Document DocumentSourceGroup::getCurrent() {
if (!populated)
populate();
dassert(!eof());
if (_spilled) {
return makeDocument(_currentId, _currentAccumulators, pExpCtx->getInShard());
} else {
return makeDocument(groupsIterator->first,
groupsIterator->second,
pExpCtx->getInShard());
}
}
//when getBusStopMessage(const QString&) download finishes
void ArrivalsLogic::onBusStopMessageReceived() {
QList<QJsonDocument> document = makeDocument(reply_busStopMessage);
if (document.empty()) { return; } //nothing to do
QJsonArray versionArray = document.begin()->array();
if (versionArray.begin() + 2 < versionArray.end() ) {
double serverTime = (*(versionArray.begin() + 2 )).toDouble();
QMultiMap<int,QString> messages;
for (QList<QJsonDocument>::const_iterator iter = document.begin() + 1; iter < document.end(); ++iter) {
if (iter->array().begin() + 4 < iter->array().end()) {
int priority = (*(iter->array().begin() + 1)).toDouble();
QString text = (*(iter->array().begin() + 2)).toString();
double startTime = (*(iter->array().begin() + 3)).toDouble();
double expireTime = (*(iter->array().begin() + 4)).toDouble();
if (startTime <= serverTime && expireTime >= serverTime) {
messages.insert(priority, text);
}
}
else {
qDebug() << "The array doesn't contain 4 elements.";
break;
}
}
fillCurrentStopMessages(messages);
}
else return;
}
//gets called when bus stop data is downloaded and ready to be processed
void ArrivalsLogic::onBusStopDataReceived() {
downloadingStop = false;
emit downloadStateChanged();
QList<QJsonDocument> document = makeDocument(reply_busStop);
//only want the second array as the first one is the version array and there are only 2 arrays
if (document.begin() + 1 >= document.end()) { return; } //there is nothing to do
QList<QJsonDocument>::iterator dataArray = document.begin() + 1;
if (currentStop) {
if (dataArray->isArray() ) {
if (dataArray->array().begin() + 6 >= dataArray->array().end()) { return; } //TODO throw
//id is set in ArrivalsLogic::getBusStopByCode(const QString&)
currentStop->setName( (*(dataArray->array().begin() + 1)).toString() );
currentStop->setTowards( (*(dataArray->array().begin() + 3)).toString() );
currentStop->setStopPointIndicator( (*(dataArray->array().begin() + 4)).toString() );
currentStop->setLatitude( (*(dataArray->array().begin() + 5)).toDouble() );
currentStop->setLongitude( (*(dataArray->array().begin() + 6)).toDouble() );
if ( (*(dataArray->array().begin() + 2)).toString() == QString("SLRS") ) {
currentStop->setType(Stop::River);
}
else { currentStop->setType(Stop::Bus); }
currentStop->updated();
emit stopDataChanged();
}
else qDebug() << "Invalid QJsonArray";
}
}
//gets called when bus progress data is downloaded and redy to be processed
void ArrivalsLogic::onBusProgressReceived() {
downloadingJourneyProgress = false;
emit downloadStateChanged();
QList<QJsonDocument> document = makeDocument(reply_journeyProgress);
if (document.begin() == document.end() ||
document.begin()->array().begin() + 2 >= document.begin()->array().end()) {
return;
}//nothing to do
double serverTime = (*(document.begin()->array().begin() +2)).toDouble();
//BUG check why list might be empty, server or client error
QList<QPair<QString, double>> list;
if (document.begin() + 1 >= document.end()) {
}
for (QList<QJsonDocument>::iterator iter = document.begin() + 1; iter < document.end(); ++iter) {
if (iter->array().begin() +2 >= iter->array().end()) {
//TODO throw
break;
}
QPair<QString, double> pair;
pair.first = (*(iter->array().begin() +1)).toString();
pair.second = (*(iter->array().begin() +2)).toDouble();
list.append(pair);
}
if (journeyProgressContainer) {
journeyProgressContainer->setTime(serverTime);
journeyProgressContainer->refreshData(list);
}
}
//gets called when bus arrivals are downloaded and ready to be processed
void ArrivalsLogic::onArrivalsDataReceived() {
downloadingArrivals = false;
emit downloadStateChanged();
QList<QJsonDocument> document = makeDocument(reply_arrivals);
QList<QJsonDocument>::iterator first = document.begin();
//server time UTC in msec from Epoch at the time of request
//use this to compare with expected arrival time, if device clock is not correctly set
//the arrival times are still accurately presented to user
if (first->array().begin() +2 >= first->array().end() ) { return; } //currentTime would be invalid
double currentTime = (*(first->array().begin() +2)).toDouble();
ArrivalsContainer tempContainer(arrivalsModel);
for (QList<QJsonDocument>::iterator iter = first + 1; iter < document.end(); ++iter) {
Vehicle bus;
if (iter->array().begin() + 5 >= iter->array().end() ) {
qDebug() << "";
//TODO throw exception
break;
}
bus.line = (*(iter->array().begin() + 1)).toString();
currentBusDirectionId = QString::number((*(iter->array().begin() + 2)).toDouble());
bus.destination = (*(iter->array().begin() + 3)).toString();
bus.id = (*(iter->array().begin() + 4)).toString();//registration number
double delta = (*(iter->array().begin() + 5)).toDouble() - currentTime;
double inSec = delta / 1000;
double inMins = inSec / 60;
//round to whole numbers
bus.eta = std::round(inMins);
tempContainer.add(bus);
}
if (arrivalsContainer) {
arrivalsContainer->replace(tempContainer);
}
}
void DocumentSourceGroup::populate() {
for(bool hasNext = !pSource->eof(); hasNext;
hasNext = pSource->advance()) {
intrusive_ptr<Document> pDocument(pSource->getCurrent());
/* get the _id document */
intrusive_ptr<const Value> pId(pIdExpression->evaluate(pDocument));
/* treat Undefined the same as NULL SERVER-4674 */
if (pId->getType() == Undefined)
pId = Value::getNull();
/*
Look for the _id value in the map; if it's not there, add a
new entry with a blank accumulator.
