public function convert(Payone_Log4php_LoggerLoggingEvent $event)
 {
     if (isset($this->key)) {
         return $event->getMDC($this->key);
     } else {
         $buff = array();
         $map = $event->getMDCMap();
         foreach ($map as $key => $value) {
             $buff[] = "{$key}={$value}";
         }
         return implode(', ', $buff);
     }
 }
 /**
  * Formats a {@link LoggerLoggingEvent} in conformance with the log4php.dtd.
  *
  * @param Payone_Log4php_LoggerLoggingEvent $event
  * @return string
  */
 public function format(Payone_Log4php_LoggerLoggingEvent $event)
 {
     $ns = $this->namespacePrefix;
     $loggerName = $event->getLoggerName();
     $timeStamp = number_format((double) ($event->getTimeStamp() * 1000), 0, '', '');
     $thread = $event->getThreadName();
     $level = $event->getLevel()->toString();
     $buf = "<{$ns}:event logger=\"{$loggerName}\" level=\"{$level}\" thread=\"{$thread}\" timestamp=\"{$timeStamp}\">" . PHP_EOL;
     $buf .= "<{$ns}:message>";
     $buf .= $this->encodeCDATA($event->getRenderedMessage());
     $buf .= "</{$ns}:message>" . PHP_EOL;
     $ndc = $event->getNDC();
     if (!empty($ndc)) {
         $buf .= "<{$ns}:NDC><![CDATA[";
         $buf .= $this->encodeCDATA($ndc);
         $buf .= "]]></{$ns}:NDC>" . PHP_EOL;
     }
     $mdcMap = $event->getMDCMap();
     if (!empty($mdcMap)) {
         $buf .= "<{$ns}:properties>" . PHP_EOL;
         foreach ($mdcMap as $name => $value) {
             $buf .= "<{$ns}:data name=\"{$name}\" value=\"{$value}\" />" . PHP_EOL;
         }
         $buf .= "</{$ns}:properties>" . PHP_EOL;
     }
     if ($this->getLocationInfo()) {
         $locationInfo = $event->getLocationInformation();
         $buf .= "<{$ns}:locationInfo " . "class=\"" . $locationInfo->getClassName() . "\" " . "file=\"" . htmlentities($locationInfo->getFileName(), ENT_QUOTES) . "\" " . "line=\"" . $locationInfo->getLineNumber() . "\" " . "method=\"" . $locationInfo->getMethodName() . "\" ";
         $buf .= "/>" . PHP_EOL;
     }
     $buf .= "</{$ns}:event>" . PHP_EOL;
     return $buf;
 }