function get_execute_privilege(&$controller, &$request, &$user)
 {
     $acs_user_info_row = $user->getAttribute('acs_user_info_row');
     // 本人はOK
     if ($user->hasCredential('USER_PAGE_OWNER')) {
         return true;
     }
     // 書込み本人はOK
     $diary_comment_row = ACSDiary::get_diary_comment_row($request->getParameter('diary_comment_id'));
     if ($acs_user_info_row['user_community_id'] == $diary_comment_row['user_community_id']) {
         return true;
     }
     return false;
 }