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<?php |
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namespace MocOrm\Connection; |
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class ConnectionManager |
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{ |
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/** |
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* @Connection object is a of Connection |
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*/ |
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private $Connection; |
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/** |
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* @Connection array is all connections opened |
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*/ |
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private $connections = []; |
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/** |
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* @currentConnection object is the current connection |
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*/ |
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private $currentConnection; |
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/** |
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* @_instance object this instance |
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*/ |
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protected static $_instance; |
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/** |
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* @currentConnectionName string of the current connection name |
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*/ |
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private $_currentConnectionName; |
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/** |
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* @Config This is a singleton object for save all configs |
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*/ |
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private $Config; |
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/** |
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* Initialize the object or return this object if have value set in attribute $_instance |
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* @param \Closure $config |
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* @return ConnectionManager |
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*/ |
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public static function initialize($config = null) |
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{ |
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if (!self::$_instance) self::$_instance = new ConnectionManager(); |
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if (is_callable($config)) { |
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$config($_config = new Config()); |
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self::$_instance->Config = $_config; |
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} |
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return self::$_instance; |
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} |
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/** |
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* @param $connectionName String |
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* @return $this |
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* @throws \Exception if isn't an string |
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* @throws \Exception if isn't set |
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*/ |
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public static function open($connectionName) |
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{ |
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$instance = self::$_instance; |
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if (!is_string($connectionName) || empty($connectionName)) throw new \Exception("Invalid connection name."); |
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if (!$instance->hasConnection($connectionName)) throw new \Exception("The connection name $connectionName is not set."); |
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if ($instance->hasOpen($connectionName)) throw new \Exception('This connection is actived.'); |
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$instance->_currentConnectionName = $connectionName; |
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$configs = $instance->Config->getConnection($connectionName); |
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$instance->Connection = new Connection($configs); |
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$instance->connections[$connectionName] = $instance->Connection->setConnection(); |
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$instance->currentConnection = $instance->connections[$connectionName]; |
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if ($instance->currentConnection->getDriver() == 'pgsql') { |
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$instance->currentConnection->changeSchema($instance->currentConnection->getSchema()); |
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} |
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return $instance; |
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} |
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/** |
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* This get the current connection |
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* If not exists the current connection this use last setting |
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* @return Connection |
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* @throws \Exception if not exists connections set |
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*/ |
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public function current() |
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{ |
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if (empty($this->currentConnection)) { |
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$configs = ($this->Config) ? $this->Config->getConfigs() : null; |
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if (count($configs) == 0) throw new \Exception('No connections are available.'); |
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$default = $this->Config->getDefault(); |
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$name = is_null($default) ? |
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@end(array_keys($configs)) : |
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$this->Config->getDefault(); |
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self::open($name); |
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} |
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return $this->currentConnection; |
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} |
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/** |
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* Change current connection but this needed is set |
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* @param $connectionName |
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* @return mixed |
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* @throws \Exception if connection name isn't string |
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* @throws \Exception if connection name isn't set |
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* @throws \Exception if connection not actived |
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*/ |
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public static function change($connectionName, $open = false) |
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{ |
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$instance = self::initialize(); |
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if (!is_string($connectionName)) throw new \Exception("Invalid connection name."); |
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if (!$instance->hasConnection($connectionName)) throw new \Exception("The connection name $connectionName is not set."); |
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if (!$instance->hasOpen($connectionName)) { |
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if ($open) { |
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try { |
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self::open($connectionName); |
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} catch (\Exception $e) { |
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throw $e; |
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} |
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} else { |
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throw new \Exception("This connection isn't actived."); |
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} |
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} |
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$instance->_currentConnectionName = $connectionName; |
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$instance->currentConnection = $instance->connections[$connectionName]; |
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$instance->Connection = $instance->connections[$connectionName]; |
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return $instance; |
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} |
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/** |
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* All connections opened |
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* @return array All connections |
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* @throws \Exception This instance isnt't initialized |
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*/ |
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public function getAllActive() |
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{ |
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if (!$this->hasInstance()) throw new \Exception('This instance isnt\'t initialized'); |
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return $this->connections; |
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} |
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/** |
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* Get all connection string |
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* @return array if have connection but not have this method return null |
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*/ |
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1 |
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final public function getConfigs() |
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{ |
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1 |
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return $this->Config->getConfigs(); |
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} |
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/** |
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* Verify if connection has open |
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* @param $connectionName |
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* @return bool |
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*/ |
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private function hasOpen($connectionName) |
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{ |
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return array_key_exists($connectionName, $this->connections); |
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} |
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/** |
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* Verify if this is initialized |
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* @return bool |
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*/ |
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1 |
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private function hasInstance() |
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{ |
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1 |
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return !self::$_instance ? false : true; |
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} |
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/** |
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* Verify if has connection defined |
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* @param $connectionName |
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* @return bool |
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*/ |
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1 |
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private function hasConnection($connectionName) |
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{ |
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return array_key_exists( |
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$connectionName, |
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$this->Config->getConfigs() |
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); |
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} |
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} |
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This check marks private properties in classes that are never used. Those properties can be removed.