public function testCacheFlushing()
{
$objCache = class_cache::createNewInstance(self::$strCacheSource);
$objCache->setStrHash1("testClean");
$objCache->setStrContent("test");
$objCache->setIntLeasetime(time() + 2);
$objCache->updateObjectToDb();
$this->flushDBCache();
$objEntry = class_cache::getCachedEntry(self::$strCacheSource, "testClean");
$this->assertNotNull($objEntry);
$this->flushDBCache();
class_cache::flushCache(self::$strCacheSource);
$this->flushDBCache();
$objEntry = class_cache::getCachedEntry(self::$strCacheSource, "testClean");
$this->assertNull($objEntry);
}
/**
* Tries to load a cached entry.
* If existing, a valid object is returned.
* Otherwise, e.g. if not found or invalid,
* null is returned instead.
*
* @param string $strSourceName
* @param string $strHash1
* @param string $strHash2
* @param string $strLanguage
* @param bool $bitCreateInstanceOnNotFound if no entry was found, a new instance is created and returned. Set the content afterwards!
* @return class_cache or null
*/
public static function getCachedEntry($strSourceName, $strHash1, $strHash2 = null, $strLanguage = null, $bitCreateInstanceOnNotFound = false)
{
self::$intRequests++;
//first run - search the internal cache
foreach (self::$arrInternalCache as $arrSingleCacheEntry) {
if ($arrSingleCacheEntry["cache_source"] == $strSourceName && $arrSingleCacheEntry["cache_hash1"] == $strHash1 && ($strHash2 == null || $arrSingleCacheEntry["cache_hash2"] == $strHash2) && ($strLanguage == null || $arrSingleCacheEntry["cache_language"] == $strLanguage)) {
$objCacheEntry = new class_cache($arrSingleCacheEntry["cache_source"], $arrSingleCacheEntry["cache_hash1"], $arrSingleCacheEntry["cache_hash2"], $arrSingleCacheEntry["cache_language"], $arrSingleCacheEntry["cache_content"], $arrSingleCacheEntry["cache_leasetime"], $arrSingleCacheEntry["cache_id"]);
self::$intHits++;
if (_cache_ === true) {
$objCacheEntry->increaseCacheEntryHits();
}
return $objCacheEntry;
}
}
//search in the database to find a matching entry
$strQuery = "SELECT *\n FROM " . _dbprefix_ . "cache\n WHERE cache_source = ?\n AND cache_hash1 = ?\n " . ($strHash2 != null ? " AND cache_hash2 = ? " : "") . "\n " . ($strLanguage != null ? " AND cache_language = ? " : "") . "\n AND cache_leasetime > ? ";
$arrParams = array($strSourceName, $strHash1);
if ($strHash2 != null) {
$arrParams[] = $strHash2;
}
if ($strLanguage != null) {
$arrParams[] = $strLanguage;
}
$arrParams[] = time();
$arrRow = class_carrier::getInstance()->getObjDB()->getPRow($strQuery, $arrParams);
if (isset($arrRow["cache_id"])) {
$objCacheEntry = new class_cache($arrRow["cache_source"], $arrRow["cache_hash1"], $arrRow["cache_hash2"], $arrRow["cache_language"], $arrRow["cache_content"], $arrRow["cache_leasetime"], $arrRow["cache_id"]);
self::$intHits++;
if (_cache_ === true) {
$objCacheEntry->increaseCacheEntryHits();
}
return $objCacheEntry;
} else {
//entry not existing, return null or create a new one?
if ($bitCreateInstanceOnNotFound) {
$objCache = class_cache::createNewInstance($strSourceName);
$objCache->setStrHash1($strHash1);
$objCache->setStrHash2($strHash2);
$objCache->setStrLanguage($strLanguage);
return $objCache;
}
return null;
}
}
