/**
* Performs the actual DB query of a SQL statement.
*
* @param string $method method of PDOStatement to be called
* @param integer $fetchMode the result fetch mode. Please refer to [PHP manual](http://www.php.net/manual/en/function.PDOStatement-setFetchMode.php)
* for valid fetch modes. If this parameter is null, the value set in {@see \rock\db\Command::$fetchMode} will be used.
* @return mixed the method execution result
* @throws DbException if the query causes any problem
*/
protected function queryInternal($method, $fetchMode = null)
{
$connection = $this->connection;
$rawSql = $this->getRawSql();
$token = ['dsn' => $connection->dsn, 'sql' => $rawSql, 'valid' => true, 'cache' => false];
Trace::beginProfile('db.query', $token);
$cache = null;
/** @var $cache CacheInterface */
if ($connection->enableQueryCache && $method !== '') {
$cache = Instance::ensure($connection->queryCache, null, [], false);
}
$lock = true;
if ($cache instanceof CacheInterface) {
$cacheKey = json_encode([__CLASS__, $method, $connection->dsn, $connection->username, $rawSql]);
$result = $cache->get($cacheKey);
if (is_array($result) && array_key_exists(0, $result)) {
Trace::increment('cache.db', 'Cache query DB connection: ' . $connection->dsn);
Trace::endProfile('db.query', $token);
$token['cache'] = true;
Trace::trace('db.query', $token);
return $result[0];
}
$lock = $cache->lock($cacheKey);
}
if ($lock === false) {
return null;
}
$this->prepare(true);
try {
$this->pdoStatement->execute();
if ($method === '') {
$result = new DataReader($this);
} else {
if ($fetchMode === null) {
$fetchMode = $this->fetchMode;
}
$result = call_user_func_array([$this->pdoStatement, $method], (array) $fetchMode);
if ($result === false) {
$result = null;
}
$this->pdoStatement->closeCursor();
}
if (isset($cache, $cacheKey) && $cache instanceof CacheInterface) {
$cache->set($cacheKey, [$result], $connection->queryCacheExpire, $connection->queryCacheTags ?: $this->getRawEntityNames());
$cache->unlock($cacheKey);
}
Trace::endProfile('db.query', $token);
Trace::trace('db.query', $token);
return $result;
} catch (\Exception $e) {
$message = $e->getMessage() . "\nThe SQL being executed was: {$rawSql}";
Trace::endProfile('db.query', $token);
$token['valid'] = false;
$token['exception'] = defined('ROCK_DEBUG') && ROCK_DEBUG === true ? $e : $message;
Trace::trace('db.query', $token);
if (isset($cache, $cacheKey) && $cache instanceof CacheInterface) {
$cache->unlock($cacheKey);
}
throw new DbException($message, [], 0, $e);
}
}
protected function getCache($rawQuery, $token, $all, $indexBy, &$cache, &$cacheKey, &$lock = true)
{
/** @var $cache CacheInterface */
if ($this->connection->enableQueryCache) {
$cache = Instance::ensure($this->connection->queryCache, null, [], false);
}
if ($cache instanceof CacheInterface) {
$cacheKey = json_encode([__METHOD__, $this->connection->dsn, $rawQuery]);
if (($result = $cache->get($cacheKey)) !== false) {
Trace::increment('cache.mongodb', 'Cache query MongoDB connection: ' . $this->connection->dsn);
Trace::endProfile('mongodb.query', $token);
$token['cache'] = true;
Trace::trace('mongodb.query', $token);
return is_array($result) ? $this->fetchRowsAsArrayInternal($result, $all, $indexBy) : $result;
}
$lock = $cache->lock($cacheKey);
}
return false;
}
protected function getCache($rawQuery, $token, &$cache, &$cacheKey)
{
$this->calculateCacheParams($this->connection);
/** @var $cache CacheInterface */
if ($this->connection->enableQueryCache) {
$cache = Instance::ensure($this->connection->queryCache, null, [], false);
}
if ($cache instanceof CacheInterface) {
$cacheKey = json_encode([__METHOD__, $this->connection->dsn, $rawQuery]);
if (($result = $cache->get($cacheKey)) !== false) {
Trace::increment('cache.mongodb', 'Cache query MongoDB connection: ' . $this->connection->dsn);
Trace::endProfile('mongodb.query', $token);
$token['cache'] = true;
Trace::trace('mongodb.query', $token);
return $result;
}
}
return false;
}
