##// END OF EJS Templates
It's now possible to create the variable and ask data to be retreived...
It's now possible to create the variable and ask data to be retreived asynchronously

File last commit:

r319:c71a61da7f3d
r319:c71a61da7f3d
Show More
VariableController.cpp
177 lines | 5.7 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)) {
// 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);
this->onRequestDataLoading(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};
}