionName . '/user'), |
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'password' => Conf::getConfigValue($connectionName . '/password') |
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]); |
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return self::$crud; |
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} |
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/** |
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* Method returns database connection. |
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* If you will pas array of connection names, then the first existing one will be returned |
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* |
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* @param string|array $connectionName |
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* Connectioт name or array of connection names. |
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* @return mixed connection |
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*/ |
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public function getConnection($connectionName = 'default-db-connection') |
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{ |
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if (self::$crud !== false) { |
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return self::$crud; |
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} |
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if (is_string($connectionName)) { |
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return $this->getConnectionScalar($connectionName); |
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} elseif (is_array($connectionName)) { |
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foreach ($connectionName as $name) { |
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if ($this->dsnExists($name)) { |
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return $this->getConnectionScalar($name); |
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} |
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} |
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throw (new \Exception('Connection with names: "' . implode(', ', $connectionName) . '" were not found')); |
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} else { |
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throw (new \Exception('Unsupported type for connection name')); |
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} |
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} |
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/** |
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* Method sets connection |
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* |
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* @param mixed $connection |
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133
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* - new connection or it's mock |
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134
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*/ |
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public function setConnection($connection): void |
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{ |
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self::$crud = $connection; |
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} |
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} |
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alexdodonov /
mezon-pdocrud
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