*/
vector<intrusive_ptr<Accumulator> > *pGroup;
GroupsType::iterator it(groups.find(pId));
if (it != groups.end()) {
/* point at the existing accumulators */
pGroup = &it->second;
}
else {
/* insert a new group into the map */
groups.insert(it,
pair<intrusive_ptr<const Value>,
vector<intrusive_ptr<Accumulator> > >(
pId, vector<intrusive_ptr<Accumulator> >()));
/* find the accumulator vector (the map value) */
it = groups.find(pId);
pGroup = &it->second;
/* add the accumulators */
const size_t n = vpAccumulatorFactory.size();
pGroup->reserve(n);
for(size_t i = 0; i < n; ++i) {
intrusive_ptr<Accumulator> pAccumulator(
(*vpAccumulatorFactory[i])(pExpCtx));
pAccumulator->addOperand(vpExpression[i]);
pGroup->push_back(pAccumulator);
}
}
/* point at the existing key */
// unneeded atm // pId = it.first;
/* tickle all the accumulators for the group we found */
const size_t n = pGroup->size();
for(size_t i = 0; i < n; ++i)
(*pGroup)[i]->evaluate(pDocument);
}
/* start the group iterator */
groupsIterator = groups.begin();
if (groupsIterator != groups.end())
pCurrent = makeDocument(groupsIterator);
populated = true;
}
bool DocumentSourceGroup::advance() {
if (!populated)
populate();
assert(groupsIterator != groups.end());
++groupsIterator;
if (groupsIterator == groups.end()) {
pCurrent.reset();
return false;
}
pCurrent = makeDocument(groupsIterator);
return true;
}
bool DocumentSourceGroup::advance() {
DocumentSource::advance(); // check for interrupts
if (!populated)
populate();
verify(groupsIterator != groups.end());
++groupsIterator;
if (groupsIterator == groups.end()) {
pCurrent.reset();
return false;
}
pCurrent = makeDocument(groupsIterator);
return true;
}
//gets called when the list of bus stops are downloaded by getBusStopsByName(name)
void ArrivalsLogic::onListOfBusStopsReceived() {
downloadingListOfStops = false;
emit downloadStateChanged();
QList<QJsonDocument> document = makeDocument(reply_stops);
QString stopPointType;
//skip version array
for (QList<QJsonDocument>::const_iterator iter = document.begin() + 1;iter < document.end();++iter) {
if (iter->array().begin() + 7 >= iter->array().end()) {
break;
} //TODO throw
Stop stop(databaseManager);
stop.setName((*(iter->array().begin() + 1)).toString());
stop.setID((*(iter->array().begin() + 2)).toString());
stop.setTowards((*(iter->array().begin() + 4)).toString());
stop.setStopPointIndicator((*(iter->array().begin() + 5)).toString());
stop.setLatitude((*(iter->array().begin() + 6)).toDouble());
stop.setLongitude((*(iter->array().begin() + 7)).toDouble());
stopPointType = (*(iter->array().begin() + 3)).toString();
if ( stopPointType == QString("SLRS")) {
stop.setType(Stop::River);
}
else {
stop.setType(Stop::Bus);
}
//The meaning of these codes are documented in the Bus arrivals API documentation
//only display sstops with these codes
if (stopPointType == "STBR" || stopPointType == "STBC" || stopPointType == "SRVA" ||
stopPointType == "STZZ" || stopPointType == "STBN" || stopPointType == "SLRS" ||
stopPointType == "STBS" || stopPointType == "STSS") {
//to prevent a bug when server returns a stop where code isNull() ie: Hammersmith Bus Station
if (!(*(iter->array().begin() + 2)).isNull()) { stop.addToDb(); }
}
}
if (stopsQueryModel) {
stopsQueryModel->showStops(Stop::Bus);
}
}