Long live Qt 4.5!

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diff --git a/src/sql/kernel/qsqlerror.cpp b/src/sql/kernel/qsqlerror.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qsqlerror.h"
+#include "qdebug.h"
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_NO_DEBUG_STREAM
+QDebug operator<<(QDebug dbg, const QSqlError &s)
+{
+    dbg.nospace() << "QSqlError(" << s.number() << ", " << s.driverText() <<
+                     ", " << s.databaseText() << ")";
+    return dbg.space();
+}
+#endif
+
+/*!
+    \class QSqlError
+    \brief The QSqlError class provides SQL database error information.
+
+    \ingroup database
+    \inmodule QtSql
+
+    A QSqlError object can provide database-specific error data,
+    including the driverText() and databaseText() messages (or both
+    concatenated together as text()), and the error number() and
+    type(). The functions all have setters so that you can create and
+    return QSqlError objects from your own classes, for example from
+    your own SQL drivers.
+
+    \sa QSqlDatabase::lastError(), QSqlQuery::lastError()
+*/
+
+/*!
+    \enum QSqlError::ErrorType
+
+    This enum type describes the context in which the error occurred, e.g., a connection error, a statement error, etc.
+
+    \value NoError  No error occurred.
+    \value ConnectionError  Connection error.
+    \value StatementError  SQL statement syntax error.
+    \value TransactionError  Transaction failed error.
+    \value UnknownError  Unknown error.
+
+    \omitvalue None
+    \omitvalue Connection
+    \omitvalue Statement
+    \omitvalue Transaction
+    \omitvalue Unknown
+*/
+
+/*!
+    Constructs an error containing the driver error text \a
+    driverText, the database-specific error text \a databaseText, the
+    type \a type and the optional error number \a number.
+*/
+
+QSqlError::QSqlError(const QString& driverText, const QString& databaseText, ErrorType type,
+                    int number)
+    : driverError(driverText), databaseError(databaseText), errorType(type), errorNumber(number)
+{
+}
+
+/*!
+    Creates a copy of \a other.
+*/
+QSqlError::QSqlError(const QSqlError& other)
+    : driverError(other.driverError), databaseError(other.databaseError),
+      errorType(other.errorType),
+      errorNumber(other.errorNumber)
+{
+}
+
+/*!
+    Assigns the \a other error's values to this error.
+*/
+
+QSqlError& QSqlError::operator=(const QSqlError& other)
+{
+    driverError = other.driverError;
+    databaseError = other.databaseError;
+    errorType = other.errorType;
+    errorNumber = other.errorNumber;
+    return *this;
+}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+
+QSqlError::~QSqlError()
+{
+}
+
+/*!
+    Returns the text of the error as reported by the driver. This may
+    contain database-specific descriptions. It may also be empty.
+
+    \sa setDriverText() databaseText() text()
+*/
+QString QSqlError::driverText() const
+{
+    return driverError;
+}
+
+/*!
+    Sets the driver error text to the value of \a driverText.
+
+    \sa driverText() setDatabaseText() text()
+*/
+
+void QSqlError::setDriverText(const QString& driverText)
+{
+    driverError = driverText;
+}
+
+/*!
+    Returns the text of the error as reported by the database. This
+    may contain database-specific descriptions; it may be empty.
+
+    \sa setDatabaseText() driverText() text()
+*/
+
+QString QSqlError::databaseText() const
+{
+    return databaseError;
+}
+
+/*!
+    Sets the database error text to the value of \a databaseText.
+
+    \sa databaseText() setDriverText() text()
+*/
+
+void QSqlError::setDatabaseText(const QString& databaseText)
+{
+    databaseError = databaseText;
+}
+
+/*!
+    Returns the error type, or -1 if the type cannot be determined.
+
+    \sa setType()
+*/
+
+QSqlError::ErrorType QSqlError::type() const
+{
+    return errorType;
+}
+
+/*!
+    Sets the error type to the value of \a type.
+
+    \sa type()
+*/
+
+void QSqlError::setType(ErrorType type)
+{
+    errorType = type;
+}
+
+/*!
+    Returns the database-specific error number, or -1 if it cannot be
+    determined.
+
+    \sa setNumber()
+*/
+
+int QSqlError::number() const
+{
+    return errorNumber;
+}
+
+/*!
+    Sets the database-specific error number to \a number.
+
+    \sa number()
+*/
+
+void QSqlError::setNumber(int number)
+{
+    errorNumber = number;
+}
+
+/*!
+    This is a convenience function that returns databaseText() and
+    driverText() concatenated into a single string.
+
+    \sa driverText() databaseText()
+*/
+
+QString QSqlError::text() const
+{
+    QString result = databaseError;
+    if (!databaseError.endsWith(QLatin1String("\n")))
+        result += QLatin1Char(' ');
+    result += driverError;
+    return result;
+}
+
+/*!
+    Returns true if an error is set, otherwise false.
+
+    Example:
+    \snippet doc/src/snippets/code/src_sql_kernel_qsqlerror.cpp 0
+
+    \sa type()
+*/
+bool QSqlError::isValid() const
+{
+    return errorType != NoError;
+}
+
+QT_END_NAMESPACE