The QgsOgcUtils class provides various utility functions for conversion between OGC (Open Geospatial Consortium) standards and QGIS internal representations. More...

#include <qgsogcutils.h>

Public Types
enum	FilterVersion { FILTER_OGC_1_0, FILTER_OGC_1_1, FILTER_FES_2_0 }
	OGC filter version. More...

enum	GMLVersion { GML_2_1_2, GML_3_1_0, GML_3_2_1 }
	GML version. More...

Static Public Member Functions
static QColor	colorFromOgcFill (const QDomElement &fillElement)
	Parse XML with OGC fill into QColor. More...

static QgsExpression *	expressionFromOgcFilter (const QDomElement &element)
	Parse XML with OGC filter into QGIS expression. More...

static QDomElement	expressionToOgcExpression (const QgsExpression &exp, QDomDocument &doc, QString *errorMessage=nullptr)
	Creates an OGC expression XML element. More...

static QDomElement	expressionToOgcExpression (const QgsExpression &exp, QDomDocument &doc, GMLVersion gmlVersion, FilterVersion filterVersion, const QString &geometryName, const QString &srsName, bool honourAxisOrientation, bool invertAxisOrientation, QString *errorMessage=nullptr)
	Creates an OGC expression XML element. More...

static QDomElement	expressionToOgcFilter (const QgsExpression &exp, QDomDocument &doc, QString *errorMessage=nullptr)
	Creates OGC filter XML element. More...

static QDomElement	expressionToOgcFilter (const QgsExpression &exp, QDomDocument &doc, GMLVersion gmlVersion, FilterVersion filterVersion, const QString &geometryName, const QString &srsName, bool honourAxisOrientation, bool invertAxisOrientation, QString *errorMessage=nullptr)
	Creates OGC filter XML element. More...

static QgsGeometry *	geometryFromGML (const QString &xmlString)
	Static method that creates geometry from GML. More...

static QgsGeometry *	geometryFromGML (const QDomNode &geometryNode)
	Static method that creates geometry from GML. More...

static QDomElement	geometryToGML (const QgsGeometry *geometry, QDomDocument &doc, GMLVersion gmlVersion, const QString &srsName, bool invertAxisOrientation, const QString &gmlIdBase, int precision=17)
	Exports the geometry to GML. More...

static QDomElement	geometryToGML (const QgsGeometry *geometry, QDomDocument &doc, const QString &format, int precision=17)
	Exports the geometry to GML2 or GML3. More...

static QDomElement	geometryToGML (const QgsGeometry *geometry, QDomDocument &doc, int precision=17)
	Exports the geometry to GML2. More...

static QgsRectangle	rectangleFromGMLBox (const QDomNode &boxNode)
	Read rectangle from GML2 Box. More...

static QgsRectangle	rectangleFromGMLEnvelope (const QDomNode &envelopeNode)
	Read rectangle from GML3 Envelope. More...

static QDomElement	rectangleToGMLBox (QgsRectangle *box, QDomDocument &doc, int precision=17)
	Exports the rectangle to GML2 Box. More...

static QDomElement	rectangleToGMLBox (QgsRectangle *box, QDomDocument &doc, const QString &srsName, bool invertAxisOrientation, int precision=17)
	Exports the rectangle to GML2 Box. More...

static QDomElement	rectangleToGMLEnvelope (QgsRectangle *env, QDomDocument &doc, int precision=17)
	Exports the rectangle to GML3 Envelope. More...

static QDomElement	rectangleToGMLEnvelope (QgsRectangle *env, QDomDocument &doc, const QString &srsName, bool invertAxisOrientation, int precision=17)
	Exports the rectangle to GML3 Envelope. More...

Detailed Description

The QgsOgcUtils class provides various utility functions for conversion between OGC (Open Geospatial Consortium) standards and QGIS internal representations.

Currently supported standards:

GML2 - Geography Markup Language (import, export)

Definition at line 42 of file qgsogcutils.h.

Member Enumeration Documentation

◆ FilterVersion

enum QgsOgcUtils::FilterVersion

OGC filter version.

Note: not available in Python bindings

Enumerator
FILTER_OGC_1_0
FILTER_OGC_1_1
FILTER_FES_2_0

Definition at line 139 of file qgsogcutils.h.

