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src
core
qgsfeatureexpressionfilterprovider.h
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/***************************************************************************
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qgsfeatureexpressionfilterprovider.h
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------------------
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begin : 2025-07-26
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copyright : (C) 2025 by Mathieu Pellerin
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email : mathieu at opengis dot ch
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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 QGSFEATUREEXPRESSIONFILTERPROVIDER_H
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#define QGSFEATUREEXPRESSIONFILTERPROVIDER_H
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#include "qgis_core.h"
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#include "
qgsfeaturefilterprovider.h
"
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#include <QMap>
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class
QgsExpression
;
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class
CORE_EXPORT
QgsFeatureExpressionFilterProvider
:
public
QgsFeatureFilterProvider
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{
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public
:
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QgsFeatureExpressionFilterProvider
() =
default
;
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Q_DECL_DEPRECATED
void
filterFeatures
(
const
QgsVectorLayer
*layer,
QgsFeatureRequest
&
filterFeatures
)
const
override
SIP_DEPRECATED
;
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void
filterFeatures
(
const
QString &layerId,
QgsFeatureRequest
&
filterFeatures
)
const override
;
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QStringList
layerAttributes
(
const
QgsVectorLayer
*layer,
const
QStringList &attributes )
const override
;
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QgsFeatureExpressionFilterProvider
*
clone
() const override
SIP_FACTORY
;
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void
setFilter
( const QString &layerId, const
QgsExpression
&expression );
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private:
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QMap<QString, QString> mFilters;
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};
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#endif
QgsExpression
Handles parsing and evaluation of expressions (formerly called "search strings").
Definition
qgsexpression.h:197
QgsFeatureExpressionFilterProvider::QgsFeatureExpressionFilterProvider
QgsFeatureExpressionFilterProvider()=default
Constructor.
QgsFeatureExpressionFilterProvider::setFilter
void setFilter(const QString &layerId, const QgsExpression &expression)
Set a filter for the given layer.
Definition
qgsfeatureexpressionfilterprovider.cpp:51
QgsFeatureExpressionFilterProvider::filterFeatures
Q_DECL_DEPRECATED void filterFeatures(const QgsVectorLayer *layer, QgsFeatureRequest &filterFeatures) const override
Add additional filters to the feature request to further restrict the features returned by the reques...
Definition
qgsfeatureexpressionfilterprovider.cpp:24
QgsFeatureFilterProvider::layerAttributes
virtual QStringList layerAttributes(const QgsVectorLayer *layer, const QStringList &attributes) const =0
Returns the list of visible attribute names from a list of attributes names for the given layer.
QgsFeatureFilterProvider::filterFeatures
virtual Q_DECL_DEPRECATED void filterFeatures(const QgsVectorLayer *layer, QgsFeatureRequest &featureRequest) const
Add additional filters to the feature request to further restrict the features returned by the reques...
Definition
qgsfeaturefilterprovider.h:67
QgsFeatureFilterProvider::QgsFeatureFilterProvider
QgsFeatureFilterProvider()=default
QgsFeatureFilterProvider::clone
virtual QgsFeatureFilterProvider * clone() const =0
Create a clone of the feature filter provider.
QgsFeatureRequest
Wraps a request for features to a vector layer (or directly its vector data provider).
Definition
qgsfeaturerequest.h:85
QgsVectorLayer
Represents a vector layer which manages a vector based dataset.
Definition
qgsvectorlayer.h:414
SIP_DEPRECATED
#define SIP_DEPRECATED
Definition
qgis_sip.h:113
SIP_FACTORY
#define SIP_FACTORY
Definition
qgis_sip.h:83
qgsfeaturefilterprovider.h
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