/**
* Constructor.
*
* You can either pass an existing database connection as PDO instance or
* a Doctrine DBAL Connection or a DSN string that will be used to
* lazy-connect to the database when the cache is actually used.
*
* List of available options:
* * db_table: The name of the table [default: cache_items]
* * db_id_col: The column where to store the cache id [default: item_id]
* * db_data_col: The column where to store the cache data [default: item_data]
* * db_lifetime_col: The column where to store the lifetime [default: item_lifetime]
* * db_time_col: The column where to store the timestamp [default: item_time]
* * db_username: The username when lazy-connect [default: '']
* * db_password: The password when lazy-connect [default: '']
* * db_connection_options: An array of driver-specific connection options [default: array()]
*
* @param \PDO|Connection|string $connOrDsn A \PDO or Connection instance or DSN string or null
* @param string $namespace
* @param int $defaultLifetime
* @param array $options An associative array of options
*
* @throws InvalidArgumentException When first argument is not PDO nor Connection nor string
* @throws InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
* @throws InvalidArgumentException When namespace contains invalid characters
*/
public function __construct($connOrDsn, $namespace = '', $defaultLifetime = 0, array $options = array())
{
if (isset($namespace[0]) && preg_match('#[^-+.A-Za-z0-9]#', $namespace, $match)) {
throw new InvalidArgumentException(sprintf('Namespace contains "%s" but only characters in [-+.A-Za-z0-9] are allowed.', $match[0]));
}
if ($connOrDsn instanceof \PDO) {
if (\PDO::ERRMODE_EXCEPTION !== $connOrDsn->getAttribute(\PDO::ATTR_ERRMODE)) {
throw new InvalidArgumentException(sprintf('"%s" requires PDO error mode attribute be set to throw Exceptions (i.e. $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION))', __CLASS__));
}
$this->conn = $connOrDsn;
} elseif ($connOrDsn instanceof Connection) {
$this->conn = $connOrDsn;
} elseif (is_string($connOrDsn)) {
$this->dsn = $connOrDsn;
} else {
throw new InvalidArgumentException(sprintf('"%s" requires PDO or Doctrine\\DBAL\\Connection instance or DSN string as first argument, "%s" given.', __CLASS__, is_object($connOrDsn) ? get_class($connOrDsn) : gettype($connOrDsn)));
}
$this->table = isset($options['db_table']) ? $options['db_table'] : $this->table;
$this->idCol = isset($options['db_id_col']) ? $options['db_id_col'] : $this->idCol;
$this->dataCol = isset($options['db_data_col']) ? $options['db_data_col'] : $this->dataCol;
$this->lifetimeCol = isset($options['db_lifetime_col']) ? $options['db_lifetime_col'] : $this->lifetimeCol;
$this->timeCol = isset($options['db_time_col']) ? $options['db_time_col'] : $this->timeCol;
$this->username = isset($options['db_username']) ? $options['db_username'] : $this->username;
$this->password = isset($options['db_password']) ? $options['db_password'] : $this->password;
$this->connectionOptions = isset($options['db_connection_options']) ? $options['db_connection_options'] : $this->connectionOptions;
parent::__construct($namespace, $defaultLifetime);
}
