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117 lines
4.0 KiB
Plaintext
117 lines
4.0 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsprovidermetadata.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsProviderMetadata
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{
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%Docstring
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Holds data provider key, description, and associated shared library file or function pointer information.
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Provider metadata refers either to providers which are loaded via libraries or
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which are native providers that are included in the core QGIS installation
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and accessed through function pointers.
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For library based providers, the metadata class is used in a lazy load
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implementation in QgsProviderRegistry. To save memory, data providers
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are only actually loaded via QLibrary calls if they're to be used. (Though they're all
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iteratively loaded once to get their metadata information, and then
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unloaded when the QgsProviderRegistry is created.) QgsProviderMetadata
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supplies enough information to be able to later load the associated shared
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library object.
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%End
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%TypeHeaderCode
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#include "qgsprovidermetadata.h"
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%End
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public:
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QgsProviderMetadata( const QString &_key, const QString &_description, const QString &_library );
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QgsProviderMetadata( const QString &key, const QString &description, SIP_PYCALLABLE / AllowNone / );
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%Docstring
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Metadata for provider with direct provider creation function pointer, where
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no library is involved.
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.. versionadded:: 3.0
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%End
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%MethodCode
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// Make sure the callable doesn't get garbage collected, this is needed because refcount for a2 is 0
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// and the creation function pointer is passed to the metadata and it needs to be kept in memory.
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Py_INCREF( a2 );
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Py_BEGIN_ALLOW_THREADS
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sipCpp = new QgsProviderMetadata( *a0, *a1, [a2]( const QString &dataSource, const QgsDataProvider::ProviderOptions &providerOptions ) -> QgsDataProvider*
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{
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QgsDataProvider *provider;
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provider = nullptr;
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PyObject *sipResObj;
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SIP_BLOCK_THREADS
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sipResObj = sipCallMethod( nullptr, a2, "DD", new QString( dataSource ), sipType_QString, nullptr, new QgsDataProvider::ProviderOptions( providerOptions ), sipType_QgsDataProvider_ProviderOptions, NULL );
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if ( sipResObj )
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{
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if ( sipCanConvertToType( sipResObj, sipType_QgsDataProvider, SIP_NOT_NONE ) )
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{
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int state0;
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int sipIsErr = 0;
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provider = reinterpret_cast<QgsDataProvider *>( sipConvertToType( sipResObj, sipType_QgsDataProvider, nullptr, SIP_NOT_NONE, &state0, &sipIsErr ) );
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if ( sipIsErr != 0 )
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{
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sipReleaseType( provider, sipType_QgsDataProvider, state0 );
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provider = nullptr;
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}
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}
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}
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SIP_UNBLOCK_THREADS
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return provider;
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} );
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Py_END_ALLOW_THREADS
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%End
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QString key() const;
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%Docstring
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This returns the unique key associated with the provider
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This key string is used for the associative container in :py:class:`QgsProviderRegistry`
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%End
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QString description() const;
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%Docstring
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This returns descriptive text for the provider
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This is used to provide a descriptive list of available data providers.
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%End
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QString library() const;
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%Docstring
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This returns the library file name
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This is used to QLibrary calls to load the data provider.
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsprovidermetadata.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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