src/sql/kernel/qsqlnulldriver_p.h
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/sql/kernel/qsqlnulldriver_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSql module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSQLNULLDRIVER_P_H
+#define QSQLNULLDRIVER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  This header file may
+// change from version to version without notice, or even be
+// removed.
+//
+// We mean it.
+//
+
+#include "QtCore/qvariant.h"
+#include "QtSql/qsqldriver.h"
+#include "QtSql/qsqlerror.h"
+#include "QtSql/qsqlresult.h"
+
+QT_BEGIN_NAMESPACE
+
+class QSqlNullResult : public QSqlResult
+{
+public:
+    inline explicit QSqlNullResult(const QSqlDriver* d): QSqlResult(d)
+    { QSqlResult::setLastError(
+            QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); }
+protected:
+    inline QVariant data(int) { return QVariant(); }
+    inline bool reset (const QString&) { return false; }
+    inline bool fetch(int) { return false; }
+    inline bool fetchFirst() { return false; }
+    inline bool fetchLast() { return false; }
+    inline bool isNull(int) { return false; }
+    inline int size()  { return -1; }
+    inline int numRowsAffected() { return 0; }
+
+    inline void setAt(int) {}
+    inline void setActive(bool) {}
+    inline void setLastError(const QSqlError&) {}
+    inline void setQuery(const QString&) {}
+    inline void setSelect(bool) {}
+    inline void setForwardOnly(bool) {}
+
+    inline bool exec() { return false; }
+    inline bool prepare(const QString&) { return false; }
+    inline bool savePrepare(const QString&) { return false; }
+    inline void bindValue(int, const QVariant&, QSql::ParamType) {}
+    inline void bindValue(const QString&, const QVariant&, QSql::ParamType) {}
+};
+
+class QSqlNullDriver : public QSqlDriver
+{
+public:
+    inline QSqlNullDriver(): QSqlDriver()
+    { QSqlDriver::setLastError(
+            QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); }
+    inline bool hasFeature(DriverFeature) const { return false; }
+    inline bool open(const QString &, const QString & , const QString & ,
+              const QString &, int, const QString&)
+    { return false; }
+    inline void close() {}
+    inline QSqlResult *createResult() const { return new QSqlNullResult(this); }
+
+protected:
+    inline void setOpen(bool) {}
+    inline void setOpenError(bool) {}
+    inline void setLastError(const QSqlError&) {}
+};
+
+QT_END_NAMESPACE
+
+#endif // QSQLNULLDRIVER_P_H