/**
* Saves the given cache
* Prevents broken cache when write_control is disabled and displays problems by log or error
*
* @param mixed $data
* @param string $id
* @return boolean Returns false when the cache has not been written
*/
protected function saveCache($data, $id)
{
if (self::$_cacheTags) {
self::$_cache->setItem($id, $data, array('tags' => array($this->_options['tag'])));
} else {
self::$_cache->setItem($id, $data);
}
if (!self::$_cache->hasItem($id)) {
if (!$this->_options['disableNotices']) {
if ($this->_options['log']) {
$this->_options['log']->log($this->_options['logPriority'], "Writing to cache failed.");
} else {
trigger_error("Writing to cache failed.", E_USER_NOTICE);
}
}
self::$_cache->removeItem($id);
return false;
}
return true;
}
public function testRemoveItemReturnsFalseOnMissingItem()
{
$this->assertFalse($this->_storage->removeItem('missing'));
}
/**
* Clear the page item cache.
*
* @param int $pageNumber
* @return Paginator
*/
public function clearPageItemCache($pageNumber = null)
{
if (!$this->_cacheEnabled()) {
return $this;
}
if (null === $pageNumber) {
self::$_cache->find(CacheAdapter::MATCH_TAGS_OR, array('tags' => array(
$this->_getCacheInternalId()
)));
$cacheIds = array();
while (($item = self::$_cache->fetch()) !== false) {
$cacheIds[] = $item['key'];
}
foreach ($cacheIds as $id) {
if (preg_match('|'.self::CACHE_TAG_PREFIX."(\d+)_.*|", $id, $page)) {
self::$_cache->removeItem($this->_getCacheId($page[1]));
}
}
} else {
$cleanId = $this->_getCacheId($pageNumber);
self::$_cache->removeItem($cleanId);
}
return $this;
}
