This class builds features from GML data in a streaming way. More...

#include <qgsgml.h>

Classes
class	LayerProperties
	Layer properties. More...

Public Types
enum	AxisOrientationLogic { Honour_EPSG_if_urn , Honour_EPSG , Ignore_EPSG }
	Axis orientation logic. More...

typedef QPair< QgsFeature *, QString >	QgsGmlFeaturePtrGmlIdPair

Public Member Functions
	QgsGmlStreamingParser (const QgsGmlStreamingParser &other)=delete
	QgsGmlStreamingParser cannot be copied.

	QgsGmlStreamingParser (const QList< LayerProperties > &layerProperties, const QgsFields &fields, const QMap< QString, QPair< QString, QString > > &mapFieldNameToSrcLayerNameFieldName, AxisOrientationLogic axisOrientationLogic=Honour_EPSG_if_urn, bool invertAxisOrientation=false)
	Constructor for a join layer, or dealing with renamed fields.

	QgsGmlStreamingParser (const QString &typeName, const QString &geometryAttribute, const QgsFields &fields, AxisOrientationLogic axisOrientationLogic=Honour_EPSG_if_urn, bool invertAxisOrientation=false)
	Constructor.

	~QgsGmlStreamingParser ()

QString	exceptionText () const
	Returns the exception text.

QVector< QgsGmlFeaturePtrGmlIdPair >	getAndStealReadyFeatures ()
	Returns the list of features that have been completely parsed.

int	getEPSGCode () const
	Returns the EPSG code, or 0 if unknown.

bool	isException () const
	Returns whether the document parser is a OGC exception.

bool	isTruncatedResponse () const
	Returns whether a "truncatedResponse" element is found.

const QgsRectangle &	layerExtent () const
	Returns layer bounding box.

int	numberMatched () const
	Returns WFS 2.0 "numberMatched" attribute, or -1 if invalid/not found.

int	numberReturned () const
	Returns WFS 2.0 "numberReturned" or WFS 1.1 "numberOfFeatures" attribute, or -1 if invalid/not found.

QgsGmlStreamingParser &	operator= (const QgsGmlStreamingParser &other)=delete
	QgsGmlStreamingParser cannot be copied.

bool	processData (const QByteArray &data, bool atEnd)
	Process a new chunk of data.

bool	processData (const QByteArray &data, bool atEnd, QString &errorMsg)
	Process a new chunk of data.

QString	srsName () const
	Returns the value of the srsName attribute.

Qgis::WkbType	wkbType () const
	Returns the geometry type.

Detailed Description

This class builds features from GML data in a streaming way.

The caller must call processData() as soon it has new content from the source. At any point, it can call getAndStealReadyFeatures() to collect the features that have been completely parsed.

Note: not available in Python bindings

Since: QGIS 2.16

Definition at line 51 of file qgsgml.h.

Member Typedef Documentation

◆ QgsGmlFeaturePtrGmlIdPair

typedef QPair<QgsFeature *, QString> QgsGmlStreamingParser::QgsGmlFeaturePtrGmlIdPair

Definition at line 55 of file qgsgml.h.

Member Enumeration Documentation

◆ AxisOrientationLogic

enum QgsGmlStreamingParser::AxisOrientationLogic

Axis orientation logic.

Enumerator
Honour_EPSG_if_urn	Honour EPSG axis order only if srsName is of the form urn:ogc:def:crs:EPSG:
Honour_EPSG	Honour EPSG axis order.
Ignore_EPSG	Ignore EPSG axis order.

Definition at line 74 of file qgsgml.h.

Constructor & Destructor Documentation

◆ QgsGmlStreamingParser() [1/3]

QgsGmlStreamingParser::QgsGmlStreamingParser	(	const QString &	typeName,
		const QString &	geometryAttribute,
		const QgsFields &	fields,
		AxisOrientationLogic	axisOrientationLogic = `Honour_EPSG_if_urn`,
		bool	invertAxisOrientation = `false`
	)

Constructor.

Definition at line 278 of file qgsgml.cpp.

◆ QgsGmlStreamingParser() [2/3]

QgsGmlStreamingParser::QgsGmlStreamingParser	(	const QList< LayerProperties > &	layerProperties,
		const QgsFields &	fields,
		const QMap< QString, QPair< QString, QString > > &	mapFieldNameToSrcLayerNameFieldName,
		AxisOrientationLogic	axisOrientationLogic = `Honour_EPSG_if_urn`,
		bool	invertAxisOrientation = `false`
	)

Constructor for a join layer, or dealing with renamed fields.

