Flow for conditionals inside sequence diagram - uml

Question

I need to document in UML sequence diagram the method setRepresentative. This is the code method:
class ReptoolController extends PageController {
private function setRepresentative($request, $action, $case)
{
...
$repappConfig = new RepappConfig();
$repappConfig = $this->getDoctrine()->getRepository('AppBundle:RepappConfig')->findOneBy(array("app_id"=>$id));
$project_id = $repappConfig->getProjectId();
$company_id = $repappConfig->getCompanyId();
$project = $this->getDoctrine()->getRepository('AppBundle:Project')->find($project_id);
$brand = $this->getDoctrine()->getRepository('AppBundle:Brand')->findOneBy(array("project"=>$project_id));
$company = $this->getDoctrine()->getRepository('AppBundle:Company')->find($company_id);
$territory = new Territory();
if(is_numeric($territory_name))
{
$tempName = "ID";
}
else
{
$tempName = "territory";
}
if($territory = $this->getDoctrine()->getRepository('AppBundle:Territory')->findOneBy(array($tempName=>$territory_name)))
{
$territory_id = $territory->getID();
$response->territory_id = $territory_id;
if($brand)
{
$is_enabled = 1;
$position = 1;
$brand_id = $brand->getID();
$terr_brand_xrf = $this->getDoctrine()->getRepository('AppBundle:TerritoryBrandXref')->findOneBy(array("territory"=>$territory_id, "brand"=>$brand_id));
if(!$terr_brand_xrf)
{
$terr_brand_xref = new TerritoryBrandXref($territory,$brand,$position);
$terr_brand_xref->setIsEnabled($is_enabled);
$terr_brand_xref->updateTimestamps();
$em = $this->getDoctrine()->getEntityManager();
$em->persist($terr_brand_xref);
$em->flush();
}
}
}
else
{
$territory->setTerritory($territory_name);
$territory->setProject($project);
$em = $this->getDoctrine()->getEntityManager();
$em->persist($territory);
$em->flush();
$territory_id = $territory->getID();
$response->territory_id = $territory_id;
if($brand)
{
$is_enabled = 1;
$position = 1;
$brand_id = $brand->getID();
$response->brand_id= $brand_id;
$terr_brand_xref = new TerritoryBrandXref($territory,$brand,$position);
$terr_brand_xref->setIsEnabled($is_enabled);
$terr_brand_xref->updateTimestamps();
$em = $this->getDoctrine()->getEntityManager();
$em->persist($terr_brand_xref);
$em->flush();
}
}
$controller_response = new Response( json_encode($response) );
$controller_response->headers->set('Content-Type', 'application/json; charset=utf-8');
return $controller_response;
}
}
This is the diagram as I have it now:
How do I diagram the conditionals inside this piece of code:
if($territory = $this->getDoctrine()->getRepository('PDOneBundle:Territory')->findOneBy(array($tempName=>$territory_name)))
{
...
} else {
...
}
How do I call the inside methods?

Answer 1

Actually what you are asking does not make sense (see my comment here: UML Sequence Diagram help needed). SDs are not meant to repeat algorithms in graphical notation. Code is much better for that purpose. The possibility to show loops and if conditions inside SDs is meant to be used only for a high level view of the system.
In your case you should concentrate on certain aspects of the runtime. Just like an important snapshot. Create a SD for the tech use case with a really sequential message flow. Eventually create more than one SD to light different aspects. But do NOT try to press the whole algorithm in a single SD.