public function get($keyName, $lifetime = null)
{
$prefixedKey = $this->getPrefixedIdentifier($keyName);
$sql = "SELECT data, lifetime FROM {$this->table} WHERE key_name = ?";
$cache = $this->db->fetchOne($sql, Db::FETCH_ASSOC, [$prefixedKey]);
$this->_lastKey = $prefixedKey;
if (!$cache) {
return null;
}
/** @var \Phalcon\Cache\FrontendInterface $frontend */
$frontend = $this->getFrontend();
// Remove the cache if expired
if ($cache['lifetime'] < time()) {
$this->db->execute("DELETE FROM {$this->table} WHERE key_name = ?", [$prefixedKey]);
return null;
}
return $frontend->afterRetrieve($cache['data']);
} protected function runTests(CacheBackend $backend, $lifetime = null)
{
$backend->save($this->key, $this->data, $lifetime);
$this->assertTrue($backend->exists($this->key));
$this->assertEquals($this->data, $backend->get($this->key));
$this->assertNotEmpty($backend->queryKeys());
$this->assertNotEmpty($backend->queryKeys('DB_'));
$this->assertTrue($backend->delete($this->key));
$this->assertFalse($backend->delete($this->key));
if (null !== $lifetime) {
$backend->save($this->key, $this->data, $lifetime);
$this->assertTrue($backend->exists($this->key, $lifetime));
$this->assertEquals($this->data, $backend->get($this->key, $lifetime));
$backend->save($this->key, $this->data, -$lifetime);
$this->assertFalse($backend->exists($this->key, -$lifetime));
}
}
