/**
* Returns the field map for the variable
* Note that param $var_name will be replaced with the best matched var name
* @param string $var_name
* @return false|epFieldMap
*/
protected function &_getFieldMap($var_name)
{
// check if we have class map
if (!$this->ep_cm || !$var_name) {
return self::$false;
}
// check if field map is cached
if (isset($this->ep_fms[$var_name])) {
return $this->ep_fms[$var_name];
}
// get field map
$fm = $this->ep_cm->getField($var_name);
// cache it
$this->ep_fms[$var_name] = $fm;
// return the field map for the var
return $fm;
}