<div class="content" name="IAppHostMappingExtension" uuid="0cc538ac-e493-481b-b314-d27b5b6dec0e"><p>The IAppHostMappingExtension <a href="4e36e522-a35d-4fec-bc9c-6ed14d49d5ca#gt_95913fbd-3262-47ae-b5eb-18e6806824b9" data-linktype="relative-path">interface</a> provides methods
that access the path hierarchy mapping system of the administration system.</p><p>The administration system implements a path hierarchy system
that maps paths to potential <a href="59774887-09e3-4de5-ad8e-4794f404b123" data-linktype="relative-path">IAppHostElement</a>
containers. Some details of the path hierarchy are exposed to the user in this
IAppHostMappingExtension.</p><p>The IAppHostMappingExtension interface inherits opnums 0–2
from the <a href="../ms-dcom/2b4db106-fb79-4a67-b45f-63654f19c54c" data-linktype="relative-path">IUnknown</a>
interface.</p><p>Methods in RPC Opnum Order</p><table><thead>
  <tr>
   <th>
   <p>Method</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>GetSiteNameFromSiteId</td>
  <td>Opnum: 3</td>
 </tr><tr>
  <td>GetSiteIdFromSiteName</td>
  <td>Opnum: 4</td>
 </tr><tr>
  <td>GetSiteElementFromSiteId</td>
  <td>Opnum: 5</td>
 </tr><tr>
  <td>MapPath</td>
  <td>Opnum: 6</td>
 </tr></tbody></table><p> </p></div>