/**
* Lookups location descriptions for the given objects.
* @param objects
* List of objects
* @param result
* List of results. The list may hold none, one or more entries for each
* object.
* @return
* True, if there was no error
*/
bool LocationService::ReverseLookupObjects(const std::list<ObjectFileRef>& objects,
std::list<ReverseLookupResult>& result) const
{
result.clear();
LocationIndexRef locationIndex=database->GetLocationIndex();
if (!locationIndex) {
return false;
}
AdminRegionReverseLookupVisitor adminRegionVisitor(*database,
result);
for (const auto& object : objects) {
std::vector<GeoCoord> coords;
if (object.GetType()==refNode) {
NodeRef node;
if (!database->GetNodeByOffset(object.GetFileOffset(),
node)) {
return false;
}
AdminRegionReverseLookupVisitor::SearchEntry searchEntry;
searchEntry.object=object;
searchEntry.coords.push_back(node->GetCoords());
adminRegionVisitor.AddSearchEntry(searchEntry);
}
else if (object.GetType()==refArea) {
AreaRef area;
if (!database->GetAreaByOffset(object.GetFileOffset(),
area)) {
return false;
}
for (size_t r=0; r<area->rings.size(); r++) {
if (area->rings[r].ring==Area::outerRingId) {
AdminRegionReverseLookupVisitor::SearchEntry searchEntry;
searchEntry.object=object;
searchEntry.coords=area->rings[r].nodes;
adminRegionVisitor.AddSearchEntry(searchEntry);
}
}
}
else if (object.GetType()==refWay) {
WayRef way;
if (!database->GetWayByOffset(object.GetFileOffset(),
way)) {
return false;
}
AdminRegionReverseLookupVisitor::SearchEntry searchEntry;
searchEntry.object=object;
searchEntry.coords=way->nodes;
adminRegionVisitor.AddSearchEntry(searchEntry);
}
else {
return false;
}
}
if (!VisitAdminRegions(adminRegionVisitor)) {
return false;
}
if (adminRegionVisitor.adminRegions.empty()) {
return true;
}
LocationReverseLookupVisitor locationVisitor(result);
for (const auto& object : objects) {
locationVisitor.AddObject(object);
}
for (const auto& regionEntry : adminRegionVisitor.adminRegions) {
if (!locationIndex->VisitAdminRegionLocations(*regionEntry.second,
locationVisitor,
false)) {
return false;
}
}
AddressReverseLookupVisitor addressVisitor(result);
for (const auto& object : objects) {
addressVisitor.AddObject(object);
}
for (const auto& location : locationVisitor.locations) {
if (!locationIndex->VisitLocationAddresses(*location.adminRegion,
*location.location,
addressVisitor)) {
return false;
}
}
return true;
}
