public function explain($query)
{
if (!$query['explainable']) {
return false;
}
try {
return $this->connection->executeQuery('EXPLAIN ' . $query['sql'], $query['params'], isset($query['types']) ? $query['types'] : [])->fetchAll(\PDO::FETCH_ASSOC);
} catch (\Exception $e) {
return false;
}
}
/**
* Execute the query as select, update or delete.
*
* @param string $type
* @return mixed
*/
protected function executeQuery($type = 'select')
{
switch ($type) {
case 'update':
$sql = $this->getSQLForUpdate();
break;
case 'delete':
$sql = $this->getSQLForDelete();
break;
default:
$sql = $this->getSQLForSelect();
break;
}
if ($type == 'select') {
return $this->connection->executeQuery($sql, $this->params, $this->guessParamTypes($this->params));
} else {
return $this->connection->executeUpdate($sql, $this->params, $this->guessParamTypes($this->params));
}
}
/**
* {@inheritdoc}
*/
public function write($id, $data)
{
try {
$params = ['id' => $id, 'data' => base64_encode($data), 'time' => date('Y-m-d H:i:s')];
if (null !== ($sql = $this->getMergeSql())) {
$this->connection->executeQuery($sql, $params);
return true;
}
$this->connection->beginTransaction();
try {
$this->connection->delete($this->table, ['id' => $id]);
$this->connection->insert($this->table, $params);
$this->connection->commit();
} catch (ConnectionException $e) {
$this->connection->rollback();
throw $e;
}
} catch (\PDOException $e) {
throw new \RuntimeException(sprintf('PDOException was thrown when trying to write the session data: %s', $e->getMessage()), 0, $e);
}
return true;
}
/**
* Sets an option value.
*
* @param string $name
* @param mixed $value
* @param boolean $autoload
* @throws \InvalidArgumentException
*/
public function set($name, $value, $autoload = null)
{
$name = trim($name);
if (empty($name)) {
throw new \InvalidArgumentException('Empty option name given.');
}
if (in_array($name, $this->protected)) {
throw new \InvalidArgumentException(sprintf('"%s" is a protected option and may not be modified.', $name));
}
if (!$this->connection->isConnected()) {
throw new \RuntimeException('Database is not connected.');
}
$old_value = $this->get($name);
if ($value !== $old_value) {
$this->options[$name] = $value;
$data = ['name' => $name, 'value' => json_encode($value)];
if ($autoload !== null) {
$data['autoload'] = $autoload ? '1' : '0';
}
if ($this->connection->getDatabasePlatform() instanceof MySqlPlatform) {
if ($autoload === null) {
$query = "INSERT INTO {$this->table} (name, value) VALUES (:name, :value) ON DUPLICATE KEY UPDATE value = :value";
} else {
$query = "INSERT INTO {$this->table} (name, value, autoload) VALUES (:name, :value, :autoload) ON DUPLICATE KEY UPDATE value = :value, autoload = :autoload";
}
$this->connection->executeQuery($query, $data);
} elseif (!$this->connection->update($this->table, $data, compact('name'))) {
$this->connection->insert($this->table, $data);
}
$this->cache->delete($this->prefix . (isset($this->autoload[$name]) ? 'Autoload' : $name));
}
if (isset($this->ignore[$name])) {
unset($this->ignore[$name]);
$this->cache->save($this->prefix . 'Ignore', $this->ignore);
}
}