DavProperty<?> acl = resource.getProperty(SecurityConstants.ACL);
if (!(acl instanceof AclProperty)) {
throw new DavException(DavServletResponse.SC_INTERNAL_SERVER_ERROR, "DAV:acl property expected.");
}
DavResourceLocator loc = resource.getLocator();
Map<String, MultiStatusResponse> respMap = new HashMap<String, MultiStatusResponse>();
List<AclProperty.Ace> list = (List<AclProperty.Ace>) ((AclProperty)acl).getValue();
for (AclProperty.Ace ace : list) {
String href = ace.getPrincipal().getHref();
if (href == null && respMap.containsKey(href)) {
// ignore non-href principals and principals that have been listed before
continue;
}
// href-principal that has not been found before
DavResourceLocator princLocator = loc.getFactory().createResourceLocator(loc.getPrefix(), href);
DavResource principalResource = resource.getFactory().createResource(princLocator, resource.getSession());
respMap.put(href, new MultiStatusResponse(principalResource, info.getPropertyNameSet()));
}
this.responses = respMap.values().toArray(new MultiStatusResponse[respMap.size()]);
}