##// END OF EJS Templates
The cache is now updated only if date requested has been successfully...
The cache is now updated only if date requested has been successfully acquired

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r293:fc4b2122dbde
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VariableController.cpp
181 lines | 5.8 KiB | text/x-c | CppLexer
/ core / src / Variable / VariableController.cpp
#include <Variable/Variable.h>
#include <Variable/VariableCacheController.h>
#include <Variable/VariableController.h>
#include <Variable/VariableModel.h>
#include <Data/DataProviderParameters.h>
#include <Data/IDataProvider.h>
#include <Data/IDataSeries.h>
#include <Time/TimeController.h>
#include <QDateTime>
#include <QMutex>
#include <QThread>
#include <QtCore/QItemSelectionModel>
#include <unordered_map>
Q_LOGGING_CATEGORY(LOG_VariableController, "VariableController")
namespace {
/// @todo Generates default dataseries, according to the provider passed in parameter. This method
/// will be deleted when the timerange is recovered from SciQlop
std::shared_ptr<IDataSeries> generateDefaultDataSeries(const IDataProvider &provider,
const SqpDateTime &dateTime) noexcept
{
auto parameters = DataProviderParameters{dateTime};
return provider.retrieveData(parameters);
}
} // namespace
struct VariableController::VariableControllerPrivate {
explicit VariableControllerPrivate(VariableController *parent)
: m_WorkingMutex{},
m_VariableModel{new VariableModel{parent}},
m_VariableSelectionModel{new QItemSelectionModel{m_VariableModel, parent}},
m_VariableCacheController{std::make_unique<VariableCacheController>()}
{
}
QMutex m_WorkingMutex;
/// Variable model. The VariableController has the ownership
VariableModel *m_VariableModel;
QItemSelectionModel *m_VariableSelectionModel;
TimeController *m_TimeController{nullptr};
std::unique_ptr<VariableCacheController> m_VariableCacheController;
std::unordered_map<std::shared_ptr<Variable>, std::shared_ptr<IDataProvider> >
m_VariableToProviderMap;
};
VariableController::VariableController(QObject *parent)
: QObject{parent}, impl{spimpl::make_unique_impl<VariableControllerPrivate>(this)}
{
qCDebug(LOG_VariableController()) << tr("VariableController construction")
<< QThread::currentThread();
}
VariableController::~VariableController()
{
qCDebug(LOG_VariableController()) << tr("VariableController destruction")
<< QThread::currentThread();
this->waitForFinish();
}
VariableModel *VariableController::variableModel() noexcept
{
return impl->m_VariableModel;
}
QItemSelectionModel *VariableController::variableSelectionModel() noexcept
{
return impl->m_VariableSelectionModel;
}
void VariableController::setTimeController(TimeController *timeController) noexcept
{
impl->m_TimeController = timeController;
}
void VariableController::createVariable(const QString &name,
std::shared_ptr<IDataProvider> provider) noexcept
{
if (!impl->m_TimeController) {
qCCritical(LOG_VariableController())
<< tr("Impossible to create variable: The time controller is null");
return;
}
/// @todo : for the moment :
/// - the provider is only used to retrieve data from the variable for its initialization, but
/// it will be retained later
/// - default data are generated for the variable, without taking into account the timerange set
/// in sciqlop
auto dateTime = impl->m_TimeController->dateTime();
if (auto newVariable = impl->m_VariableModel->createVariable(
name, dateTime, generateDefaultDataSeries(*provider, dateTime))) {
// store the provider
impl->m_VariableToProviderMap[newVariable] = provider;
auto addDateTimeAcquired
= [this, newVariable](auto dataSeriesAcquired, auto dateTimeToPutInCache) {
impl->m_VariableCacheController->addDateTime(newVariable, dateTimeToPutInCache);
newVariable->setDataSeries(dataSeriesAcquired);
};
connect(provider.get(), &IDataProvider::dataProvided, addDateTimeAcquired);
// store in cache
impl->m_VariableCacheController->addDateTime(newVariable, dateTime);
// notify the creation
emit variableCreated(newVariable);
}
}
void VariableController::onDateTimeOnSelection(const SqpDateTime &dateTime)
{
auto selectedRows = impl->m_VariableSelectionModel->selectedRows();
for (const auto &selectedRow : qAsConst(selectedRows)) {
if (auto selectedVariable = impl->m_VariableModel->variable(selectedRow.row())) {
selectedVariable->setDateTime(dateTime);
this->onRequestDataLoading(selectedVariable, dateTime);
}
}
}
void VariableController::onRequestDataLoading(std::shared_ptr<Variable> variable,
const SqpDateTime &dateTime)
{
// we want to load data of the variable for the dateTime.
// First we check if the cache contains some of them.
// For the other, we ask the provider to give them.
if (variable) {
auto dateTimeListNotInCache
= impl->m_VariableCacheController->provideNotInCacheDateTimeList(variable, dateTime);
if (!dateTimeListNotInCache.empty()) {
// Ask the provider for each data on the dateTimeListNotInCache
impl->m_VariableToProviderMap.at(variable)->requestDataLoading(
std::move(dateTimeListNotInCache));
}
else {
emit variable->updated();
}
}
else {
qCCritical(LOG_VariableController()) << tr("Impossible to load data of a variable null");
}
}
void VariableController::initialize()
{
qCDebug(LOG_VariableController()) << tr("VariableController init") << QThread::currentThread();
impl->m_WorkingMutex.lock();
qCDebug(LOG_VariableController()) << tr("VariableController init END");
}
void VariableController::finalize()
{
impl->m_WorkingMutex.unlock();
}
void VariableController::waitForFinish()
{
QMutexLocker locker{&impl->m_WorkingMutex};
}