StatusWith<RecordId> KVRecordStore::updateRecord(OperationContext* txn,
const RecordId& id,
const char* data,
int len,
bool enforceQuota,
UpdateNotifier* notifier) {
const KeyString key(id);
const Slice value(data, len);
int64_t numRecordsDelta = 0;
int64_t dataSizeDelta = value.size();
Slice val;
Status status = _db->get(txn, Slice::of(key), val, false);
if (status.code() == ErrorCodes::NoSuchKey) {
numRecordsDelta += 1;
} else if (status.isOK()) {
dataSizeDelta -= val.size();
} else {
return StatusWith<RecordId>(status);
}
// An update with a complete new image (data, len) is implemented as an overwrite insert.
status = _db->insert(txn, Slice::of(key), value, false);
if (!status.isOK()) {
return StatusWith<RecordId>(status);
}
_updateStats(txn, numRecordsDelta, dataSizeDelta);
return StatusWith<RecordId>(id);
}
void KVRecordStore::deleteRecord(OperationContext* txn, const RecordId& id) {
const KeyString key(id);
Slice val;
Status s = _db->get(txn, Slice::of(key), val, false);
invariantKVOK(s, str::stream() << "KVRecordStore: couldn't find record " << id << " for delete: " << s.toString());
_updateStats(txn, -1, -val.size());
s = _db->remove(txn, Slice::of(key));
invariant(s.isOK());
}
Status KVRecordStore::_insertRecord(OperationContext *txn,
const RecordId &id,
const Slice &value) {
const KeyString key(id);
DEV {
// Should never overwrite an existing record.
Slice v;
const Status status = _db->get(txn, Slice::of(key), v, true);
invariant(status.code() == ErrorCodes::NoSuchKey);
}
Status s = _db->insert(txn, Slice::of(key), value, true);
if (!s.isOK()) {
return s;
}
_updateStats(txn, 1, value.size());
return s;
}
StatisticsDisplayWidget::StatisticsDisplayWidget(const std::string& title,QWidget* parent) :
QDockWidget(parent),
_tabWidget(0),
_title(QString::fromStdString(title)),
_updatePending(false)
{
//create tab widget with one tab for each input image
this->setObjectName(QString("Statistics")) ;
_tabWidget = new QTabWidget(this) ;
_tabWidget->setUsesScrollButtons(true) ;
_tabWidget->setTabPosition(QTabWidget::East) ;
_tabWidget->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum) ;
this->setWidget(_tabWidget) ;
this->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea) ;
this->setWindowTitle(QString("StatisticsDisplay [") + _title + QString("]") ) ;
this->setFeatures(QDockWidget::DockWidgetMovable | QDockWidget::DockWidgetFloatable) ;
connect(this, SIGNAL(statsUpdated()), this, SLOT(_updateStats()), Qt::QueuedConnection) ;
}