◆ GMLVersion

enum QgsOgcUtils::GMLVersion

GML version.

Note: not available in Python bindings

Enumerator
GML_2_1_2
GML_3_1_0
GML_3_2_1

Definition at line 49 of file qgsogcutils.h.

Member Function Documentation

◆ colorFromOgcFill()

QColor QgsOgcUtils::colorFromOgcFill ( const QDomElement & fillElement )

static

Parse XML with OGC fill into QColor.

Definition at line 1543 of file qgsogcutils.cpp.

◆ expressionFromOgcFilter()

QgsExpression * QgsOgcUtils::expressionFromOgcFilter ( const QDomElement & element )

static

Parse XML with OGC filter into QGIS expression.

Definition at line 1582 of file qgsogcutils.cpp.

◆ expressionToOgcExpression() [1/2]

QDomElement QgsOgcUtils::expressionToOgcExpression	(	const QgsExpression &	exp,
		QDomDocument &	doc,
		QString *	errorMessage = `nullptr`
	)

static

Creates an OGC expression XML element.

Returns: valid OGC expression QDomElement on success, otherwise null QDomElement

Note: added in 2.14.8

Definition at line 2100 of file qgsogcutils.cpp.

◆ expressionToOgcExpression() [2/2]

QDomElement QgsOgcUtils::expressionToOgcExpression	(	const QgsExpression &	exp,
		QDomDocument &	doc,
		GMLVersion	gmlVersion,
		FilterVersion	filterVersion,
		const QString &	geometryName,
		const QString &	srsName,
		bool	honourAxisOrientation,
		bool	invertAxisOrientation,
		QString *	errorMessage = `nullptr`
	)

static

Creates an OGC expression XML element.

Returns: valid OGC expression QDomElement on success, otherwise null QDomElement

Definition at line 2143 of file qgsogcutils.cpp.

◆ expressionToOgcFilter() [1/2]

QDomElement QgsOgcUtils::expressionToOgcFilter	(	const QgsExpression &	exp,
		QDomDocument &	doc,
		QString *	errorMessage = `nullptr`
	)

static

Creates OGC filter XML element.

Supports minimum standard filter according to the OGC filter specs (=,!=,<,>,<=,>=,AND,OR,NOT)

Returns

valid

<Filter>

QDomElement on success, otherwise null QDomElement

Definition at line 2094 of file qgsogcutils.cpp.

◆ expressionToOgcFilter() [2/2]

QDomElement QgsOgcUtils::expressionToOgcFilter	(	const QgsExpression &	exp,
		QDomDocument &	doc,
		GMLVersion	gmlVersion,
		FilterVersion	filterVersion,
		const QString &	geometryName,
		const QString &	srsName,
		bool	honourAxisOrientation,
		bool	invertAxisOrientation,
		QString *	errorMessage = `nullptr`
	)

static

Creates OGC filter XML element.

Supports minimum standard filter according to the OGC filter specs (=,!=,<,>,<=,>=,AND,OR,NOT)

Returns

valid

<Filter>

QDomElement on success, otherwise null QDomElement

Note: Added in QGIS 2.14

Definition at line 2106 of file qgsogcutils.cpp.

◆ geometryFromGML() [1/2]

QgsGeometry * QgsOgcUtils::geometryFromGML ( const QString & xmlString )

static

Static method that creates geometry from GML.

Parameters

xmlString

xml representation of the geometry. GML elements are expected to be in default namespace (

{<Point>...</Point>

) or in "gml" namespace (

<gml:Point>...</gml:Point>

)

Definition at line 129 of file qgsogcutils.cpp.

◆ geometryFromGML() [2/2]

QgsGeometry * QgsOgcUtils::geometryFromGML ( const QDomNode & geometryNode )

static

Static method that creates geometry from GML.

Definition at line 68 of file qgsogcutils.cpp.

◆ geometryToGML() [1/3]

QDomElement QgsOgcUtils::geometryToGML	(	const QgsGeometry *	geometry,
		QDomDocument &	doc,
		GMLVersion	gmlVersion,
		const QString &	srsName,
		bool	invertAxisOrientation,
		const QString &	gmlIdBase,
		int	precision = `17`
	)

static

Exports the geometry to GML.

