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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtSql module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qsqldriverplugin.h" |
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43 |
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44 QT_BEGIN_NAMESPACE |
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45 |
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46 /*! |
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47 \class QSqlDriverPlugin |
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48 \brief The QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins. |
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49 |
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50 \ingroup plugins |
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51 \inmodule QtSql |
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52 |
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53 The SQL driver plugin is a simple plugin interface that makes it |
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54 easy to create your own SQL driver plugins that can be loaded |
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55 dynamically by Qt. |
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56 |
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57 Writing a SQL plugin is achieved by subclassing this base class, |
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58 reimplementing the pure virtual functions keys() and create(), and |
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59 exporting the class with the Q_EXPORT_PLUGIN2() macro. See the SQL |
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60 plugins that come with Qt for example implementations (in the |
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61 \c{plugins/src/sqldrivers} subdirectory of the source |
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62 distribution). |
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63 |
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64 \sa {How to Create Qt Plugins} |
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65 */ |
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66 |
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67 /*! |
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68 \fn QStringList QSqlDriverPlugin::keys() const |
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69 |
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70 Returns the list of drivers (keys) this plugin supports. |
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71 |
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72 These keys are usually the class names of the custom drivers that |
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73 are implemented in the plugin. |
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74 |
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75 \sa create() |
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76 */ |
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77 |
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78 /*! |
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79 \fn QSqlDriver *QSqlDriverPlugin::create(const QString& key) |
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80 |
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81 Creates and returns a QSqlDriver object for the driver called \a |
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82 key. The driver key is usually the class name of the required |
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83 driver. Keys are case sensitive. |
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84 |
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85 \sa keys() |
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86 */ |
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87 |
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88 /*! |
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89 Constructs a SQL driver plugin and sets the parent to \a parent. |
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90 This is invoked automatically by the Q_EXPORT_PLUGIN2() macro. |
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91 */ |
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92 |
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93 QSqlDriverPlugin::QSqlDriverPlugin(QObject *parent) |
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94 : QObject(parent) |
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95 { |
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96 } |
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97 |
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98 /*! |
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99 Destroys the SQL driver plugin. |
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100 |
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101 You never have to call this explicitly. Qt destroys a plugin |
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102 automatically when it is no longer used. |
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103 */ |
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104 QSqlDriverPlugin::~QSqlDriverPlugin() |
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105 { |
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106 } |
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107 |
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108 QT_END_NAMESPACE |