void SendStatistics(SearchParams const & params, m2::RectD const & viewport, Results const & res)
{
size_t const kMaxNumResultsToSend = 10;
size_t const numResultsToSend = min(kMaxNumResultsToSend, res.GetCount());
string resultString = strings::to_string(numResultsToSend);
for (size_t i = 0; i < numResultsToSend; ++i)
resultString.append("\t" + res.GetResult(i).ToStringForStats());
string posX, posY;
if (params.IsValidPosition())
{
posX = strings::to_string(MercatorBounds::LonToX(params.m_lon));
posY = strings::to_string(MercatorBounds::LatToY(params.m_lat));
}
alohalytics::TStringMap const stats = {
{"posX", posX},
{"posY", posY},
{"viewportMinX", strings::to_string(viewport.minX())},
{"viewportMinY", strings::to_string(viewport.minY())},
{"viewportMaxX", strings::to_string(viewport.maxX())},
{"viewportMaxY", strings::to_string(viewport.maxY())},
{"query", params.m_query},
{"locale", params.m_inputLocale},
{"results", resultString},
};
alohalytics::LogEvent("searchEmitResultsAndCoords", stats);
}
void Engine::SetRankPivot(SearchParams const & params, m2::RectD const & viewport,
bool viewportSearch, Query & processor)
{
if (!viewportSearch && params.IsValidPosition())
{
m2::PointD const pos = MercatorBounds::FromLatLon(params.m_lat, params.m_lon);
if (m2::Inflate(viewport, viewport.SizeX() / 4.0, viewport.SizeY() / 4.0).IsPointInside(pos))
{
processor.SetRankPivot(pos);
return;
}
}
processor.SetRankPivot(viewport.Center());
}
void Engine::DoSearch(SearchParams const & params, m2::RectD const & viewport,
shared_ptr<QueryHandle> handle, Query & processor)
{
bool const viewportSearch = params.GetMode() == Mode::Viewport;
// Initialize query processor.
processor.Init(viewportSearch);
handle->Attach(processor);
MY_SCOPE_GUARD(detach, [&handle] { handle->Detach(); });
// Early exit when query processing is cancelled.
if (processor.IsCancelled())
{
params.m_onResults(Results::GetEndMarker(true /* isCancelled */));
return;
}
SetRankPivot(params, viewport, viewportSearch, processor);
if (params.IsValidPosition())
processor.SetPosition(MercatorBounds::FromLatLon(params.m_lat, params.m_lon));
else
processor.SetPosition(viewport.Center());
processor.SetMode(params.GetMode());
processor.SetSuggestsEnabled(params.GetSuggestsEnabled());
// This flag is needed for consistency with old search algorithm
// only. It will be gone when we remove old search code.
processor.SetSearchInWorld(true);
processor.SetInputLocale(params.m_inputLocale);
ASSERT(!params.m_query.empty(), ());
processor.SetQuery(params.m_query);
Results res;
processor.SearchCoordinates(res);
try
{
if (params.m_onStarted)
params.m_onStarted();
processor.SetViewport(viewport, true /* forceUpdate */);
if (viewportSearch)
processor.SearchViewportPoints(res);
else
processor.Search(res, kResultsCount);
if (!processor.IsCancelled())
EmitResults(params, res);
}
catch (Query::CancelException const &)
{
LOG(LDEBUG, ("Search has been cancelled."));
}
if (!viewportSearch && !processor.IsCancelled())
SendStatistics(params, viewport, res);
// Emit finish marker to client.
params.m_onResults(Results::GetEndMarker(processor.IsCancelled()));
}