Definition at line 340 of file qgsgml.cpp.

◆ ~QgsGmlStreamingParser()

QgsGmlStreamingParser::~QgsGmlStreamingParser ( )

Definition at line 419 of file qgsgml.cpp.

◆ QgsGmlStreamingParser() [3/3]

QgsGmlStreamingParser::QgsGmlStreamingParser ( const QgsGmlStreamingParser & other )

delete

QgsGmlStreamingParser cannot be copied.

Member Function Documentation

◆ exceptionText()

QString QgsGmlStreamingParser::exceptionText ( ) const

inline

Returns the exception text.

Definition at line 146 of file qgsgml.h.

◆ getAndStealReadyFeatures()

QVector< QgsGmlStreamingParser::QgsGmlFeaturePtrGmlIdPair > QgsGmlStreamingParser::getAndStealReadyFeatures ( )

Returns the list of features that have been completely parsed.

This can be called at any point. This will empty the list maintained internally by the parser, so that features already returned will no longer be returned by later calls.

Definition at line 489 of file qgsgml.cpp.

◆ getEPSGCode()

int QgsGmlStreamingParser::getEPSGCode ( ) const

inline

Returns the EPSG code, or 0 if unknown.

Definition at line 125 of file qgsgml.h.

◆ isException()

bool QgsGmlStreamingParser::isException ( ) const

inline

Returns whether the document parser is a OGC exception.

Definition at line 143 of file qgsgml.h.

◆ isTruncatedResponse()

bool QgsGmlStreamingParser::isTruncatedResponse ( ) const

inline

Returns whether a "truncatedResponse" element is found.

Definition at line 149 of file qgsgml.h.

◆ layerExtent()

const QgsRectangle & QgsGmlStreamingParser::layerExtent ( ) const

inline

Returns layer bounding box.

Definition at line 131 of file qgsgml.h.

◆ numberMatched()

int QgsGmlStreamingParser::numberMatched ( ) const

inline

Returns WFS 2.0 "numberMatched" attribute, or -1 if invalid/not found.

Definition at line 137 of file qgsgml.h.

◆ numberReturned()

int QgsGmlStreamingParser::numberReturned ( ) const

inline

Returns WFS 2.0 "numberReturned" or WFS 1.1 "numberOfFeatures" attribute, or -1 if invalid/not found.

Definition at line 140 of file qgsgml.h.

◆ operator=()

QgsGmlStreamingParser & QgsGmlStreamingParser::operator= ( const QgsGmlStreamingParser & other )

delete

QgsGmlStreamingParser cannot be copied.

◆ processData() [1/2]

bool QgsGmlStreamingParser::processData	(	const QByteArray &	data,
		bool	atEnd
	)

Process a new chunk of data.

atEnd must be set to true when this is the last chunk of data.

Definition at line 433 of file qgsgml.cpp.

◆ processData() [2/2]

bool QgsGmlStreamingParser::processData	(	const QByteArray &	data,
		bool	atEnd,
		QString &	errorMsg
	)

Process a new chunk of data.

atEnd must be set to true when this is the last chunk of data.

Definition at line 444 of file qgsgml.cpp.

◆ srsName()

QString QgsGmlStreamingParser::srsName ( ) const

inline

Returns the value of the srsName attribute.

Definition at line 128 of file qgsgml.h.

◆ wkbType()

Qgis::WkbType QgsGmlStreamingParser::wkbType ( ) const

inline

Returns the geometry type.

Definition at line 134 of file qgsgml.h.

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

/build/qgis-3.34.0+99sid/src/core/qgsgml.h
/build/qgis-3.34.0+99sid/src/core/qgsgml.cpp

Classes

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ QgsGmlFeaturePtrGmlIdPair

Member Enumeration Documentation

◆ AxisOrientationLogic

Constructor & Destructor Documentation

◆ QgsGmlStreamingParser() [1/3]

◆ QgsGmlStreamingParser() [2/3]

◆ ~QgsGmlStreamingParser()

◆ QgsGmlStreamingParser() [3/3]

Member Function Documentation

◆ exceptionText()

◆ getAndStealReadyFeatures()

◆ getEPSGCode()

◆ isException()

◆ isTruncatedResponse()

◆ layerExtent()

◆ numberMatched()

◆ numberReturned()

◆ operator=()

◆ processData() [1/2]

◆ processData() [2/2]

◆ srsName()

◆ wkbType()