function getSearchOptions()
{
$tab = array();
$tab['common'] = __('Characteristics');
$tab[1]['table'] = $this->getTable();
$tab[1]['field'] = 'designation';
$tab[1]['name'] = __('Name');
$tab[1]['datatype'] = 'itemlink';
$tab[1]['massiveaction'] = false;
$tab[23]['table'] = 'glpi_manufacturers';
$tab[23]['field'] = 'name';
$tab[23]['name'] = __('Manufacturer');
$tab[23]['datatype'] = 'dropdown';
$tab[16]['table'] = $this->getTable();
$tab[16]['field'] = 'comment';
$tab[16]['name'] = __('Comments');
$tab[16]['datatype'] = 'text';
$tab[19]['table'] = $this->getTable();
$tab[19]['field'] = 'date_mod';
$tab[19]['name'] = __('Last update');
$tab[19]['datatype'] = 'datetime';
$tab[19]['massiveaction'] = false;
$tab[121]['table'] = $this->getTable();
$tab[121]['field'] = 'date_creation';
$tab[121]['name'] = __('Creation date');
$tab[121]['datatype'] = 'datetime';
$tab[121]['massiveaction'] = false;
$tab[80]['table'] = 'glpi_entities';
$tab[80]['field'] = 'completename';
$tab[80]['name'] = __('Entity');
$tab[80]['datatype'] = 'dropdown';
return $tab;
}