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<?php |
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namespace ntentan\nibii; |
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use ntentan\utils\Text; |
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/** |
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* A DriverAdaptr is a generic database adapter. |
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* This adapter implements a lot of its operations through the atiaa library. |
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* Driver specific implementation of this class only handle the conversion of |
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* data types from the native datatypes of the database to the generic types |
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* used in the nibii library. |
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*/ |
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abstract class DriverAdapter |
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{ |
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protected $settings; |
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protected $data; |
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private static $defaultSettings; |
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private $insertQuery; |
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private $updateQuery; |
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private $modelInstance; |
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/** |
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* An instance of an atiaa driver. |
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* @var \ntentan\atiaa\Driver |
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*/ |
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private static $db; |
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protected $queryEngine; |
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public function setSettings($settings) |
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{ |
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$this->settings = $settings; |
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} |
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public function setData($data) |
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{ |
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$this->data = $data; |
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} |
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/** |
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* Convert datatypes from the database system's native type to a generic type |
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* supported by nibii. |
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* |
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* @param string $nativeType The native datatype |
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* @return string The generic datatype for use in nibii. |
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*/ |
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abstract public function mapDataTypes($nativeType); |
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/** |
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* |
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*/ |
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public function init() |
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{ |
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if(self::$db == null) { |
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self::$db = \ntentan\atiaa\Driver::getConnection($this->settings); |
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self::$db->setCleanDefaults(true); |
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try { |
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self::$db->getPDO()->setAttribute(\PDO::ATTR_AUTOCOMMIT, false); |
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} catch (\PDOException $e) { |
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// Just do nothing for drivers which do not allow turning off autocommit |
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} |
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} |
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} |
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/** |
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* |
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* |
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* @param type $parameters |
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* @return type |
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*/ |
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public function select($parameters) |
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{ |
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$result = self::$db->query( |
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$this->getQueryEngine()->getSelectQuery($parameters), |
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$parameters->getBoundData() |
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); |
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if ($parameters->getFirstOnly() && isset($result[0])) { |
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$result = $result[0]; |
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} |
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return $result; |
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} |
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public function count($parameters) |
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{ |
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$result = self::$db->query( |
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$this->getQueryEngine()->getCountQuery($parameters), |
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$parameters->getBoundData() |
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); |
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return $result[0]['count']; |
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} |
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private function initInsert() |
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{ |
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$this->insertQuery = $this->getQueryEngine() |
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->getInsertQuery($this->modelInstance); |
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} |
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private function initUpdate() |
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{ |
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$this->updateQuery = $this->getQueryEngine() |
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->getUpdateQuery($this->modelInstance); |
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} |
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public function insert($record) |
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{ |
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if($this->insertQuery === null) { |
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$this->initInsert(); |
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} |
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return self::$db->query($this->insertQuery, $record); |
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} |
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public function update($record) |
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{ |
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if($this->updateQuery === null) { |
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$this->initUpdate(); |
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} |
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return self::$db->query($this->updateQuery, $record); |
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} |
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public function bulkUpdate($data, $parameters) |
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{ |
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return self::$db->query( |
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$this->getQueryEngine()->getBulkUpdateQuery($data, $parameters), |
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array_merge($data, $parameters->getBoundData()) |
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); |
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} |
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public function delete($parameters) |
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{ |
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return self::$db->query( |
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$this->getQueryEngine()->getDeleteQuery($parameters), |
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$parameters->getBoundData() |
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); |
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} |
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public function describe($model, $relationships) |
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{ |
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return new ModelDescription( |
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$this->getDriver()->describeTable($table)[$table], |
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$relationships, function($type) { return $this->mapDataTypes($type); } |
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); |
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} |
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/** |
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* Set the settings used for creating default datastores. |
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* @param array $settings |
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*/ |
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public static function setDefaultSettings($settings) |
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{ |
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self::$defaultSettings = $settings; |
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} |
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public static function getDefaultInstance() |
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{ |
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if (self::$defaultSettings['driver']) { |
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$class = "\\ntentan\\nibii\\adapters\\" . Text::ucamelize(self::$defaultSettings['driver']) . "Adapter"; |
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$instance = new $class(); |
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$instance->setSettings(self::$defaultSettings); |
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$instance->init(); |
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} else { |
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throw new \Exception("No datastore specified"); |
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} |
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return $instance; |
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} |
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/** |
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* |
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* @return \ntentan\nibii\QueryEngine |
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*/ |
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private function getQueryEngine() |
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{ |
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if ($this->queryEngine === null) { |
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$this->queryEngine = new QueryEngine(); |
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$this->queryEngine->setDriver(self::$db); |
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} |
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return $this->queryEngine; |
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} |
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/** |
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* |
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* @return \ntentan\atiaa\Driver |
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*/ |
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public function getDriver() |
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{ |
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return self::$db; |
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} |
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public static function reset() |
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{ |
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if(self::$db !== null) { |
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self::$db->disconnect(); |
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self::$db = null; |
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} |
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} |
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public function setModel($model) |
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{ |
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$this->modelInstance = $model; |
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} |
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} |
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Our type inference engine in quite powerful, but sometimes the code does not provide enough clues to go by. In these cases we request you to add a
@return
annotation as described here.