Merge pull request #2801 from sandman7920/master

QTableView int32_t overflow workaround

src/Settings.cpp

@@ -297,6 +297,8 @@ QVariant Settings::getDefaultValue(const std::string& group, const std::string&
             return 10;
         if(name == "symbol_limit")
             return 5000;
+        if (name == "rows_limit")
+            return 10'000'000;
         if(name == "complete_threshold")
             return 1000;
         if(name == "image_preview")

src/TableBrowser.cpp

@@ -727,6 +727,7 @@ void TableBrowser::updateRecordsetLabel()
     // Get all the numbers, i.e. the number of the first row and the last row as well as the total number of rows
     int from = ui->dataTable->verticalHeader()->visualIndexAt(0) + 1;
     int total = m_model->rowCount();
+    int real_total = m_model->realRowCount();
     int to = from + ui->dataTable->numVisibleRows() - 1;
     if(to < 0)
             to = 0;
@@ -757,10 +758,13 @@ void TableBrowser::updateRecordsetLabel()
         txt = tr("determining row count...");
         break;
     case SqliteTableModel::RowCount::Partial:
-        txt = tr("%1 - %2 of >= %3").arg(from).arg(to).arg(total);
+        txt = tr("%L1 - %L2 of >= %L3").arg(from).arg(to).arg(total);
         break;
     case SqliteTableModel::RowCount::Complete:
-        txt = tr("%1 - %2 of %3").arg(from).arg(to).arg(total);
+        txt = tr("%L1 - %L2 of %L3").arg(from).arg(to).arg(real_total);
+        if (real_total != total) {
+            txt.append(tr(" (clipped at %L1 rows)").arg(total));
+        }
         break;
     }
     ui->labelRecordset->setText(txt);

src/sqlitetablemodel.cpp

@@ -24,6 +24,7 @@ SqliteTableModel::SqliteTableModel(DBBrowserDB& db, QObject* parent, const QStri
     , m_db(db)
     , m_lifeCounter(0)
     , m_currentRowCount(0)
+    , m_realRowCount(0)
     , m_encoding(encoding)
 {
     // Load initial settings first
@@ -94,6 +95,11 @@ void SqliteTableModel::handleRowCountComplete (int life_id, int num_rows)
     if(life_id < m_lifeCounter)
         return;
 
+    m_realRowCount = static_cast<unsigned int>(num_rows);
+    if (num_rows > m_rowsLimit) {
+        num_rows = m_rowsLimit;
+    }
+
     m_rowCountAvailable = RowCount::Complete;
     handleFinishedFetch(life_id, static_cast<unsigned int>(num_rows), static_cast<unsigned int>(num_rows));
 
@@ -175,6 +181,11 @@ int SqliteTableModel::rowCount(const QModelIndex&) const
     return static_cast<int>(m_currentRowCount);
 }
 
+int SqliteTableModel::realRowCount() const
+{
+    return static_cast<int>(m_realRowCount);
+}
+
 int SqliteTableModel::columnCount(const QModelIndex&) const
 {
     return static_cast<int>(m_headers.size());
@@ -662,6 +673,7 @@ bool SqliteTableModel::insertRows(int row, int count, const QModelIndex& parent)
     {
         m_cache.insert(i + static_cast<size_t>(row), std::move(tempList.at(i)));
         m_currentRowCount++;
+        m_realRowCount++;
     }
     endInsertRows();
 
@@ -695,6 +707,7 @@ bool SqliteTableModel::removeRows(int row, int count, const QModelIndex& parent)
         {
             m_cache.erase(static_cast<size_t>(row + i));
             m_currentRowCount--;
+            m_realRowCount--;
         }
 
         endRemoveRows();
@@ -837,6 +850,7 @@ void SqliteTableModel::clearCache()
     m_cache.clear();
 
     m_currentRowCount = 0;
+    m_realRowCount = 0;
     m_rowCountAvailable = RowCount::Unknown;
 }
 
@@ -1137,6 +1151,7 @@ void SqliteTableModel::reloadSettings()
     m_font = QFont(Settings::getValue("databrowser", "font").toString());
     m_font.setPointSize(Settings::getValue("databrowser", "fontsize").toInt());
     m_symbolLimit = Settings::getValue("databrowser", "symbol_limit").toInt();
+    m_rowsLimit = Settings::getValue("databrowser", "rows_limit").toInt();
     m_imagePreviewEnabled = Settings::getValue("databrowser", "image_preview").toBool();
     m_chunkSize = static_cast<std::size_t>(Settings::getValue("db", "prefetchsize").toUInt());
 }

src/sqlitetablemodel.h

@@ -35,6 +35,7 @@ public:
 
     /// returns logical amount of rows, whether currently cached or not
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    int realRowCount() const;
 
     int columnCount(const QModelIndex &parent = QModelIndex()) const override;
     size_t filterCount() const;
@@ -191,6 +192,7 @@ private:
     /// the full row count, when the row-count query returns)
     RowCount m_rowCountAvailable;
     unsigned int m_currentRowCount;
+    unsigned int m_realRowCount;
 
     std::vector<std::string> m_headers;
 
@@ -239,6 +241,7 @@ private:
     QColor m_binBgColour;
     QFont m_font;
     int m_symbolLimit;
+    int m_rowsLimit;
     bool m_imagePreviewEnabled;
 
     /**