Question

我尝试在ZF1中实现缓存失效。我的想法是为缓存类添加一个监听器，这将在'invalidate'事件的情况下触发失效。

根据我在手册中学到的，正确的方法是将事件管理器添加到可能触发缓存失效的每个类，然后将缓存类监听器附加到它。但是做这么简单的任务似乎是一项非常艰巨的工作。

可以编写它以使其工作......喜欢： *任何类都可以触发'invalidate'事件 *每当触发invalidate事件时，都会调用CacheManager类的指定回调并清除缓存

Answer 1

我做了什么，希望它有所帮助：

class Application_Service_Client extends Application_Service_AbstractService
{

    protected $cacheFormId = 'clientList';
    protected $index = 'client';

    public function __construct()
    {
        parent::__construct(new Application_Model_DbTable_Client());

        $this->events->attach('insert', function ($e) {
            $event  = $e->getName();
            $target = get_class($e->getTarget());

            $this->cleanCache('clientList');
        });
    }

    public function ajouterClient($data)
    {
        unset($data['csrfhash']);
        $id = $this->model->ajouter($data);
        $client = $this->findClient($id);

        $this->events()->trigger('insert', $this, $client);
        return $client;
    }

    public function formList()
    {
        mb_internal_encoding("UTF-8");

        $cache   = $this->getCache();
        $cacheId = $this->cacheFormId;

        if (!($toCache = $cache->load($cacheId))) {
            $itemAll = $this->findAll();
            foreach ($itemAll as $item) {
                $key[]  = $item['IDCLIENT'];
                $value[] = $item['NOM'] . ' ' . $item['PRENOM'];
            }

            $toCache = array_combine($key, $value);
            $cache->save($toCache, $cacheId);
        }

        return $toCache;
    }

}

抽象类：

abstract class Application_Service_AbstractService
{
    protected $model;

    protected $cache;

    protected $events;

    public function __construct($model = null)
    {
        if (!is_null($model)) {
            $this->setModel($model);
        }

        $this->events();
        $this->setCache();
    }

    public function events(Zend_EventManager_EventCollection $events = null)
    {
        if (null !== $events) {
            $this->events = $events;
        } elseif (null === $this->events) {
            $this->events = new Zend_EventManager_EventManager(__CLASS__);
        }
        return $this->events;
    }

    public function setCache($cacheName = 'form')
    {
        $bootstrap = \Zend_Controller_Front::getInstance()->getParam('bootstrap');

        $cacheManager = $bootstrap->getResource('cachemanager');

        $this->cache = $cacheManager->getCache($cacheName);
    }

    /** 
     * Get a cache object from the cache manager 
     * 
     * @return Zend_Cache 
     */
    protected function getCache()  
    {
        if (!$this->cache) {
            $this->setCache();
        }
        return $this->cache;
    }

    protected function cleanCache($cacheId)
    {
        $this->cache->remove($cacheId);
    }

}

使用Zend Framework事件管理器清除缓存

1 个答案: