18#ifndef QGSFEATUREEXPRESSIONFILTERPROVIDER_H
19#define QGSFEATUREEXPRESSIONFILTERPROVIDER_H
50 void setFilter( const QString &layerId, const
QgsExpression &expression );
53 QMap<QString, QString> mFilters;
Handles parsing and evaluation of expressions (formerly called "search strings").
A feature filter provider allowing to set filter expressions on a per-layer basis.
QgsFeatureExpressionFilterProvider()=default
Constructor.
Abstract interface for use by classes that filter the features or attributes of a layer.
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.
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...
virtual QgsFeatureFilterProvider * clone() const =0
Create a clone of the feature filter provider.
Wraps a request for features to a vector layer (or directly its vector data provider).
Represents a vector layer which manages a vector based dataset.