public function load($oid = null, $reset = true)
 {
     if (!$oid) {
         return false;
     }
     return parent::load($oid, $reset);
 }

 function load($oid = null)
 {
     if (!$oid) {
         return false;
     }
     return parent::load($oid);
 }

 public function __construct($db)
 {
     parent::__construct('#__kunena_user_read', array('user_id', 'topic_id'), $db);
 }

 public function __construct($db)
 {
     parent::__construct('#__kunena_polls', 'id', $db);
 }

	function store() {
		$k = $this->_tbl_key;
		$update = $this->_exists;
		$message = $this->message;
		unset($this->message);
		if (!parent::store())
			return false;
		$this->message = $message;

		if ($update) {
			$query = "UPDATE #__kunena_messages_text SET message={$this->_db->quote($this->message)} WHERE mesid = {$this->$k}";
		} else {
			$query = "INSERT INTO #__kunena_messages_text (mesid, message) VALUES ({$this->$k}, {$this->_db->quote($this->message)})";
		}
		$this->_db->setQuery($query);
		$this->_db->query();

		// Check for an error message.
		if ($this->_db->getErrorNum()) {
			$this->setError($this->_db->getErrorMsg());
			return false;
		}
		return true;
	}

	function __construct($db) {
		parent::__construct ( '#__kunena_keywords', 'id', $db );
	}

 public function store($updateNulls = false)
 {
     $ret = parent::store($updateNulls);
     return $ret;
 }

 /**
  * @param   string $db
  */
 public function __construct($db)
 {
     parent::__construct('#__kunena_announcement', 'id', $db);
 }

 function store($updateNulls = false)
 {
     $ret = parent::store($updateNulls);
     if ($ret) {
         // we must reset session, when forum record was changed
         $this->_db->setQuery("UPDATE #__kunena_sessions SET allowed='na'");
         $this->_db->query();
         KunenaError::checkDatabaseError();
     }
     return $ret;
 }

	public function __construct($db) {
		parent::__construct ( '#__kunena_attachments', 'id', $db );
	}

	public function bind($data, $ignore=array()) {
		parent::bind($data, $ignore);
		$fields = array('name', 'username', 'email', 'blocked', 'registerDate', 'lastvisitDate');
		foreach ($fields as $field) {
			if (isset($data[$field]) && !in_array($field, $ignore)) $this->$field = $data[$field];
		}
	}

 public function bind($data, $ignore = array())
 {
     parent::bind($data, $ignore);
     $fields = array('name', 'username', 'blocked');
     foreach ($fields as $field) {
         if (isset($data[$field]) && !in_array($field, $ignore)) {
             $this->{$field} = $data[$field];
         }
     }
 }