mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-24 00:47:57 -05:00
45 lines
1.3 KiB
Plaintext
45 lines
1.3 KiB
Plaintext
|
|
||
|
|
/** holds data provider key, description, and associated shared library file information
|
||
|
|
|
||
|
|
The metadata class is used in a lazy load implementation in
|
||
|
|
QgsProviderRegistry. To save memory, data providers are only actually
|
||
|
|
loaded via QLibrary calls if they're to be used. (Though they're all
|
||
|
|
iteratively loaded once to get their metadata information, and then
|
||
|
|
unloaded when the QgsProviderRegistry is created.) QgsProviderMetadata
|
||
|
|
supplies enough information to be able to later load the associated shared
|
||
|
|
library object.
|
||
|
|
|
||
|
|
*/
|
||
|
|
class QgsProviderMetadata
|
||
|
|
{
|
||
|
|
%TypeHeaderCode
|
||
|
|
#include <qgsprovidermetadata.h>
|
||
|
|
%End
|
||
|
|
|
||
|
|
public:
|
||
|
|
|
||
|
|
QgsProviderMetadata(const QString & _key, const QString & _description, const QString & _library);
|
||
|
|
|
||
|
|
/** this returns the unique key associated with the provider
|
||
|
|
|
||
|
|
This key string is used for the associative container in QgsProviderRegistry
|
||
|
|
*/
|
||
|
|
const QString & key() const;
|
||
|
|
|
||
|
|
/** this returns descriptive text for the provider
|
||
|
|
|
||
|
|
This is used to provide a descriptive list of available data providers.
|
||
|
|
*/
|
||
|
|
const QString & description() const;
|
||
|
|
|
||
|
|
/** this returns the library file name
|
||
|
|
|
||
|
|
This is used to QLibrary calls to load the data provider.
|
||
|
|
*/
|
||
|
|
const QString & library() const;
|
||
|
|
|
||
|
|
|
||
|
|
}; // class QgsProviderMetadata
|
||
|
|
|
||
|
|
|