Returns: QDomElement

Note: Added in QGIS 2.14

Definition at line 1130 of file qgsogcutils.cpp.

◆ geometryToGML() [2/3]

QDomElement QgsOgcUtils::geometryToGML	(	const QgsGeometry *	geometry,
		QDomDocument &	doc,
		const QString &	format,
		int	precision = `17`
	)

static

Exports the geometry to GML2 or GML3.

Returns: QDomElement

Definition at line 1125 of file qgsogcutils.cpp.

◆ geometryToGML() [3/3]

QDomElement QgsOgcUtils::geometryToGML	(	const QgsGeometry *	geometry,
		QDomDocument &	doc,
		int	precision = `17`
	)

static

Exports the geometry to GML2.

Returns: QDomElement

Definition at line 1485 of file qgsogcutils.cpp.

◆ rectangleFromGMLBox()

QgsRectangle QgsOgcUtils::rectangleFromGMLBox ( const QDomNode & boxNode )

static

Read rectangle from GML2 Box.

Definition at line 878 of file qgsogcutils.cpp.

◆ rectangleFromGMLEnvelope()

QgsRectangle QgsOgcUtils::rectangleFromGMLEnvelope ( const QDomNode & envelopeNode )

static

Read rectangle from GML3 Envelope.

Definition at line 965 of file qgsogcutils.cpp.

◆ rectangleToGMLBox() [1/2]

QDomElement QgsOgcUtils::rectangleToGMLBox	(	QgsRectangle *	box,
		QDomDocument &	doc,
		int	precision = `17`
	)

static

Exports the rectangle to GML2 Box.

Returns: QDomElement

Definition at line 1044 of file qgsogcutils.cpp.

◆ rectangleToGMLBox() [2/2]

QDomElement QgsOgcUtils::rectangleToGMLBox	(	QgsRectangle *	box,
		QDomDocument &	doc,
		const QString &	srsName,
		bool	invertAxisOrientation,
		int	precision = `17`
	)

static

Exports the rectangle to GML2 Box.

Returns: QDomElement

Note: Added in QGIS 2.14

Definition at line 1049 of file qgsogcutils.cpp.

◆ rectangleToGMLEnvelope() [1/2]

QDomElement QgsOgcUtils::rectangleToGMLEnvelope	(	QgsRectangle *	env,
		QDomDocument &	doc,
		int	precision = `17`
	)

static

Exports the rectangle to GML3 Envelope.

Returns: QDomElement

Definition at line 1084 of file qgsogcutils.cpp.

◆ rectangleToGMLEnvelope() [2/2]

QDomElement QgsOgcUtils::rectangleToGMLEnvelope	(	QgsRectangle *	env,
		QDomDocument &	doc,
		const QString &	srsName,
		bool	invertAxisOrientation,
		int	precision = `17`
	)

static

Exports the rectangle to GML3 Envelope.

Returns: QDomElement

Note: Added in QGIS 2.14

Definition at line 1089 of file qgsogcutils.cpp.

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

/build/qgis-2.14.11+dfsg/src/core/qgsogcutils.h
/build/qgis-2.14.11+dfsg/src/core/qgsogcutils.cpp

Public Types

Static Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ FilterVersion

◆ GMLVersion

Member Function Documentation

◆ colorFromOgcFill()

◆ expressionFromOgcFilter()

◆ expressionToOgcExpression() [1/2]

◆ expressionToOgcExpression() [2/2]

◆ expressionToOgcFilter() [1/2]

◆ expressionToOgcFilter() [2/2]

◆ geometryFromGML() [1/2]

◆ geometryFromGML() [2/2]

◆ geometryToGML() [1/3]

◆ geometryToGML() [2/3]

◆ geometryToGML() [3/3]

◆ rectangleFromGMLBox()

◆ rectangleFromGMLEnvelope()

◆ rectangleToGMLBox() [1/2]

◆ rectangleToGMLBox() [2/2]

◆ rectangleToGMLEnvelope() [1/2]

◆ rectangleToGMLEnvelope() [2/2]