/**
* Constructor.
* initialize object.
*
* @param string $hash the cache hash to use
* @param string $type : the type of the cache to use
* @param mixed $lifetime : the cache lifetime
* @return void
* @access public
*/
function __construct($hash, $type, $lifetime = null, $contextAware = false)
{
if ($contextAware) {
$this->_parameters['hash'] = $hash . '_' . CMS_session::getContextHash();
$this->_context = true;
} else {
$this->_parameters['hash'] = $hash;
}
//normalize cache lifetime
if ($lifetime == 'false' || $lifetime == '0' || $lifetime === false || $lifetime === 0) {
$lifetime = false;
}
if ($lifetime == 'true' || $lifetime == 'auto' || $lifetime == '1' || $lifetime === true || $lifetime === 1) {
//this definition do not use PHP so use default cache lifetime
$lifetime = CACHE_MODULES_DEFAULT_LIFETIME;
//set this cache as auto lifetime
$this->_auto = true;
}
if (io::isPositiveInteger($lifetime)) {
$lifetime = (int) $lifetime;
}
$this->_parameters['type'] = io::sanitizeAsciiString($type);
$this->_parameters['lifetime'] = $lifetime ? $lifetime : null;
//check cache dir
$cachedir = new CMS_file(PATH_CACHE_FS . '/' . $this->_parameters['type'], CMS_file::FILE_SYSTEM, CMS_file::TYPE_DIRECTORY);
if (!$cachedir->exists()) {
$cachedir->writeTopersistence();
}
//Cache options
$frontendOptions = array('lifetime' => $this->_parameters['lifetime'], 'caching' => $this->_parameters['lifetime'] === null ? false : CACHE_MODULES_DATAS, 'automatic_cleaning_factor' => 50, 'automatic_serialization' => true);
$backendOptions = array('cache_dir' => PATH_CACHE_FS . '/' . $this->_parameters['type'], 'cache_file_umask' => octdec(FILES_CHMOD), 'hashed_directory_umask' => octdec(DIRS_CHMOD), 'hashed_directory_level' => 2);
// getting a Zend_Cache_Core object
if (!class_exists('Zend_Cache')) {
die('not found ....');
}
try {
$this->_cache = Zend_Cache::factory('Core', 'File', $frontendOptions, $backendOptions);
} catch (Zend_Cache_Exception $e) {
$this->raiseError($e->getMessage());
return false;
}
if (!isset($this->_cache) || !is_object($this->_cache)) {
$this->raiseError('Error : Zend cache object does not exists');
return false;
}
}
/**
* Get current context hash (usually used for cache)
*
* @param array $datas, additionnal datas to use for cache
* @return string : the current context cache
* @access public
* @static
*/
static function getContextHash($datas = array())
{
return CMS_session::getContextHash($datas);
}
