/**
* Initializes the cache and determines caching method.
*
* @author Martin Helmich <*****@*****.**>
* @version 2008-10-11
* @param string $mode The caching mode. This may either be 'auto',
* 'apc','database','file' or 'none' (see above).
* @param array $configuration
* @throws Exception
*/
function init($mode = 'auto', $configuration = array())
{
/* If mode is set to 'auto' or 'apc', first try to set mode
* to APC (if enabled) or otherwise to database. */
if ($mode == 'auto' || $mode == 'apc') {
if ($this->getAPCEnabled()) {
$useMode = 'apc';
} else {
$useMode = 'database';
}
/* If mode is set to 'file',... */
} elseif ($mode == 'file') {
$useMode = 'file';
} elseif ($mode == 'none') {
$useMode = 'none';
} else {
$useMode = 'database';
}
/* Compose class name and instantiate */
if (isset($GLOBALS['typo3CacheManager'])) {
$this->useTYPO3Cache = TRUE;
if ($useMode == 'database') {
$this->cacheObj =& $this->typo3CacheManager->getCache('cache_hash');
} else {
if ($this->typo3CacheManager->hasCache('mm_forum')) {
$this->cacheObj =& $this->typo3CacheManager->getCache('mm_forum');
} else {
switch ($useMode) {
case 'database':
$className = 't3lib_cache_backend_DbBackend';
break;
case 'apc':
$className = 't3lib_cache_backend_ApcBackend';
break;
case 'file':
$className = 't3lib_cache_backend_FileBackend';
break;
case 'none':
$className = 't3lib_cache_backend_NullBackend';
break;
case 'globals':
$className = 't3lib_cache_backend_GlobalsBackend';
break;
default:
throw new Exception("Unknown caching mode: {$useMode}", 1296594227);
}
if (!class_exists($className) && file_exists(PATH_t3lib . 'cache/backend/class.' . strtolower($className) . '.php')) {
include_once PATH_t3lib . 'cache/backend/class.' . strtolower($className) . '.php';
} elseif (!class_exists($className)) {
$this->cacheObj =& $this->typo3CacheManager->getCache('cache_hash');
}
if (class_exists($className)) {
$cacheBackend = GeneralUtility::makeInstance($className, $configuration);
$cacheObject = GeneralUtility::makeInstance('t3lib_cache_frontend_VariableFrontend', 'mm_forum', $cacheBackend);
$this->typo3CacheManager->registerCache($cacheObject);
$this->cacheObj =& $this->typo3CacheManager->getCache('mm_forum');
} else {
throw new Exception("Cache backend does not exist: {$className}", 1296594228);
}
}
}
} else {
$className = 'tx_mmforum_cache_' . $useMode;
$this->cacheObj =& GeneralUtility::makeInstance($className);
}
}