/**
* Renders the content with a certain lifetime
*
* @param string $key cache key identifier (must be unique per cache entry)
* @param int $lifetime lifetime of the view part in seconds (0 = default as per page)
* @param mixed $tags optional tags
* @param mixed $noCache do not cache if this is non empty
* @return string
* @author Maximilian Kalus <*****@*****.**>
*/
public function render($key, $lifetime = 0, $tags = null, $noCache = null)
{
// do not cache if $excludeIfSet not empty
if (!empty($noCache)) {
return $this->renderChildren();
}
// get cached entry
$output = static::$cacheInstance->get($key);
// lifetime of page
if ($lifetime === 0) {
$lifetime = intval($GLOBALS['TSFE']->get_cache_timeout());
}
// cache miss
if (!$output || is_null($output)) {
$output = $this->renderChildren();
if (!empty($tags)) {
if (is_string($tags)) {
$tags = array($tags);
}
} else {
$tags = array();
}
static::$cacheInstance->set($key, $output, $tags, $lifetime);
}
return $output;
}
/**
* Interface with the BE user data.
*
* @param string $key
* @return string
*/
public function render($key)
{
$this->initializeCache();
$key = $this->getModuleLoader()->getDataType() . '_' . $this->getBackendUserIdentifier() . '_' . $key;
$value = $this->cacheInstance->get($key);
if ($value) {
$value = addslashes($value);
} else {
$value = '';
}
return $value;
}
/**
* Generates an array with terms and hits
*
* @return array Tags as array with terms and hits
*/
protected function getFrequentSearchTerms()
{
$terms = array();
// Use configuration as cache identifier
$identifier = 'frequentSearchesTags';
if ($this->configuration['search.']['frequentSearches.']['select.']['checkRootPageId']) {
$identifier .= '_RP' . (int) $GLOBALS['TSFE']->tmpl->rootLine[0]['uid'];
}
if ($this->configuration['search.']['frequentSearches.']['select.']['checkLanguage']) {
$identifier .= '_L' . (int) $GLOBALS['TSFE']->sys_language_uid;
}
$identifier .= '_' . md5(serialize($this->configuration['search.']['frequentSearches.']));
if ($this->cacheInstance->has($identifier)) {
$terms = $this->cacheInstance->get($identifier);
} else {
$terms = $this->getFrequentSearchTermsFromStatistics();
if ($this->configuration['search.']['frequentSearches.']['sortBy'] == 'hits') {
arsort($terms);
} else {
ksort($terms);
}
$lifetime = null;
if (isset($this->configuration['search.']['frequentSearches.']['cacheLifetime'])) {
$lifetime = intval($this->configuration['search.']['frequentSearches.']['cacheLifetime']);
}
$this->cacheInstance->set($identifier, $terms, array(), $lifetime);
}
return $terms;
}
/**
* Generates an array with terms and hits
*
* @return array Tags as array with terms and hits
*/
public function getFrequentSearchTerms()
{
$frequentSearchConfiguration = $this->configuration->getSearchFrequentSearchesConfiguration();
$terms = array();
$identifier = $this->getCacheIdentifier($frequentSearchConfiguration);
if ($this->cache->has($identifier)) {
$terms = $this->cache->get($identifier);
} else {
$terms = $this->getFrequentSearchTermsFromStatistics($frequentSearchConfiguration);
if ($frequentSearchConfiguration['sortBy'] == 'hits') {
arsort($terms);
} else {
ksort($terms);
}
$lifetime = null;
if (isset($frequentSearchConfiguration['cacheLifetime'])) {
$lifetime = intval($frequentSearchConfiguration['cacheLifetime']);
}
$this->cache->set($identifier, $terms, array(), $lifetime);
}
return $terms;
}