// letter given
$request->setLetter($parts[4]);
}
$controller->invokeAlphabeticalIndex($request);
} elseif ($request->getPage() == 'page') {
$request->getQueryParam('uri') ? $request->setUri($request->getQueryParam('uri')) : $request->setUri($parts[4]);
if ($request->getUri() === null || $request->getUri() === '') {
$controller->invokeGenericErrorPage($request);
} else {
$controller->invokeVocabularyConcept($request);
}
} elseif ($request->getPage() == 'groups') {
if (sizeof($parts) == 4) {
if ($request->getQueryParam('uri')) {
$request->setUri($request->getQueryParam('uri'));
$controller->invokeGroupContents($request);
} else {
$controller->invokeGroupIndex($request);
}
} else {
$request->getQueryParam('uri') ? $request->setUri($request->getQueryParam('uri')) : $request->setUri($parts[4]);
if ($request->getUri() === null) {
$controller->invokeGroupIndex($request);
} else {
$controller->invokeGroupContents($request);
}
}
} elseif ($request->getPage() == 'changes') {
$controller->invokeChangeList($request, 'dc:modified');
} elseif ($request->getPage() == 'new') {
$controller->invokeChangeList($request);
