protected function getOptions(\Mage_Eav_Model_Entity_Attribute $attribute)
{
$resourceModel = \Mage::getSingleton('core/resource');
$select = $this->readConnection->select()->from(array('o' => $resourceModel->getTableName('eav_attribute_option')))->join(array('ov' => $resourceModel->getTableName('eav_attribute_option_value')), 'o.option_id = ov.option_id')->where('o.attribute_id = ?', $attribute->getId())->where('ov.store_id = 0')->order('ov.option_id');
$query = $select->query();
$values = array();
foreach ($query->fetchAll() as $row) {
$values[] = $row['value'];
}
return array('values' => $values);
}