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<?php
/**
* Класс модели данных
*
* @copyright NetMonsters <team@netmonsters.ru>
* @link http://netmonsters.ru
* @package Majestic
* @subpackage Model
* @since 2010-02-16
*/
abstract class Model
{
/**
* DbDriver instance
*
* @var DbDriver
*/
protected $db;
/**
* Cache instance
*
* @var Cache
*/
protected $cache;
/**
* Custom expiration time for keys
*
* @var mixed
*/
protected $cache_keys = array();
/**
* Caches to clean.
*
* @var mixed
*/
protected $caches_clean = array();
protected $table;
protected $key = 'id';
public function __construct($connection = 'default')
{
$this->db = Db::connect($connection);
}
/**
* @return int
*/
public function getInsertId()
{
return $this->db->getInsertId($this->table(), $this->key);
}
/**
* @param array $data
* @return int Id of inserted row
*/
public function insert($data)
{
$affected = $this->db->insert($this->table(), $data);
return ($this->getInsertId()) ? $this->getInsertId() : $affected;
}
/**
* @param array $data
* @param mixed $where
* @return int Number of affected rows
*/
public function update($data, $where)
{
return $this->db->update($this->table(), $data, $where);
}
/**
* @return string
*/
protected function table()
{
if (!$this->table) {
$this->table = substr(strtolower(get_class($this)), 0, -5/*strlen('Model')*/);
}
return $this->table;
}
/* Cache workaround */
/**
* @return Cache
*/
public function getCache()
{
if (!$this->cache) {
$this->cache = Cacher::get(Config::get(__CLASS__, 'MemcacheCache'));
}
return $this->cache;
}
/**
* @param string $name
* @param array $params
* @return CacheKey
*/
protected function cacheKey($name, $params = array())
{
$expire = (isset($this->cache_keys[$name])) ? ($this->cache_keys[$name] * 60) : 0;
return new CacheKey($this->getCache(), $name, $params, $expire);
}
/**
* @param CacheKey $cache
*/
protected function addCleanCache($cache)
{
$this->caches_clean[] = $cache;
}
protected function cleanCaches()
{
// cleaning caches
foreach ($this->caches_clean as $cache) {
$cache->del();
}
$this->caches_clean = array();
}
/**
* Abstract methods
*/
/**
* @param int $id
* @return object
*/
abstract public function get($id);
/**
* @param int $id Int id
* @return int Number of affected rows
*/
abstract public function delete($id);
/**
* @param string $data Request
* @param array $params Request parameters
* @param string $field Requested field name
* @param CacheKey $cache_key Key for caching in
*/
abstract protected function fetchField($data, $params = array(), $field, $cache_key = null);
/**
* @param string $data Request
* @param array $params Request parameters
* @param CacheKey $cache_key Key for caching in
*/
abstract protected function fetch($data, $params = array(), $cache_key = null);
/**
* @param string $data
* @param array $params
* @param CacheKey $cache_key
*/
abstract protected function fetchAll($data, $params = array(), $cache_key = null);
}