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#include <Variable/Variable.h>
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#include <Variable/VariableCacheController.h>
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#include <Variable/VariableController.h>
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#include <Variable/VariableModel.h>
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#include <Data/DataProviderParameters.h>
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#include <Data/IDataProvider.h>
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#include <Data/IDataSeries.h>
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#include <Time/TimeController.h>
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#include <QDateTime>
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#include <QMutex>
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#include <QThread>
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#include <QtCore/QItemSelectionModel>
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#include <unordered_map>
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Q_LOGGING_CATEGORY(LOG_VariableController, "VariableController")
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namespace {
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/// @todo Generates default dataseries, according to the provider passed in parameter. This method
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/// will be deleted when the timerange is recovered from SciQlop
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std::shared_ptr<IDataSeries> generateDefaultDataSeries(const IDataProvider &provider,
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const SqpDateTime &dateTime) noexcept
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{
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auto parameters = DataProviderParameters{dateTime};
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return provider.retrieveData(parameters);
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}
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} // namespace
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struct VariableController::VariableControllerPrivate {
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explicit VariableControllerPrivate(VariableController *parent)
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: m_WorkingMutex{},
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m_VariableModel{new VariableModel{parent}},
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m_VariableSelectionModel{new QItemSelectionModel{m_VariableModel, parent}},
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m_VariableCacheController{std::make_unique<VariableCacheController>()}
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{
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}
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QMutex m_WorkingMutex;
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/// Variable model. The VariableController has the ownership
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VariableModel *m_VariableModel;
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QItemSelectionModel *m_VariableSelectionModel;
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TimeController *m_TimeController{nullptr};
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std::unique_ptr<VariableCacheController> m_VariableCacheController;
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std::unordered_map<std::shared_ptr<Variable>, std::shared_ptr<IDataProvider> >
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m_VariableToProviderMap;
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};
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VariableController::VariableController(QObject *parent)
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: QObject{parent}, impl{spimpl::make_unique_impl<VariableControllerPrivate>(this)}
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{
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qCDebug(LOG_VariableController())
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<< tr("VariableController construction") << QThread::currentThread();
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}
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VariableController::~VariableController()
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{
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qCDebug(LOG_VariableController())
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<< tr("VariableController destruction") << QThread::currentThread();
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this->waitForFinish();
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}
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VariableModel *VariableController::variableModel() noexcept
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{
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return impl->m_VariableModel;
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}
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QItemSelectionModel *VariableController::variableSelectionModel() noexcept
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{
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return impl->m_VariableSelectionModel;
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}
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void VariableController::setTimeController(TimeController *timeController) noexcept
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{
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impl->m_TimeController = timeController;
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}
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void VariableController::deleteVariable(std::shared_ptr<Variable> variable) noexcept
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{
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if (!variable) {
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qCCritical(LOG_VariableController()) << "Can't delete variable: variable is null";
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return;
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}
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// Spreads in SciQlop that the variable will be deleted, so that potential receivers can
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// make some treatments before the deletion
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emit variableAboutToBeDeleted(variable);
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// Deletes provider
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auto nbProvidersDeleted = impl->m_VariableToProviderMap.erase(variable);
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qCDebug(LOG_VariableController())
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<< tr("Number of providers deleted for variable %1: %2")
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.arg(variable->name(), QString::number(nbProvidersDeleted));
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// Clears cache
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impl->m_VariableCacheController->clear(variable);
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// Deletes from model
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impl->m_VariableModel->deleteVariable(variable);
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}
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void VariableController::deleteVariables(
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const QVector<std::shared_ptr<Variable> > &variables) noexcept
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{
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for (auto variable : qAsConst(variables)) {
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deleteVariable(variable);
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}
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}
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void VariableController::createVariable(const QString &name,
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std::shared_ptr<IDataProvider> provider) noexcept
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{
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if (!impl->m_TimeController) {
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qCCritical(LOG_VariableController())
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<< tr("Impossible to create variable: The time controller is null");
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return;
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}
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/// @todo : for the moment :
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/// - the provider is only used to retrieve data from the variable for its initialization, but
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/// it will be retained later
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/// - default data are generated for the variable, without taking into account the timerange set
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/// in sciqlop
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auto dateTime = impl->m_TimeController->dateTime();
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if (auto newVariable = impl->m_VariableModel->createVariable(name, dateTime)) {
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// store the provider
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impl->m_VariableToProviderMap[newVariable] = provider;
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auto addDateTimeAcquired = [ this, varW = std::weak_ptr<Variable>{newVariable} ](
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auto dataSeriesAcquired, auto dateTimeToPutInCache)
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{
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if (auto variable = varW.lock()) {
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impl->m_VariableCacheController->addDateTime(variable, dateTimeToPutInCache);
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variable->setDataSeries(dataSeriesAcquired);
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}
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};
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connect(provider.get(), &IDataProvider::dataProvided, addDateTimeAcquired);
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this->onRequestDataLoading(newVariable, dateTime);
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}
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}
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void VariableController::onDateTimeOnSelection(const SqpDateTime &dateTime)
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{
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qCDebug(LOG_VariableController())
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<< "VariableController::onDateTimeOnSelection" << QThread::currentThread()->objectName();
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auto selectedRows = impl->m_VariableSelectionModel->selectedRows();
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for (const auto &selectedRow : qAsConst(selectedRows)) {
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if (auto selectedVariable = impl->m_VariableModel->variable(selectedRow.row())) {
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selectedVariable->setDateTime(dateTime);
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this->onRequestDataLoading(selectedVariable, dateTime);
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}
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}
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}
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void VariableController::onRequestDataLoading(std::shared_ptr<Variable> variable,
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const SqpDateTime &dateTime)
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{
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qCDebug(LOG_VariableController())
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<< "VariableController::onRequestDataLoading" << QThread::currentThread()->objectName();
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// we want to load data of the variable for the dateTime.
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// First we check if the cache contains some of them.
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// For the other, we ask the provider to give them.
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if (variable) {
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auto dateTimeListNotInCache
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= impl->m_VariableCacheController->provideNotInCacheDateTimeList(variable, dateTime);
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if (!dateTimeListNotInCache.empty()) {
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// Ask the provider for each data on the dateTimeListNotInCache
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impl->m_VariableToProviderMap.at(variable)->requestDataLoading(
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std::move(dateTimeListNotInCache));
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}
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else {
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emit variable->updated();
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}
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}
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else {
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qCCritical(LOG_VariableController()) << tr("Impossible to load data of a variable null");
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}
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}
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void VariableController::initialize()
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{
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qCDebug(LOG_VariableController()) << tr("VariableController init") << QThread::currentThread();
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impl->m_WorkingMutex.lock();
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qCDebug(LOG_VariableController()) << tr("VariableController init END");
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}
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void VariableController::finalize()
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{
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impl->m_WorkingMutex.unlock();
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}
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void VariableController::waitForFinish()
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{
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QMutexLocker locker{&impl->m_WorkingMutex};
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}
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