| 1 | /**************************************************************************** | 
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| 2 | ** | 
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| 3 | ** Copyright (C) 2016 The Qt Company Ltd. | 
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| 4 | ** Contact: https://www.qt.io/licensing/ | 
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| 5 | ** | 
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| 6 | ** This file is part of the QtSql module of the Qt Toolkit. | 
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| 7 | ** | 
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| 8 | ** $QT_BEGIN_LICENSE:LGPL$ | 
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| 9 | ** Commercial License Usage | 
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| 10 | ** Licensees holding valid commercial Qt licenses may use this file in | 
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| 11 | ** accordance with the commercial license agreement provided with the | 
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| 12 | ** Software or, alternatively, in accordance with the terms contained in | 
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| 13 | ** a written agreement between you and The Qt Company. For licensing terms | 
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| 14 | ** and conditions see https://www.qt.io/terms-conditions. For further | 
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| 15 | ** information use the contact form at https://www.qt.io/contact-us. | 
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| 16 | ** | 
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| 17 | ** GNU Lesser General Public License Usage | 
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| 18 | ** Alternatively, this file may be used under the terms of the GNU Lesser | 
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| 19 | ** General Public License version 3 as published by the Free Software | 
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| 20 | ** Foundation and appearing in the file LICENSE.LGPL3 included in the | 
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| 21 | ** packaging of this file. Please review the following information to | 
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| 22 | ** ensure the GNU Lesser General Public License version 3 requirements | 
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| 23 | ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. | 
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| 24 | ** | 
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| 25 | ** GNU General Public License Usage | 
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| 26 | ** Alternatively, this file may be used under the terms of the GNU | 
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| 27 | ** General Public License version 2.0 or (at your option) the GNU General | 
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| 28 | ** Public license version 3 or any later version approved by the KDE Free | 
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| 29 | ** Qt Foundation. The licenses are as published by the Free Software | 
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| 30 | ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 | 
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| 31 | ** included in the packaging of this file. Please review the following | 
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| 32 | ** information to ensure the GNU General Public License requirements will | 
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| 33 | ** be met: https://www.gnu.org/licenses/gpl-2.0.html and | 
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| 34 | ** https://www.gnu.org/licenses/gpl-3.0.html. | 
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| 35 | ** | 
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| 36 | ** $QT_END_LICENSE$ | 
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| 37 | ** | 
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| 38 | ****************************************************************************/ | 
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| 39 |  | 
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| 40 | #include "qsqldriverplugin.h" | 
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| 41 |  | 
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| 42 | QT_BEGIN_NAMESPACE | 
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| 43 |  | 
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| 44 | /*! | 
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| 45 | \class QSqlDriverPlugin | 
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| 46 | \brief The QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins. | 
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| 47 |  | 
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| 48 | \ingroup plugins | 
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| 49 | \inmodule QtSql | 
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| 50 |  | 
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| 51 | The SQL driver plugin is a simple plugin interface that makes it | 
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| 52 | easy to create your own SQL driver plugins that can be loaded | 
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| 53 | dynamically by Qt. | 
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| 54 |  | 
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| 55 | Writing a SQL plugin is achieved by subclassing this base class, | 
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| 56 | reimplementing the pure virtual function create(), and | 
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| 57 | exporting the class with the Q_PLUGIN_METADATA() macro. See the SQL | 
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| 58 | plugins that come with Qt for example implementations (in the | 
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| 59 | \c{plugins/src/sqldrivers} subdirectory of the source | 
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| 60 | distribution). | 
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| 61 |  | 
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| 62 | The json file containing the metadata for the plugin contains a list of | 
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| 63 | keys indicating the supported sql drivers | 
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| 64 |  | 
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| 65 | \code | 
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| 66 | { "Keys": [ "mysqldriver" ] } | 
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| 67 | \endcode | 
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| 68 |  | 
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| 69 | \sa {How to Create Qt Plugins} | 
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| 70 | */ | 
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| 71 |  | 
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| 72 | /*! | 
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| 73 | \fn QSqlDriver *QSqlDriverPlugin::create(const QString& key) | 
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| 74 |  | 
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| 75 | Creates and returns a QSqlDriver object for the driver called \a | 
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| 76 | key. The driver key is usually the class name of the required | 
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| 77 | driver. Keys are case sensitive. | 
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| 78 |  | 
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| 79 | \sa {How to Create Qt Plugins} | 
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| 80 | */ | 
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| 81 |  | 
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| 82 | /*! | 
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| 83 | Constructs a SQL driver plugin and sets the parent to \a parent. | 
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| 84 | This is invoked automatically by the moc generated code that exports the plugin. | 
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| 85 | */ | 
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| 86 |  | 
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| 87 | QSqlDriverPlugin::QSqlDriverPlugin(QObject *parent) | 
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| 88 | : QObject(parent) | 
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| 89 | { | 
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| 90 | } | 
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| 91 |  | 
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| 92 | /*! | 
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| 93 | Destroys the SQL driver plugin. | 
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| 94 |  | 
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| 95 | You never have to call this explicitly. Qt destroys a plugin | 
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| 96 | automatically when it is no longer used. | 
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| 97 | */ | 
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| 98 | QSqlDriverPlugin::~QSqlDriverPlugin() | 
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| 99 | { | 
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| 100 | } | 
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| 101 |  | 
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| 102 | QT_END_NAMESPACE | 
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| 103 |  | 
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