public function search()
{
// Warning: Please modify the following code to remove attributes that
// should not be searched.
$criteria = new CDbCriteria();
$criteria->compare('meta_id', $this->meta_id, true);
$criteria->compare('meta_object_id', $this->meta_object_id, true);
$criteria->compare('meta_key', $this->meta_key, true);
$criteria->compare('meta_value', $this->meta_value, true);
return new CActiveDataProvider($this, array('criteria' => $criteria));
}