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qgsvectorlayerutils.h
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qgsvectorlayerutils.h
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/***************************************************************************
qgsvectorlayerutils.h
---------------------
Date : October 2016
Copyright : (C) 2016 by Nyall Dawson
Email : nyall dot dawson at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSVECTORLAYERUTILS_H
#define QGSVECTORLAYERUTILS_H
#include "qgsvectorlayer.h"
/** \ingroup core
* \class QgsVectorLayerUtils
* \brief Contains utility methods for working with QgsVectorLayers.
*
* \note Added in version 3.0
*/
class CORE_EXPORT QgsVectorLayerUtils
{
public:
/**
* Returns true if the specified value already exists within a field. This method can be used to test for uniqueness
* of values inside a layer's attributes. An optional list of ignored feature IDs can be provided, if so, any features
* with IDs within this list are ignored when testing for existance of the value.
*/
static bool valueExists( const QgsVectorLayer* layer, int fieldIndex, const QVariant& value, const QgsFeatureIds& ignoreIds = QgsFeatureIds() );
};
#endif // QGSVECTORLAYERUTILS_H