/**
* Returns an array containing, for each field, the arary key used for that
* field in self::$_fields.
*
* @return array
*/
static function &fieldKeys()
{
if (!self::$_fieldKeys) {
self::$_fieldKeys = array('id' => 'id', 'file_type_id' => 'file_type_id', 'mime_type' => 'mime_type', 'uri' => 'uri', 'document' => 'document', 'description' => 'description', 'upload_date' => 'upload_date');
}
return self::$_fieldKeys;
}
