QgsProviderMetadata Class Reference

Holds data provider key, description, and associated shared library file information. More...

#include <qgsprovidermetadata.h>

Public Member Functions
	QgsProviderMetadata (const QString &_key, const QString &_description, const QString &_library)
const QString &	key () const
	this returns the unique key associated with the provider
const QString &	description () const
	this returns descriptive text for the provider
const QString &	library () const
	this returns the library file name

Private Attributes
QString	key_
	unique key for data provider
QString	description_
	associated terse description
QString	library_
	file path

Detailed Description

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.

Definition at line 37 of file qgsprovidermetadata.h.

Constructor & Destructor Documentation

QgsProviderMetadata::QgsProviderMetadata	(	const QString &	_key,
		const QString &	_description,
		const QString &	_library
	)

Definition at line 23 of file qgsprovidermetadata.cpp.

Member Function Documentation

QString const & QgsProviderMetadata::description

(

)

const

this returns descriptive text for the provider

This is used to provide a descriptive list of available data providers.

Definition at line 36 of file qgsprovidermetadata.cpp.

References description_.

QString const & QgsProviderMetadata::key

(

)

const

this returns the unique key associated with the provider

This key string is used for the associative container in QgsProviderRegistry

Definition at line 31 of file qgsprovidermetadata.cpp.

References key_.

QString const & QgsProviderMetadata::library

(

)

const

this returns the library file name

This is used to QLibrary calls to load the data provider.

Definition at line 41 of file qgsprovidermetadata.cpp.

References library_.

Referenced by QgsProviderRegistry::library().

Member Data Documentation

QString QgsProviderMetadata::description_

private

associated terse description

Definition at line 67 of file qgsprovidermetadata.h.

Referenced by description().

QString QgsProviderMetadata::key_

private

unique key for data provider

Definition at line 64 of file qgsprovidermetadata.h.

Referenced by key().

QString QgsProviderMetadata::library_

private

file path

Definition at line 70 of file qgsprovidermetadata.h.

Referenced by library().

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The documentation for this class was generated from the following files:

• /tmp/buildd/qgis-2.2.0+wheezy1/src/core/qgsprovidermetadata.h
• /tmp/buildd/qgis-2.2.0+wheezy1/src/core/qgsprovidermetadata.cpp