Eneboo - Documentación para desarrolladores
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The QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins. Más...
#include <qsqldriverplugin.h>
Métodos públicos | |
QSqlDriverPlugin () | |
~QSqlDriverPlugin () | |
virtual QStringList | keys () const =0 |
virtual QSqlDriver * | create (const QString &key)=0 |
QSqlDriverPlugin () | |
~QSqlDriverPlugin () | |
virtual QStringList | keys () const =0 |
virtual QSqlDriver * | create (const QString &key)=0 |
The QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins.
The SQL driver plugin is a simple plugin interface that makes it easy to create your own SQL driver plugins that can be loaded dynamically by Qt.
Writing a SQL plugin is achieved by subclassing this base class, reimplementing the pure virtual functions keys() and create(), and exporting the class with the Q_EXPORT_PLUGIN
macro. See the SQL plugins that come with Qt for example implementations (in the {plugins/src/sqldrivers} subdirectory of the source distribution). Read the plugins documentation for more information on plugins.
QSqlDriverPlugin::QSqlDriverPlugin | ( | ) |
Constructs a SQL driver plugin. This is invoked automatically by the Q_EXPORT_PLUGIN
macro.
QSqlDriverPlugin::~QSqlDriverPlugin | ( | ) |
Destroys the SQL driver plugin.
You never have to call this explicitly. Qt destroys a plugin automatically when it is no longer used.
QSqlDriverPlugin::QSqlDriverPlugin | ( | ) |
QSqlDriverPlugin::~QSqlDriverPlugin | ( | ) |
QSqlDriver * QSqlDriverPlugin::create | ( | const QString & | key | ) | [pure virtual] |
Creates and returns a QSqlDriver object for the driver key key. The driver key is usually the class name of the required driver.
Implementado en QMYSQLDriverPlugin, QPSQLDriverPlugin, SqlitePlugin, QIBaseDriverPlugin, QMYSQLDriverPlugin, QODBCDriverPlugin, QPSQLDriverPlugin y QSQLiteDriverPlugin.
virtual QSqlDriver* QSqlDriverPlugin::create | ( | const QString & | key | ) | [pure virtual] |
virtual QStringList QSqlDriverPlugin::keys | ( | ) | const [pure virtual] |
QStringList QSqlDriverPlugin::keys | ( | ) | const [pure virtual] |
Returns the list of drivers (keys) this plugin supports.
These keys are usually the class names of the custom drivers that are implemented in the plugin.
Implementado en QMYSQLDriverPlugin, QPSQLDriverPlugin, SqlitePlugin, QIBaseDriverPlugin, QMYSQLDriverPlugin, QODBCDriverPlugin, QPSQLDriverPlugin y QSQLiteDriverPlugin.