QGIS API Documentation
3.26.3-Buenos Aires (65e4edfdad)
src
core
providers
qgsprovidersublayertask.h
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/***************************************************************************
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qgsprovidersublayertask.h
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----------------------
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begin : June 2021
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copyright : (C) 2021 by Nyall Dawson
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email : nyall dot dawson at gmail dot com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSPROVIDERSUBLAYERTASKTASK_H
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#define QGSPROVIDERSUBLAYERTASKTASK_H
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#include "
qgstaskmanager.h
"
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#include <QReadWriteLock>
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#include <memory>
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class
QgsFeedback
;
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class
QgsProviderSublayerDetails
;
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class
CORE_EXPORT
QgsProviderSublayerTask
:
public
QgsTask
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{
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Q_OBJECT
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public
:
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QgsProviderSublayerTask
(
const
QString &uri,
bool
includeSystemTables =
false
);
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~
QgsProviderSublayerTask
()
override
;
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QList<QgsProviderSublayerDetails> results()
const
;
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void
cancel
()
override
;
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protected
:
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bool
run
()
override
;
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private
:
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QString mUri;
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bool
mIncludeSystemTables =
false
;
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std::unique_ptr< QgsFeedback > mFeedback;
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QList<QgsProviderSublayerDetails> mResults;
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mutable
QReadWriteLock mLock;
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};
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#endif // QGSPROVIDERSUBLAYERTASKTASK_H
qgstaskmanager.h
QgsTask::cancel
virtual void cancel()
Notifies the task that it should terminate.
Definition:
qgstaskmanager.cpp:91
QgsProviderSublayerTask
A QgsTask which retrieves sublayer details for a URI.
Definition:
qgsprovidersublayertask.h:46
QgsFeedback
Base class for feedback objects to be used for cancellation of something running in a worker thread.
Definition:
qgsfeedback.h:44
QgsProviderSublayerDetails
Contains details about a sub layer available from a dataset.
Definition:
qgsprovidersublayerdetails.h:44
QgsTask::run
virtual bool run()=0
Performs the task's operation.
QgsTask
Abstract base class for long running background tasks. Tasks can be controlled directly,...
Definition:
qgstaskmanager.h:54
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