Base class for geometry checks for a single geometry without any context of the layer or other layers in the project. More...

#include <qgssinglegeometrycheck.h>

Inheritance diagram for QgsSingleGeometryCheck:

[legend]

Public Member Functions
	QgsSingleGeometryCheck (const QgsGeometryCheckContext *context, const QVariantMap &configuration)
	Creates a new single geometry check.

void	collectErrors (const QMap< QString, QgsFeaturePool * > &featurePools, QList< QgsGeometryCheckError * > &errors, QStringList &messages, QgsFeedback *feedback=nullptr, const QgsGeometryCheck::LayerFeatureIds &ids=QgsGeometryCheck::LayerFeatureIds()) const FINAL
	The main worker method.

virtual QList< QgsSingleGeometryCheckError * >	processGeometry (const QgsGeometry &geometry) const =0
	Check the geometry for errors.

Public Member Functions inherited from QgsGeometryCheck
	QgsGeometryCheck (const QgsGeometryCheckContext *context, const QVariantMap &configuration)
	Create a new geometry check.

virtual	~QgsGeometryCheck ()=default

virtual QList< QgsGeometryCheckResolutionMethod >	availableResolutionMethods () const
	Returns a list of available resolution methods.

virtual CheckType	checkType () const =0
	Returns the check type.

virtual QList< Qgis::GeometryType >	compatibleGeometryTypes () const =0
	A list of geometry types for which this check can be performed.

template<class T >
T	configurationValue (const QString &name, const QVariant &defaultValue=QVariant())
	Returns the configuration value with the name, saved in the QGIS settings for this geometry check.

const QgsGeometryCheckContext *	context () const
	Returns the context.

virtual QString	description () const =0
	Returns a human readable description for this check.

virtual void	fixError (const QMap< QString, QgsFeaturePool * > &featurePools, QgsGeometryCheckError *error, int method, const QMap< QString, int > &mergeAttributeIndices, Changes &changes) const
	Fixes the error error with the specified method.

virtual QgsGeometryCheck::Flags	flags () const
	Flags for this geometry check.

virtual QString	id () const =0
	Returns an id for this check.

virtual bool	isCompatible (QgsVectorLayer *layer) const
	Returns if this geometry check is compatible with layer.

virtual void	prepare (const QgsGeometryCheckContext *context, const QVariantMap &configuration)
	Will be run in the main thread before collectErrors() is called (which may be run from a background thread).

virtual Q_DECL_DEPRECATED QStringList	resolutionMethods () const
	Returns a list of descriptions for available resolutions for errors.

Additional Inherited Members
Public Types inherited from QgsGeometryCheck
typedef QMap< QString, QMap< QgsFeatureId, QList< QgsGeometryCheck::Change > > >	Changes
	A collection of changes.

enum	ChangeType { ChangeAdded , ChangeRemoved , ChangeChanged }
	Description of the type of a change. More...

enum	ChangeWhat { ChangeFeature , ChangePart , ChangeRing , ChangeNode }
	Description of a change to indicate at which level a change occurred. More...

enum	CheckType { FeatureNodeCheck , FeatureCheck , LayerCheck }
	The type of a check. More...

enum	Flag { AvailableInValidation = 1 << 1 }
	Flags for geometry checks. More...

typedef QFlags< Flag >	Flags

Protected Member Functions inherited from QgsGeometryCheck
QMap< QString, QgsFeatureIds >	allLayerFeatureIds (const QMap< QString, QgsFeaturePool * > &featurePools) const
	Returns all layers and feature ids.

void	deleteFeatureGeometryPart (const QMap< QString, QgsFeaturePool * > &featurePools, const QString &layerId, QgsFeature &feature, int partIdx, Changes &changes) const
	Deletes a part of a feature geometry.

void	deleteFeatureGeometryRing (const QMap< QString, QgsFeaturePool * > &featurePools, const QString &layerId, QgsFeature &feature, int partIdx, int ringIdx, Changes &changes) const
	Deletes a ring in a feature geometry.

void	replaceFeatureGeometryPart (const QMap< QString, QgsFeaturePool * > &featurePools, const QString &layerId, QgsFeature &feature, int partIdx, QgsAbstractGeometry *newPartGeom, Changes &changes) const
	Replaces a part in a feature geometry.

double	scaleFactor (const QPointer< QgsVectorLayer > &layer) const
	Determines the scale factor of a layer to the map coordinate reference system.

Protected Attributes inherited from QgsGeometryCheck
QVariantMap	mConfiguration

const QgsGeometryCheckContext *	mContext

Detailed Description

Base class for geometry checks for a single geometry without any context of the layer or other layers in the project.

Classic examples are validity checks like self-intersection.

Subclasses need to implement the processGeometry method.

Since: QGIS 3.4

Definition at line 147 of file qgssinglegeometrycheck.h.

Constructor & Destructor Documentation

◆ QgsSingleGeometryCheck()

QgsSingleGeometryCheck::QgsSingleGeometryCheck	(	const QgsGeometryCheckContext *	context,
		const QVariantMap &	configuration
	)

inline

Creates a new single geometry check.

Definition at line 153 of file qgssinglegeometrycheck.h.

Member Function Documentation

◆ collectErrors()

void QgsSingleGeometryCheck::collectErrors	(	const QMap< QString, QgsFeaturePool * > &	featurePools,
		QList< QgsGeometryCheckError * > &	errors,
		QStringList &	messages,
		QgsFeedback *	feedback = `nullptr`,
		const QgsGeometryCheck::LayerFeatureIds &	ids = `QgsGeometryCheck::LayerFeatureIds()`
	)		const

virtual

The main worker method.

Check all features available from featurePools and write errors found to errors. Other status messages can be written to messages. Progress should be reported to feedback. Only features and layers listed in ids should be checked.

Since: QGIS 3.4

Implements QgsGeometryCheck.

Definition at line 21 of file qgssinglegeometrycheck.cpp.

◆ processGeometry()

virtual QList< QgsSingleGeometryCheckError * > QgsSingleGeometryCheck::processGeometry ( const QgsGeometry & geometry ) const

pure virtual

Check the geometry for errors.

It may make use of configuration options.

Returns a list of QgsSingleGeometryCheckErrors, ownership is transferred to the caller. An empty list is returned for geometries without errors.

Since: QGIS 3.4

Implemented in QgsGeometryIsValidCheck, QgsGeometryMultipartCheck, QgsGeometrySelfContactCheck, QgsGeometrySelfIntersectionCheck, and QgsGeometryTypeCheck.

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

/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/analysis/vector/geometry_checker/qgssinglegeometrycheck.h
/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/analysis/vector/geometry_checker/qgssinglegeometrycheck.cpp