QtSql: cleanup QSqlDriverPrivate and QSqlResultPrivate

Cleanup QSqlDriverPrivate/QSqlResultPrivate and their derived classes
in ODBC, MySql, PostgreSQL and SQLite.

Change-Id: I52e69c00cf981b81dde7c3a0370f86f06ef756bb
Reviewed-by: Andy Shaw <andy.shaw@qt.io>

1 files changed, 8 insertions, 17 deletions

diff --git a/src/plugins/sqldrivers/sqlite/qsql_sqlite.cpp b/src/plugins/sqldrivers/sqlite/qsql_sqlite.cpp
index 551d762434..5eb9e7d2f8 100644
--- a/src/plugins/sqldrivers/sqlite/qsql_sqlite.cpp
+++ b/src/plugins/sqldrivers/sqlite/qsql_sqlite.cpp
@@ -144,42 +144,33 @@ class QSQLiteDriverPrivate : public QSqlDriverPrivate
     Q_DECLARE_PUBLIC(QSQLiteDriver)
 
 public:
-    inline QSQLiteDriverPrivate() : QSqlDriverPrivate(), access(0) { dbmsType = QSqlDriver::SQLite; }
-    sqlite3 *access;
-    QList <QSQLiteResult *> results;
+    inline QSQLiteDriverPrivate() : QSqlDriverPrivate(QSqlDriver::SQLite) {}
+    sqlite3 *access = nullptr;
+    QVector<QSQLiteResult *> results;
     QStringList notificationid;
 };
 
 
-class QSQLiteResultPrivate: public QSqlCachedResultPrivate
+class QSQLiteResultPrivate : public QSqlCachedResultPrivate
 {
     Q_DECLARE_PUBLIC(QSQLiteResult)
 
 public:
     Q_DECLARE_SQLDRIVER_PRIVATE(QSQLiteDriver)
-    QSQLiteResultPrivate(QSQLiteResult *q, const QSQLiteDriver *drv);
+    using QSqlCachedResultPrivate::QSqlCachedResultPrivate;
     void cleanup();
     bool fetchNext(QSqlCachedResult::ValueCache &values, int idx, bool initialFetch);
     // initializes the recordInfo and the cache
     void initColumns(bool emptyResultset);
     void finalize();
 
-    sqlite3_stmt *stmt;
-
-    bool skippedStatus; // the status of the fetchNext() that's skipped
-    bool skipRow; // skip the next fetchNext()?
+    sqlite3_stmt *stmt = nullptr;
     QSqlRecord rInf;
     QVector<QVariant> firstRow;
+    bool skippedStatus = false; // the status of the fetchNext() that's skipped
+    bool skipRow = false; // skip the next fetchNext()?
 };
 
-QSQLiteResultPrivate::QSQLiteResultPrivate(QSQLiteResult *q, const QSQLiteDriver *drv)
-    : QSqlCachedResultPrivate(q, drv),
-      stmt(0),
-      skippedStatus(false),
-      skipRow(false)
-{
-}
-
 void QSQLiteResultPrivate::cleanup()
 {
     Q_Q(QSQLiteResult);